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<p>
Next: <a href="Scatter-Group.html#Scatter-Group" accesskey="n" rel="next">Scatter Group</a>, Previous: <a href="Line-Series.html#Line-Series" accesskey="p" rel="prev">Line Series</a>, Up: <a href="Object-Groups.html#Object-Groups" accesskey="u" rel="up">Object Groups</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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<a name="Quiver-Group-1"></a>
<h4 class="subsubsection">15.4.6.7 Quiver Group</h4>
<a name="index-group-objects"></a>
<a name="index-quiver-group"></a>
<p>Quiver series objects are created by the <code>quiver</code> or <code>quiver3</code>
functions. Each <code>hggroup</code> element of the series contains three line
objects as children representing the body and head of the arrow,
together with a marker as the point of origin of the arrows. The
properties of the quiver series are
</p>
<dl compact="compact">
<dt><code>autoscale</code></dt>
<dt><code>autoscalefactor</code></dt>
<dd><p>Flag whether the length of the arrows is scaled or defined directly from
the <var>u</var>, <var>v</var> and <var>w</var> data. If the arrow length is flagged
as being scaled by the <code>autoscale</code> property, then the length of the
autoscaled arrow is controlled by the <code>autoscalefactor</code>.
</p>
</dd>
<dt><code>maxheadsize</code></dt>
<dd><p>This property controls the size of the head of the arrows in the quiver
series. The default value is 0.2.
</p>
</dd>
<dt><code>showarrowhead</code></dt>
<dd><p>Flag whether the arrow heads are displayed in the quiver plot.
</p>
</dd>
<dt><code>color</code></dt>
<dd><p>The RGB color or color name of the line objects of the quiver. See <a href="Colors.html#Colors">Colors</a>.
</p>
</dd>
<dt><code>linewidth</code></dt>
<dt><code>linestyle</code></dt>
<dd><p>The line width and style of the line objects of the quiver. See <a href="Line-Styles.html#Line-Styles">Line Styles</a>.
</p>
</dd>
<dt><code>marker</code></dt>
<dt><code>markerfacecolor</code></dt>
<dt><code>markersize</code></dt>
<dd><p>The line and fill color of the marker objects at the original of the
arrows. See <a href="Colors.html#Colors">Colors</a>.
</p>
</dd>
<dt><code>xdata</code></dt>
<dt><code>ydata</code></dt>
<dt><code>zdata</code></dt>
<dd><p>The origins of the values of the vector field.
</p>
</dd>
<dt><code>udata</code></dt>
<dt><code>vdata</code></dt>
<dt><code>wdata</code></dt>
<dd><p>The values of the vector field to plot.
</p>
</dd>
<dt><code>xdatasource</code></dt>
<dt><code>ydatasource</code></dt>
<dt><code>zdatasource</code></dt>
<dt><code>udatasource</code></dt>
<dt><code>vdatasource</code></dt>
<dt><code>wdatasource</code></dt>
<dd><p>Data source variables.
</p></dd>
</dl>
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