1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.14"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>Qwt User's Guide: QwtSeriesData< T > Class Template Reference</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtreedata.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
$(document).ready(initResizable);
/* @license-end */</script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">Qwt User's Guide
 <span id="projectnumber">6.1.4</span>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.14 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
var searchBox = new SearchBox("searchBox", "search",false,'Search');
/* @license-end */
</script>
<script type="text/javascript" src="menudata.js"></script>
<script type="text/javascript" src="menu.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
$(function() {
initMenu('',true,false,'search.php','Search');
$(document).ready(function() { init_search(); });
});
/* @license-end */</script>
<div id="main-nav"></div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
<div id="nav-tree">
<div id="nav-tree-contents">
<div id="nav-sync" class="sync"></div>
</div>
</div>
<div id="splitbar" style="-moz-user-select:none;"
class="ui-resizable-handle">
</div>
</div>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
$(document).ready(function(){initNavTree('class_qwt_series_data.html','');});
/* @license-end */
</script>
<div id="doc-content">
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<div class="header">
<div class="summary">
<a href="#pub-methods">Public Member Functions</a> |
<a href="#pro-attribs">Protected Attributes</a> |
<a href="class_qwt_series_data-members.html">List of all members</a> </div>
<div class="headertitle">
<div class="title">QwtSeriesData< T > Class Template Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div> </div>
</div><!--header-->
<div class="contents">
<p>Abstract interface for iterating over samples.
<a href="class_qwt_series_data.html#details">More...</a></p>
<p><code>#include <<a class="el" href="qwt__series__data_8h_source.html">qwt_series_data.h</a>></code></p>
<div class="dynheader">
Inheritance diagram for QwtSeriesData< T >:</div>
<div class="dyncontent">
<div class="center"><img src="class_qwt_series_data__inherit__graph.png" border="0" usemap="#_qwt_series_data_3_01_t_01_4_inherit__map" alt="Inheritance graph"/></div>
<map name="_qwt_series_data_3_01_t_01_4_inherit__map" id="_qwt_series_data_3_01_t_01_4_inherit__map">
<area shape="rect" id="node2" href="class_qwt_array_series_data.html" title="Template class for data, that is organized as QVector. " alt="" coords="5,80,184,107"/>
</map>
<center><span class="legend">[<a target="top" href="graph_legend.html">legend</a>]</span></center></div>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a3f075340d18fb112a342d74716eb8d9c"><td class="memItemLeft" align="right" valign="top"><a id="a3f075340d18fb112a342d74716eb8d9c"></a>
 </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_series_data.html#a3f075340d18fb112a342d74716eb8d9c">QwtSeriesData</a> ()</td></tr>
<tr class="memdesc:a3f075340d18fb112a342d74716eb8d9c"><td class="mdescLeft"> </td><td class="mdescRight">Constructor. <br /></td></tr>
<tr class="separator:a3f075340d18fb112a342d74716eb8d9c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a841a56f909879d599a385b9c3d046745"><td class="memItemLeft" align="right" valign="top"><a id="a841a56f909879d599a385b9c3d046745"></a>
virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_series_data.html#a841a56f909879d599a385b9c3d046745">~QwtSeriesData</a> ()</td></tr>
<tr class="memdesc:a841a56f909879d599a385b9c3d046745"><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <br /></td></tr>
<tr class="separator:a841a56f909879d599a385b9c3d046745"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3cfe5b26fc55a887ac85b0103ae80a3e"><td class="memItemLeft" align="right" valign="top">virtual size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_series_data.html#a3cfe5b26fc55a887ac85b0103ae80a3e">size</a> () const =0</td></tr>
<tr class="separator:a3cfe5b26fc55a887ac85b0103ae80a3e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae8650d16c07c58f01897ab48658a3266"><td class="memItemLeft" align="right" valign="top">virtual T </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_series_data.html#ae8650d16c07c58f01897ab48658a3266">sample</a> (size_t i) const =0</td></tr>
<tr class="separator:ae8650d16c07c58f01897ab48658a3266"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aedb969ba51a27d88d26ad7f7cb1c2c7f"><td class="memItemLeft" align="right" valign="top">virtual QRectF </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_series_data.html#aedb969ba51a27d88d26ad7f7cb1c2c7f">boundingRect</a> () const =0</td></tr>
<tr class="separator:aedb969ba51a27d88d26ad7f7cb1c2c7f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a391b4601a7454b2f9582fbc2662d108e"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_series_data.html#a391b4601a7454b2f9582fbc2662d108e">setRectOfInterest</a> (const QRectF &rect)</td></tr>
<tr class="separator:a391b4601a7454b2f9582fbc2662d108e"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-attribs"></a>
Protected Attributes</h2></td></tr>
<tr class="memitem:a24fbbcb0baa0c728117d2e6764d00414"><td class="memItemLeft" align="right" valign="top"><a id="a24fbbcb0baa0c728117d2e6764d00414"></a>
QRectF </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_series_data.html#a24fbbcb0baa0c728117d2e6764d00414">d_boundingRect</a></td></tr>
<tr class="memdesc:a24fbbcb0baa0c728117d2e6764d00414"><td class="mdescLeft"> </td><td class="mdescRight">Can be used to cache a calculated bounding rectangle. <br /></td></tr>
<tr class="separator:a24fbbcb0baa0c728117d2e6764d00414"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template<typename T><br />
class QwtSeriesData< T ></h3>
<p>Abstract interface for iterating over samples. </p>
<p>Qwt offers several implementations of the <a class="el" href="class_qwt_series_data.html" title="Abstract interface for iterating over samples. ">QwtSeriesData</a> API, but in situations, where data of an application specific format needs to be displayed, without having to copy it, it is recommended to implement an individual data access.</p>
<p>A subclass of <a class="el" href="class_qwt_series_data.html">QwtSeriesData<QPointF></a> must implement:</p>
<ul>
<li><a class="el" href="class_qwt_series_data.html#a3cfe5b26fc55a887ac85b0103ae80a3e">size()</a><br />
Should return number of data points.</li>
<li><a class="el" href="class_qwt_series_data.html#ae8650d16c07c58f01897ab48658a3266">sample()</a><br />
Should return values x and y values of the sample at specific position as QPointF object.</li>
<li><a class="el" href="class_qwt_series_data.html#aedb969ba51a27d88d26ad7f7cb1c2c7f">boundingRect()</a><br />
Should return the bounding rectangle of the data series. It is used for autoscaling and might help certain algorithms for displaying the data. You can use qwtBoundingRect() for an implementation but often it is possible to implement a more efficient algorithm depending on the characteristics of the series. The member d_boundingRect is intended for caching the calculated rectangle. </li>
</ul>
</div><h2 class="groupheader">Member Function Documentation</h2>
<a id="aedb969ba51a27d88d26ad7f7cb1c2c7f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aedb969ba51a27d88d26ad7f7cb1c2c7f">◆ </a></span>boundingRect()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template<typename T> </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">virtual QRectF <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< T >::boundingRect </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Calculate the bounding rect of all samples</p>
<p>The bounding rect is necessary for autoscaling and can be used for a couple of painting optimizations.</p>
<p>qwtBoundingRect(...) offers slow implementations iterating over the samples. For large sets it is recommended to implement something faster f.e. by caching the bounding rectangle.</p>
<dl class="section return"><dt>Returns</dt><dd>Bounding rectangle </dd></dl>
<p>Implemented in <a class="el" href="class_qwt_trading_chart_data.html#a5ace88d32a907e2570a0b4e7fab1bfa4">QwtTradingChartData</a>, <a class="el" href="class_qwt_set_series_data.html#a517acc2c19510ae760de3be09e1025e5">QwtSetSeriesData</a>, <a class="el" href="class_qwt_interval_series_data.html#a54b22d44d2e9ec8e3be10afd337481cd">QwtIntervalSeriesData</a>, <a class="el" href="class_qwt_point3_d_series_data.html#adf2e75191a162d1f917f427f33311375">QwtPoint3DSeriesData</a>, <a class="el" href="class_qwt_point_series_data.html#af30365e69684c7ca5725018b4b837b0e">QwtPointSeriesData</a>, <a class="el" href="class_qwt_synthetic_point_data.html#aff24a4e2fd18c8a022bc1a428c0ccf5d">QwtSyntheticPointData</a>, <a class="el" href="class_qwt_c_pointer_data.html#a92637cf121b0a94a1656d658e90a9f5f">QwtCPointerData</a>, and <a class="el" href="class_qwt_point_array_data.html#acf2e7b6745e1867cf82421bae146671b">QwtPointArrayData</a>.</p>
</div>
</div>
<a id="ae8650d16c07c58f01897ab48658a3266"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae8650d16c07c58f01897ab48658a3266">◆ </a></span>sample()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template<typename T> </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">virtual T <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< T >::sample </td>
<td>(</td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>i</em></td><td>)</td>
<td> const</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Return a sample </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">i</td><td>Index </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Sample at position i </dd></dl>
<p>Implemented in <a class="el" href="class_qwt_array_series_data.html#a370320fa49b8056656b61f4df79b778b">QwtArraySeriesData< T ></a>, <a class="el" href="class_qwt_array_series_data.html#a370320fa49b8056656b61f4df79b778b">QwtArraySeriesData< QwtIntervalSample ></a>, <a class="el" href="class_qwt_array_series_data.html#a370320fa49b8056656b61f4df79b778b">QwtArraySeriesData< QwtOHLCSample ></a>, <a class="el" href="class_qwt_array_series_data.html#a370320fa49b8056656b61f4df79b778b">QwtArraySeriesData< QPointF ></a>, <a class="el" href="class_qwt_array_series_data.html#a370320fa49b8056656b61f4df79b778b">QwtArraySeriesData< QwtPoint3D ></a>, <a class="el" href="class_qwt_array_series_data.html#a370320fa49b8056656b61f4df79b778b">QwtArraySeriesData< QwtSetSample ></a>, <a class="el" href="class_qwt_synthetic_point_data.html#ac8be76b9c09c80fec51c978ad020aaec">QwtSyntheticPointData</a>, <a class="el" href="class_qwt_c_pointer_data.html#a7e6e149f5eadd13dd9ed5e1343f09527">QwtCPointerData</a>, and <a class="el" href="class_qwt_point_array_data.html#a10885ad1783151831a11f1cc659a98c5">QwtPointArrayData</a>.</p>
</div>
</div>
<a id="a391b4601a7454b2f9582fbc2662d108e"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a391b4601a7454b2f9582fbc2662d108e">◆ </a></span>setRectOfInterest()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template<typename T > </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">void <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< T >::setRectOfInterest </td>
<td>(</td>
<td class="paramtype">const QRectF & </td>
<td class="paramname"><em>rect</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">virtual</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Set a the "rect of interest"</p>
<p><a class="el" href="class_qwt_plot_series_item.html" title="Base class for plot items representing a series of samples. ">QwtPlotSeriesItem</a> defines the current area of the plot canvas as "rectangle of interest" ( <a class="el" href="class_qwt_plot_series_item.html#a890792d0f44e341812b5283c249608b2" title="Update the item to changes of the axes scale division. ">QwtPlotSeriesItem::updateScaleDiv()</a> ). It can be used to implement different levels of details.</p>
<p>The default implementation does nothing.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">rect</td><td>Rectangle of interest </td></tr>
</table>
</dd>
</dl>
<p>Reimplemented in <a class="el" href="class_qwt_synthetic_point_data.html#a39cc8512e7d8beecde003f7781174b84">QwtSyntheticPointData</a>.</p>
</div>
</div>
<a id="a3cfe5b26fc55a887ac85b0103ae80a3e"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3cfe5b26fc55a887ac85b0103ae80a3e">◆ </a></span>size()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template<typename T> </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">virtual size_t <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< T >::size </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<dl class="section return"><dt>Returns</dt><dd>Number of samples </dd></dl>
<p>Implemented in <a class="el" href="class_qwt_array_series_data.html#ab6cf4d74d9c429bd0479572659534cce">QwtArraySeriesData< T ></a>, <a class="el" href="class_qwt_array_series_data.html#ab6cf4d74d9c429bd0479572659534cce">QwtArraySeriesData< QwtIntervalSample ></a>, <a class="el" href="class_qwt_array_series_data.html#ab6cf4d74d9c429bd0479572659534cce">QwtArraySeriesData< QwtOHLCSample ></a>, <a class="el" href="class_qwt_array_series_data.html#ab6cf4d74d9c429bd0479572659534cce">QwtArraySeriesData< QPointF ></a>, <a class="el" href="class_qwt_array_series_data.html#ab6cf4d74d9c429bd0479572659534cce">QwtArraySeriesData< QwtPoint3D ></a>, <a class="el" href="class_qwt_array_series_data.html#ab6cf4d74d9c429bd0479572659534cce">QwtArraySeriesData< QwtSetSample ></a>, <a class="el" href="class_qwt_synthetic_point_data.html#a44e4aedcd2eae58e57811c1458ef17a2">QwtSyntheticPointData</a>, <a class="el" href="class_qwt_c_pointer_data.html#aa8f1b8d366e873bbeac9f1edb21e5ced">QwtCPointerData</a>, and <a class="el" href="class_qwt_point_array_data.html#afe27e8d28457c5f33df5a03109f58a14">QwtPointArrayData</a>.</p>
</div>
</div>
</div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
<ul>
<li class="navelem"><a class="el" href="class_qwt_series_data.html">QwtSeriesData</a></li>
<li class="footer">Generated by
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.14 </li>
</ul>
</div>
</body>
</html>
|
