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<div id=Content><div class="CClass"><div class=CTopic id=MainTopic><h1 class=CTitle><a name="OpenLayers.Layer.Vector"></a>OpenLayers.<wbr>Layer.<wbr>Vector</h1><div class=CBody><p>Instances of OpenLayers.Layer.Vector are used to render vector data from a variety of sources. Create a new vector layer with the <a href="#OpenLayers.Layer.Vector.OpenLayers.Layer.Vector" class=LConstructor id=link32 onMouseOver="ShowTip(event, 'tt31', 'link32')" onMouseOut="HideTip('tt31')">OpenLayers.Layer.Vector</a> constructor.</p><h4 class=CHeading>Inherits from</h4><ul><li><a href="../Layer-js.html#OpenLayers.Layer" class=LClass >OpenLayers.Layer</a></li></ul><!--START_ND_SUMMARY--><div class=Summary><div class=STitle>Summary</div><div class=SBorder><table border=0 cellspacing=0 cellpadding=0 class=STable><tr class="SMain"><td class=SEntry><a href="#OpenLayers.Layer.Vector" >OpenLayers.<wbr>Layer.<wbr>Vector</a></td><td class=SDescription>Instances of OpenLayers.Layer.Vector are used to render vector data from a variety of sources. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Layer.Vector.Properties" >Properties</a></td><td class=SDescription></td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.events" >events</a></td><td class=SDescription>{<a href="../Events-js.html#OpenLayers.Events" class=LClass >OpenLayers.Events</a>}</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.isBaseLayer" >isBaseLayer</a></td><td class=SDescription>{Boolean} The layer is a base layer. </td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.isFixed" >isFixed</a></td><td class=SDescription>{Boolean} Whether the layer remains in one place while dragging the map. </td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.features" >features</a></td><td class=SDescription>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link1 onMouseOver="ShowTip(event, 'tt1', 'link1')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)}</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.filter" >filter</a></td><td class=SDescription>{<a href="../Filter-js.html#OpenLayers.Filter" class=LClass id=link2 onMouseOver="ShowTip(event, 'tt2', 'link2')" onMouseOut="HideTip('tt2')">OpenLayers.Filter</a>} The filter set in this layer, a strategy launching read requests can combined this filter with its own filter.</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.selectedFeatures" >selectedFeatures</a></td><td class=SDescription>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link3 onMouseOver="ShowTip(event, 'tt1', 'link3')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)}</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.unrenderedFeatures" >unrenderedFeatures</a></td><td class=SDescription>{Object} hash of features, keyed by feature.id, that the renderer failed to draw</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.reportError" >reportError</a></td><td class=SDescription>{Boolean} report friendly error message when loading of renderer fails.</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.style" >style</a></td><td class=SDescription>{Object} Default style for the layer</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.styleMap" >styleMap</a></td><td class=SDescription>{<a href="../StyleMap-js.html#OpenLayers.StyleMap" class=LClass >OpenLayers.StyleMap</a>}</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.strategies" >strategies</a></td><td class=SDescription>{Array(<a href="../Strategy-js.html#OpenLayers.Strategy" class=LClass id=link4 onMouseOver="ShowTip(event, 'tt3', 'link4')" onMouseOut="HideTip('tt3')">OpenLayers.Strategy</a>})} Optional list of strategies for the layer.</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.protocol" >protocol</a></td><td class=SDescription>{<a href="../Protocol-js.html#OpenLayers.Protocol" class=LClass id=link5 onMouseOver="ShowTip(event, 'tt4', 'link5')" onMouseOut="HideTip('tt4')">OpenLayers.Protocol</a>} Optional protocol for the layer.</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.renderers" >renderers</a></td><td class=SDescription>{Array(String)} List of supported Renderer classes. </td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.renderer" >renderer</a></td><td class=SDescription>{<a href="../Renderer-js.html#OpenLayers.Renderer" class=LClass id=link6 onMouseOver="ShowTip(event, 'tt5', 'link6')" onMouseOut="HideTip('tt5')">OpenLayers.Renderer</a>}</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.rendererOptions" >rendererOptions</a></td><td class=SDescription>{Object} Options for the renderer. </td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.geometryType" >geometryType</a></td><td class=SDescription>{String} geometryType allows you to limit the types of geometries this layer supports. </td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.drawn" >drawn</a></td><td class=SDescription>{Boolean} Whether the Vector Layer features have been drawn yet.</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.ratio" >ratio</a></td><td class=SDescription>{Float} This specifies the ratio of the size of the visiblity of the Vector Layer features to the size of the map.</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Layer.Vector.Constructor" >Constructor</a></td><td class=SDescription></td></tr><tr class="SConstructor SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.OpenLayers.Layer.Vector" >OpenLayers.<wbr>Layer.<wbr>Vector</a></td><td class=SDescription>Create a new vector layer</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Layer.Vector.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.destroy" id=link7 onMouseOver="ShowTip(event, 'tt6', 'link7')" onMouseOut="HideTip('tt6')">destroy</a></td><td class=SDescription>Destroy this layer</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.clone" id=link8 onMouseOver="ShowTip(event, 'tt7', 'link8')" onMouseOut="HideTip('tt7')">clone</a></td><td class=SDescription>Create a clone of this layer.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.refresh" id=link9 onMouseOver="ShowTip(event, 'tt8', 'link9')" onMouseOut="HideTip('tt8')">refresh</a></td><td class=SDescription>Ask the layer to request features again and redraw them. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.assignRenderer" id=link10 onMouseOver="ShowTip(event, 'tt9', 'link10')" onMouseOut="HideTip('tt9')">assignRenderer</a></td><td class=SDescription>Iterates through the available renderer implementations and selects and assigns the first one whose “supported()” function returns true.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.displayError" id=link11 onMouseOver="ShowTip(event, 'tt10', 'link11')" onMouseOut="HideTip('tt10')">displayError</a></td><td class=SDescription>Let the user know their browser isn’t supported.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.setMap" id=link12 onMouseOver="ShowTip(event, 'tt11', 'link12')" onMouseOut="HideTip('tt11')">setMap</a></td><td class=SDescription>The layer has been added to the map.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.afterAdd" id=link13 onMouseOver="ShowTip(event, 'tt12', 'link13')" onMouseOut="HideTip('tt12')">afterAdd</a></td><td class=SDescription>Called at the end of the map.addLayer sequence. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.removeMap" id=link14 onMouseOver="ShowTip(event, 'tt13', 'link14')" onMouseOut="HideTip('tt13')">removeMap</a></td><td class=SDescription>The layer has been removed from the map.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.onMapResize" id=link15 onMouseOver="ShowTip(event, 'tt14', 'link15')" onMouseOut="HideTip('tt14')">onMapResize</a></td><td class=SDescription>Notify the renderer of the change in size.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.moveTo" id=link16 onMouseOver="ShowTip(event, 'tt15', 'link16')" onMouseOut="HideTip('tt15')">moveTo</a></td><td class=SDescription>Reset the vector layer’s div so that it once again is lined up with the map. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.display" id=link17 onMouseOver="ShowTip(event, 'tt16', 'link17')" onMouseOut="HideTip('tt16')">display</a></td><td class=SDescription>Hide or show the Layer</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.addFeatures" id=link18 onMouseOver="ShowTip(event, 'tt17', 'link18')" onMouseOut="HideTip('tt17')">addFeatures</a></td><td class=SDescription>Add Features to the layer.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.removeFeatures" id=link19 onMouseOver="ShowTip(event, 'tt18', 'link19')" onMouseOut="HideTip('tt18')">removeFeatures</a></td><td class=SDescription>Remove features from the layer. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.removeAllFeatures" id=link20 onMouseOver="ShowTip(event, 'tt19', 'link20')" onMouseOut="HideTip('tt19')">removeAllFeatures</a></td><td class=SDescription>Remove all features from the layer.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.destroyFeatures" id=link21 onMouseOver="ShowTip(event, 'tt20', 'link21')" onMouseOut="HideTip('tt20')">destroyFeatures</a></td><td class=SDescription>Erase and destroy features on the layer.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.drawFeature" id=link22 onMouseOver="ShowTip(event, 'tt21', 'link22')" onMouseOut="HideTip('tt21')">drawFeature</a></td><td class=SDescription>Draw (or redraw) a feature on the layer. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.eraseFeatures" id=link23 onMouseOver="ShowTip(event, 'tt22', 'link23')" onMouseOut="HideTip('tt22')">eraseFeatures</a></td><td class=SDescription>Erase features from the layer.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.getFeatureFromEvent" id=link24 onMouseOver="ShowTip(event, 'tt23', 'link24')" onMouseOut="HideTip('tt23')">getFeatureFromEvent</a></td><td class=SDescription>Given an event, return a feature if the event occurred over one. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.getFeatureBy" id=link25 onMouseOver="ShowTip(event, 'tt24', 'link25')" onMouseOut="HideTip('tt24')">getFeatureBy</a></td><td class=SDescription>Given a property value, return the feature if it exists in the features array</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.getFeatureById" id=link26 onMouseOver="ShowTip(event, 'tt25', 'link26')" onMouseOut="HideTip('tt25')">getFeatureById</a></td><td class=SDescription>Given a feature id, return the feature if it exists in the features array</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.getFeatureByFid" id=link27 onMouseOver="ShowTip(event, 'tt26', 'link27')" onMouseOut="HideTip('tt26')">getFeatureByFid</a></td><td class=SDescription>Given a feature fid, return the feature if it exists in the features array</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.getFeaturesByAttribute" id=link28 onMouseOver="ShowTip(event, 'tt27', 'link28')" onMouseOut="HideTip('tt27')">getFeaturesByAttribute</a></td><td class=SDescription>Returns an array of features that have the given attribute key set to the given value. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.onFeatureInsert" id=link29 onMouseOver="ShowTip(event, 'tt28', 'link29')" onMouseOut="HideTip('tt28')">onFeatureInsert</a></td><td class=SDescription>method called after a feature is inserted. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.preFeatureInsert" id=link30 onMouseOver="ShowTip(event, 'tt29', 'link30')" onMouseOut="HideTip('tt29')">preFeatureInsert</a></td><td class=SDescription>method called before a feature is inserted. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.getDataExtent" id=link31 onMouseOver="ShowTip(event, 'tt30', 'link31')" onMouseOut="HideTip('tt30')">getDataExtent</a></td><td class=SDescription>Calculates the max extent which includes all of the features.</td></tr></table></div></div><!--END_ND_SUMMARY--></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.Properties"></a>Properties</h3></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.events"></a>events</h3><div class=CBody><p>{<a href="../Events-js.html#OpenLayers.Events" class=LClass >OpenLayers.Events</a>}</p><h4 class=CHeading>Register a listener for a particular event with the following syntax</h4><blockquote><pre class="prettyprint">layer.events.register(type, obj, listener);</pre></blockquote><p>Listeners will be called with a reference to an event object. The properties of this event depends on exactly what happened.</p><h4 class=CHeading>All event objects have at least the following properties</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>object</td><td class=CDLDescription>{Object} A reference to layer.events.object.</td></tr><tr><td class=CDLEntry>element</td><td class=CDLDescription>{DOMElement} A reference to layer.events.element.</td></tr></table><h4 class=CHeading>Supported map event types (in addition to those from <a href="../Layer-js.html#OpenLayers.Layer.events" class=LProperty id=link33 onMouseOver="ShowTip(event, 'tt32', 'link33')" onMouseOut="HideTip('tt32')">OpenLayers.Layer.events</a>)</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>beforefeatureadded</td><td class=CDLDescription>Triggered before a feature is added. Listeners will receive an object with a <b>feature</b> property referencing the feature to be added. To stop the feature from being added, a listener should return false.</td></tr><tr><td class=CDLEntry>beforefeaturesadded</td><td class=CDLDescription>Triggered before an array of features is added. Listeners will receive an object with a <b>features</b> property referencing the feature to be added. To stop the features from being added, a listener should return false.</td></tr><tr><td class=CDLEntry>featureadded</td><td class=CDLDescription>Triggered after a feature is added. The event object passed to listeners will have a <b>feature</b> property with a reference to the added feature.</td></tr><tr><td class=CDLEntry>featuresadded</td><td class=CDLDescription>Triggered after features are added. The event object passed to listeners will have a <b>features</b> property with a reference to an array of added features.</td></tr><tr><td class=CDLEntry>beforefeatureremoved</td><td class=CDLDescription>Triggered before a feature is removed. Listeners will receive an object with a <b>feature</b> property referencing the feature to be removed.</td></tr><tr><td class=CDLEntry>beforefeaturesremoved</td><td class=CDLDescription>Triggered before multiple features are removed. Listeners will receive an object with a <b>features</b> property referencing the features to be removed.</td></tr><tr><td class=CDLEntry>featureremoved</td><td class=CDLDescription>Triggerd after a feature is removed. The event object passed to listeners will have a <b>feature</b> property with a reference to the removed feature.</td></tr><tr><td class=CDLEntry>featuresremoved</td><td class=CDLDescription>Triggered after features are removed. The event object passed to listeners will have a <b>features</b> property with a reference to an array of removed features.</td></tr><tr><td class=CDLEntry>beforefeatureselected</td><td class=CDLDescription>Triggered before a feature is selected. Listeners will receive an object with a <b>feature</b> property referencing the feature to be selected. To stop the feature from being selectd, a listener should return false.</td></tr><tr><td class=CDLEntry>featureselected</td><td class=CDLDescription>Triggered after a feature is selected. Listeners will receive an object with a <b>feature</b> property referencing the selected feature.</td></tr><tr><td class=CDLEntry>featureunselected</td><td class=CDLDescription>Triggered after a feature is unselected. Listeners will receive an object with a <b>feature</b> property referencing the unselected feature.</td></tr><tr><td class=CDLEntry>beforefeaturemodified</td><td class=CDLDescription>Triggered when a feature is selected to be modified. Listeners will receive an object with a <b>feature</b> property referencing the selected feature.</td></tr><tr><td class=CDLEntry>featuremodified</td><td class=CDLDescription>Triggered when a feature has been modified. Listeners will receive an object with a <b>feature</b> property referencing the modified feature.</td></tr><tr><td class=CDLEntry>afterfeaturemodified</td><td class=CDLDescription>Triggered when a feature is finished being modified. Listeners will receive an object with a <b>feature</b> property referencing the modified feature.</td></tr><tr><td class=CDLEntry>vertexmodified</td><td class=CDLDescription>Triggered when a vertex within any feature geometry has been modified. Listeners will receive an object with a <b>feature</b> property referencing the modified feature, a <b>vertex</b> property referencing the vertex modified (always a point geometry), and a <b>pixel</b> property referencing the pixel location of the modification.</td></tr><tr><td class=CDLEntry>vertexremoved</td><td class=CDLDescription>Triggered when a vertex within any feature geometry has been deleted. Listeners will receive an object with a <b>feature</b> property referencing the modified feature, a <b>vertex</b> property referencing the vertex modified (always a point geometry), and a <b>pixel</b> property referencing the pixel location of the removal.</td></tr><tr><td class=CDLEntry>sketchstarted</td><td class=CDLDescription>Triggered when a feature sketch bound for this layer is started. Listeners will receive an object with a <b>feature</b> property referencing the new sketch feature and a <b>vertex</b> property referencing the creation point.</td></tr><tr><td class=CDLEntry>sketchmodified</td><td class=CDLDescription>Triggered when a feature sketch bound for this layer is modified. Listeners will receive an object with a <b>vertex</b> property referencing the modified vertex and a <b>feature</b> property referencing the sketch feature.</td></tr><tr><td class=CDLEntry>sketchcomplete</td><td class=CDLDescription>Triggered when a feature sketch bound for this layer is complete. Listeners will receive an object with a <b>feature</b> property referencing the sketch feature. By returning false, a listener can stop the sketch feature from being added to the layer.</td></tr><tr><td class=CDLEntry>refresh</td><td class=CDLDescription>Triggered when something wants a strategy to ask the protocol for a new set of features.</td></tr></table></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.isBaseLayer"></a>isBaseLayer</h3><div class=CBody><p>{Boolean} The layer is a base layer. Default is false. Set this property in the layer options.</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.isFixed"></a>isFixed</h3><div class=CBody><p>{Boolean} Whether the layer remains in one place while dragging the map. Note that setting this to true will move the layer to the bottom of the layer stack.</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.features"></a>features</h3><div class=CBody><p>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link34 onMouseOver="ShowTip(event, 'tt1', 'link34')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)}</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.filter"></a>filter</h3><div class=CBody><p>{<a href="../Filter-js.html#OpenLayers.Filter" class=LClass id=link35 onMouseOver="ShowTip(event, 'tt2', 'link35')" onMouseOut="HideTip('tt2')">OpenLayers.Filter</a>} The filter set in this layer, a strategy launching read requests can combined this filter with its own filter.</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.selectedFeatures"></a>selectedFeatures</h3><div class=CBody><p>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link36 onMouseOver="ShowTip(event, 'tt1', 'link36')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)}</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.unrenderedFeatures"></a>unrenderedFeatures</h3><div class=CBody><p>{Object} hash of features, keyed by feature.id, that the renderer failed to draw</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.reportError"></a>reportError</h3><div class=CBody><p>{Boolean} report friendly error message when loading of renderer fails.</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.style"></a>style</h3><div class=CBody><p>{Object} Default style for the layer</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.styleMap"></a>styleMap</h3><div class=CBody><p>{<a href="../StyleMap-js.html#OpenLayers.StyleMap" class=LClass >OpenLayers.StyleMap</a>}</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.strategies"></a>strategies</h3><div class=CBody><p>{Array(<a href="../Strategy-js.html#OpenLayers.Strategy" class=LClass id=link37 onMouseOver="ShowTip(event, 'tt3', 'link37')" onMouseOut="HideTip('tt3')">OpenLayers.Strategy</a>})} Optional list of strategies for the layer.</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.protocol"></a>protocol</h3><div class=CBody><p>{<a href="../Protocol-js.html#OpenLayers.Protocol" class=LClass id=link38 onMouseOver="ShowTip(event, 'tt4', 'link38')" onMouseOut="HideTip('tt4')">OpenLayers.Protocol</a>} Optional protocol for the layer.</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.renderers"></a>renderers</h3><div class=CBody><p>{Array(String)} List of supported Renderer classes. Add to this list to add support for additional renderers. This list is ordered: the first renderer which returns true for the ‘supported()’ method will be used, if not defined in the ‘renderer’ option.</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.renderer"></a>renderer</h3><div class=CBody><p>{<a href="../Renderer-js.html#OpenLayers.Renderer" class=LClass id=link39 onMouseOver="ShowTip(event, 'tt5', 'link39')" onMouseOut="HideTip('tt5')">OpenLayers.Renderer</a>}</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.rendererOptions"></a>rendererOptions</h3><div class=CBody><p>{Object} Options for the renderer. See {<a href="../Renderer-js.html#OpenLayers.Renderer" class=LClass id=link40 onMouseOver="ShowTip(event, 'tt5', 'link40')" onMouseOut="HideTip('tt5')">OpenLayers.Renderer</a>} for supported options.</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.geometryType"></a>geometryType</h3><div class=CBody><p>{String} geometryType allows you to limit the types of geometries this layer supports. This should be set to something like “OpenLayers.Geometry.Point” to limit types.</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.drawn"></a>drawn</h3><div class=CBody><p>{Boolean} Whether the Vector Layer features have been drawn yet.</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.ratio"></a>ratio</h3><div class=CBody><p>{Float} This specifies the ratio of the size of the visiblity of the Vector Layer features to the size of the map.</p></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.Constructor"></a>Constructor</h3></div></div>
<div class="CConstructor"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.OpenLayers.Layer.Vector"></a>OpenLayers.<wbr>Layer.<wbr>Vector</h3><div class=CBody><p>Create a new vector layer</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>name</td><td class=CDLDescription>{String} A name for the layer</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object} Optional object with non-default properties to set on the layer.</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="#OpenLayers.Layer.Vector.OpenLayers.Layer.Vector" class=LConstructor id=link41 onMouseOver="ShowTip(event, 'tt31', 'link41')" onMouseOut="HideTip('tt31')">OpenLayers.Layer.Vector</a>} A new vector layer</p></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.Functions"></a>Functions</h3></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.destroy"></a>destroy</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">destroy: function()</td></tr></table></blockquote><p>Destroy this layer</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.clone"></a>clone</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>clone: function (</td><td class="PParameter prettyprint " nowrap>obj</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Create a clone of this layer.</p><p>Note: Features of the layer are also cloned.</p><h4 class=CHeading>Returns</h4><p>{<a href="#OpenLayers.Layer.Vector.OpenLayers.Layer.Vector" class=LConstructor id=link42 onMouseOver="ShowTip(event, 'tt31', 'link42')" onMouseOut="HideTip('tt31')">OpenLayers.Layer.Vector</a>} An exact clone of this layer</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.refresh"></a>refresh</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>refresh: function(</td><td class="PParameter prettyprint " nowrap>obj</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Ask the layer to request features again and redraw them. Triggers the refresh event if the layer is in range and visible.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>obj</td><td class=CDLDescription>{Object} Optional object with properties for any listener of the refresh event.</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.assignRenderer"></a>assignRenderer</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">assignRenderer: function()</td></tr></table></blockquote><p>Iterates through the available renderer implementations and selects and assigns the first one whose “supported()” function returns true.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.displayError"></a>displayError</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">displayError: function()</td></tr></table></blockquote><p>Let the user know their browser isn’t supported.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.setMap"></a>setMap</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>setMap: function(</td><td class="PParameter prettyprint " nowrap>map</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>The layer has been added to the map.</p><p>If there is no renderer set, the layer can’t be used. Remove it. Otherwise, give the renderer a reference to the map and set its size.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>map</td><td class=CDLDescription>{<a href="../Map-js.html#OpenLayers.Map" class=LClass id=link43 onMouseOver="ShowTip(event, 'tt33', 'link43')" onMouseOut="HideTip('tt33')">OpenLayers.Map</a>}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.afterAdd"></a>afterAdd</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">afterAdd: function()</td></tr></table></blockquote><p>Called at the end of the map.addLayer sequence. At this point, the map will have a base layer. Any autoActivate strategies will be activated here.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.removeMap"></a>removeMap</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>removeMap: function(</td><td class="PParameter prettyprint " nowrap>map</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>The layer has been removed from the map.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>map</td><td class=CDLDescription>{<a href="../Map-js.html#OpenLayers.Map" class=LClass id=link44 onMouseOver="ShowTip(event, 'tt33', 'link44')" onMouseOut="HideTip('tt33')">OpenLayers.Map</a>}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.onMapResize"></a>onMapResize</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">onMapResize: function()</td></tr></table></blockquote><p>Notify the renderer of the change in size.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.moveTo"></a>moveTo</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>moveTo: function(</td><td class="PParameter prettyprint " nowrap>bounds,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>zoomChanged,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>dragging</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Reset the vector layer’s div so that it once again is lined up with the map. Notify the renderer of the change of extent, and in the case of a change of zoom level (resolution), have the renderer redraw features.</p><p>If the layer has not yet been drawn, cycle through the layer’s features and draw each one.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>bounds</td><td class=CDLDescription>{<a href="../BaseTypes/Bounds-js.html#OpenLayers.Bounds" class=LClass id=link45 onMouseOver="ShowTip(event, 'tt34', 'link45')" onMouseOut="HideTip('tt34')">OpenLayers.Bounds</a>}</td></tr><tr><td class=CDLEntry>zoomChanged</td><td class=CDLDescription>{Boolean}</td></tr><tr><td class=CDLEntry>dragging</td><td class=CDLDescription>{Boolean}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.display"></a>display</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>display: function(</td><td class="PParameter prettyprint " nowrap>display</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Hide or show the Layer</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>display</td><td class=CDLDescription>{Boolean}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.addFeatures"></a>addFeatures</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>addFeatures: function(</td><td class="PParameter prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>options</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Add Features to the layer.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>features</td><td class=CDLDescription>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link46 onMouseOver="ShowTip(event, 'tt1', 'link46')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)}</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.removeFeatures"></a>removeFeatures</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>removeFeatures: function(</td><td class="PParameter prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>options</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Remove features from the layer. This erases any drawn features and removes them from the layer’s control. The beforefeatureremoved and featureremoved events will be triggered for each feature. The featuresremoved event will be triggered after all features have been removed. To supress event triggering, use the silent option.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>features</td><td class=CDLDescription>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link47 onMouseOver="ShowTip(event, 'tt1', 'link47')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)} List of features to be removed.</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object} Optional properties for changing behavior of the removal.</td></tr></table><h4 class=CHeading>Valid options</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>silent</td><td class=CDLDescription>{Boolean} Supress event triggering. Default is false.</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.removeAllFeatures"></a>removeAllFeatures</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>removeAllFeatures: function(</td><td class="PParameter prettyprint " nowrap>options</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Remove all features from the layer.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object} Optional properties for changing behavior of the removal.</td></tr></table><h4 class=CHeading>Valid options</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>silent</td><td class=CDLDescription>{Boolean} Supress event triggering. Default is false.</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.destroyFeatures"></a>destroyFeatures</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>destroyFeatures: function(</td><td class="PParameter prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>options</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Erase and destroy features on the layer.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>features</td><td class=CDLDescription>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link48 onMouseOver="ShowTip(event, 'tt1', 'link48')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)} An optional array of features to destroy. If not supplied, all features on the layer will be destroyed.</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.drawFeature"></a>drawFeature</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>drawFeature: function(</td><td class="PParameter prettyprint " nowrap>feature,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>style</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Draw (or redraw) a feature on the layer. If the optional style argument is included, this style will be used. If no style is included, the feature’s style will be used. If the feature doesn’t have a style, the layer’s style will be used.</p><p>This function is not designed to be used when adding features to the layer (use addFeatures instead). It is meant to be used when the style of a feature has changed, or in some other way needs to visually updated <b>after</b> it has already been added to a layer. You must add the feature to the layer for most layer-related events to happen.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>feature</td><td class=CDLDescription>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link49 onMouseOver="ShowTip(event, 'tt1', 'link49')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>}</td></tr><tr><td class=CDLEntry>style</td><td class=CDLDescription>{String | Object} Named render intent or full symbolizer object.</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.eraseFeatures"></a>eraseFeatures</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>eraseFeatures: function(</td><td class="PParameter prettyprint " nowrap>features</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Erase features from the layer.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>features</td><td class=CDLDescription>{Array(<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link50 onMouseOver="ShowTip(event, 'tt1', 'link50')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>)}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.getFeatureFromEvent"></a>getFeatureFromEvent</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeatureFromEvent: function(</td><td class="PParameter prettyprint " nowrap>evt</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Given an event, return a feature if the event occurred over one. Otherwise, return null.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>evt</td><td class=CDLDescription>{Event}</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link51 onMouseOver="ShowTip(event, 'tt1', 'link51')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>} A feature if one was under the event.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.getFeatureBy"></a>getFeatureBy</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeatureBy: function(</td><td class="PParameter prettyprint " nowrap>property,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>value</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Given a property value, return the feature if it exists in the features array</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>property</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>value</td><td class=CDLDescription>{String}</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link52 onMouseOver="ShowTip(event, 'tt1', 'link52')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>} A feature corresponding to the given property value or null if there is no such feature.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.getFeatureById"></a>getFeatureById</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeatureById: function(</td><td class="PParameter prettyprint " nowrap>featureId</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Given a feature id, return the feature if it exists in the features array</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>featureId</td><td class=CDLDescription>{String}</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link53 onMouseOver="ShowTip(event, 'tt1', 'link53')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>} A feature corresponding to the given featureId or null if there is no such feature.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.getFeatureByFid"></a>getFeatureByFid</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeatureByFid: function(</td><td class="PParameter prettyprint " nowrap>featureFid</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Given a feature fid, return the feature if it exists in the features array</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>featureFid</td><td class=CDLDescription>{String}</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link54 onMouseOver="ShowTip(event, 'tt1', 'link54')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>} A feature corresponding to the given featureFid or null if there is no such feature.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.getFeaturesByAttribute"></a>getFeaturesByAttribute</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeaturesByAttribute: function(</td><td class="PParameter prettyprint " nowrap>attrName,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>attrValue</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Returns an array of features that have the given attribute key set to the given value. Comparison of attribute values takes care of datatypes, e.g. the string ‘1234’ is not equal to the number 1234.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>attrName</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>attrValue</td><td class=CDLDescription>{Mixed}</td></tr></table><h4 class=CHeading>Returns</h4><p>Array({<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link55 onMouseOver="ShowTip(event, 'tt1', 'link55')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>}) An array of features that have the passed named attribute set to the given value.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.onFeatureInsert"></a>onFeatureInsert</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>onFeatureInsert: function(</td><td class="PParameter prettyprint " nowrap>feature</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>method called after a feature is inserted. Does nothing by default. Override this if you need to do something on feature updates.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>feature</td><td class=CDLDescription>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link56 onMouseOver="ShowTip(event, 'tt1', 'link56')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.preFeatureInsert"></a>preFeatureInsert</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>preFeatureInsert: function(</td><td class="PParameter prettyprint " nowrap>feature</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>method called before a feature is inserted. Does nothing by default. Override this if you need to do something when features are first added to the layer, but before they are drawn, such as adjust the style.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>feature</td><td class=CDLDescription>{<a href="../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link57 onMouseOver="ShowTip(event, 'tt1', 'link57')" onMouseOut="HideTip('tt1')">OpenLayers.Feature.Vector</a>}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.getDataExtent"></a>getDataExtent</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">getDataExtent: function ()</td></tr></table></blockquote><p>Calculates the max extent which includes all of the features.</p><h4 class=CHeading>Returns</h4><p>{<a href="../BaseTypes/Bounds-js.html#OpenLayers.Bounds" class=LClass id=link58 onMouseOver="ShowTip(event, 'tt34', 'link58')" onMouseOut="HideTip('tt34')">OpenLayers.Bounds</a>} or null if the layer has no features with geometries.</p></div></div></div>
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<div class=CToolTip id="tt1"><div class=CClass>Vector features use the OpenLayers.Geometry classes as geometry description. </div></div><div class=CToolTip id="tt2"><div class=CClass>This class represents an OGC Filter.</div></div><div class=CToolTip id="tt3"><div class=CClass>Abstract vector layer strategy class. </div></div><div class=CToolTip id="tt4"><div class=CClass>Abstract vector layer protocol class. </div></div><div class=CToolTip id="tt5"><div class=CClass>This is the base class for all renderers.</div></div><div class=CToolTip id="tt6"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">destroy: function()</td></tr></table></blockquote>Destroy this layer</div></div><div class=CToolTip id="tt7"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>clone: function (</td><td class="PParameter prettyprint " nowrap>obj</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Create a clone of this layer.</div></div><div class=CToolTip id="tt8"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>refresh: function(</td><td class="PParameter prettyprint " nowrap>obj</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Ask the layer to request features again and redraw them. </div></div><div class=CToolTip id="tt9"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">assignRenderer: function()</td></tr></table></blockquote>Iterates through the available renderer implementations and selects and assigns the first one whose “supported()” function returns true.</div></div><div class=CToolTip id="tt10"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">displayError: function()</td></tr></table></blockquote>Let the user know their browser isn’t supported.</div></div><div class=CToolTip id="tt11"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>setMap: function(</td><td class="PParameter prettyprint " nowrap>map</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>The layer has been added to the map.</div></div><div class=CToolTip id="tt12"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">afterAdd: function()</td></tr></table></blockquote>Called at the end of the map.addLayer sequence. </div></div><div class=CToolTip id="tt13"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>removeMap: function(</td><td class="PParameter prettyprint " nowrap>map</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>The layer has been removed from the map.</div></div><div class=CToolTip id="tt14"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">onMapResize: function()</td></tr></table></blockquote>Notify the renderer of the change in size.</div></div><div class=CToolTip id="tt15"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>moveTo: function(</td><td class="PParameter prettyprint " nowrap>bounds,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>zoomChanged,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>dragging</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Reset the vector layer’s div so that it once again is lined up with the map. </div></div><div class=CToolTip id="tt16"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>display: function(</td><td class="PParameter prettyprint " nowrap>display</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Hide or show the Layer</div></div><div class=CToolTip id="tt17"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>addFeatures: function(</td><td class="PParameter prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>options</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Add Features to the layer.</div></div><div class=CToolTip id="tt18"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>removeFeatures: function(</td><td class="PParameter prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>options</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Remove features from the layer. </div></div><div class=CToolTip id="tt19"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>removeAllFeatures: function(</td><td class="PParameter prettyprint " nowrap>options</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Remove all features from the layer.</div></div><div class=CToolTip id="tt20"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>destroyFeatures: function(</td><td class="PParameter prettyprint " nowrap>features,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>options</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Erase and destroy features on the layer.</div></div><div class=CToolTip id="tt21"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>drawFeature: function(</td><td class="PParameter prettyprint " nowrap>feature,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>style</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Draw (or redraw) a feature on the layer. </div></div><div class=CToolTip id="tt22"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>eraseFeatures: function(</td><td class="PParameter prettyprint " nowrap>features</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Erase features from the layer.</div></div><div class=CToolTip id="tt23"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeatureFromEvent: function(</td><td class="PParameter prettyprint " nowrap>evt</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Given an event, return a feature if the event occurred over one. </div></div><div class=CToolTip id="tt24"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeatureBy: function(</td><td class="PParameter prettyprint " nowrap>property,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>value</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Given a property value, return the feature if it exists in the features array</div></div><div class=CToolTip id="tt25"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeatureById: function(</td><td class="PParameter prettyprint " nowrap>featureId</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Given a feature id, return the feature if it exists in the features array</div></div><div class=CToolTip id="tt26"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeatureByFid: function(</td><td class="PParameter prettyprint " nowrap>featureFid</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Given a feature fid, return the feature if it exists in the features array</div></div><div class=CToolTip id="tt27"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>getFeaturesByAttribute: function(</td><td class="PParameter prettyprint " nowrap>attrName,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>attrValue</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Returns an array of features that have the given attribute key set to the given value. </div></div><div class=CToolTip id="tt28"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>onFeatureInsert: function(</td><td class="PParameter prettyprint " nowrap>feature</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>method called after a feature is inserted. </div></div><div class=CToolTip id="tt29"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters prettyprint "nowrap>preFeatureInsert: function(</td><td class="PParameter prettyprint " nowrap>feature</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>method called before a feature is inserted. </div></div><div class=CToolTip id="tt30"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">getDataExtent: function ()</td></tr></table></blockquote>Calculates the max extent which includes all of the features.</div></div><div class=CToolTip id="tt31"><div class=CConstructor>Create a new vector layer</div></div><div class=CToolTip id="tt32"><div class=CProperty>{OpenLayers.Events}</div></div><div class=CToolTip id="tt33"><div class=CClass>Instances of OpenLayers.Map are interactive maps embedded in a web page. </div></div><div class=CToolTip id="tt34"><div class=CClass>Instances of this class represent bounding boxes. </div></div><!--END_ND_TOOLTIPS-->
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