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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>Wt examples: Charts example</title>
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<h1>Charts example</h1><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Classes</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">class </td><td class="memItemRight" valign="bottom"><a class="el" href="classChartConfig.html">ChartConfig</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A class that allows configuration of a cartesian chart. <a href="classChartConfig.html#_details">More...</a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">class </td><td class="memItemRight" valign="bottom"><a class="el" href="classTimeSeriesExample.html">TimeSeriesExample</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A widget that demonstrates a times series chart. <a href="classTimeSeriesExample.html#_details">More...</a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">class </td><td class="memItemRight" valign="bottom"><a class="el" href="classCategoryExample.html">CategoryExample</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A Widget that demonstrates a category chart. <a href="classCategoryExample.html#_details">More...</a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">class </td><td class="memItemRight" valign="bottom"><a class="el" href="classScatterPlotExample.html">ScatterPlotExample</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A Widget that demonstrates a scatter plot. <a href="classScatterPlotExample.html#_details">More...</a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">class </td><td class="memItemRight" valign="bottom"><a class="el" href="classPieExample.html">PieExample</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A Widget that demonstrates a Pie chart. <a href="classPieExample.html#_details">More...</a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">class </td><td class="memItemRight" valign="bottom"><a class="el" href="classChartsExample.html">ChartsExample</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A widget that demonstrates various aspects of the charting lib. <a href="classChartsExample.html#_details">More...</a><br></td></tr>
<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__chartsexample.html#g1ce51cd14c57073cb7839d5e05b59c65">readFromCsv</a> (std::istream &f, <a class="elRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractItemModel.html">Wt::WAbstractItemModel</a> *model, int numRows=-1, bool firstLineIsHeaders=true)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Utility function that reads a model from a CSV file. <a href="#g1ce51cd14c57073cb7839d5e05b59c65"></a><br></td></tr>
</table>
<hr><h2>Function Documentation</h2>
<a class="anchor" name="g1ce51cd14c57073cb7839d5e05b59c65"></a><!-- doxytag: member="CsvUtil.h::readFromCsv" ref="g1ce51cd14c57073cb7839d5e05b59c65" args="(std::istream &f, Wt::WAbstractItemModel *model, int numRows=-1, bool firstLineIsHeaders=true)" -->
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<td class="memname">void readFromCsv </td>
<td>(</td>
<td class="paramtype">std::istream & </td>
<td class="paramname"> <em>f</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="elRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractItemModel.html">Wt::WAbstractItemModel</a> * </td>
<td class="paramname"> <em>model</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>numRows</em> = <code>-1</code>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool </td>
<td class="paramname"> <em>firstLineIsHeaders</em> = <code>true</code></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Utility function that reads a model from a CSV file.
<p>
<p>Definition at line <a class="el" href="treeview-dragdrop_2CsvUtil_8C-source.html#l00009">9</a> of file <a class="el" href="treeview-dragdrop_2CsvUtil_8C-source.html">CsvUtil.C</a>.</p>
<div class="fragment"><pre class="fragment"><a name="l00011"></a>00011 {
<a name="l00012"></a>00012 <span class="keywordtype">int</span> csvRow = 0;
<a name="l00013"></a>00013
<a name="l00014"></a>00014 <span class="keywordflow">while</span> (f) {
<a name="l00015"></a>00015 std::string line;
<a name="l00016"></a>00016 getline(f, line);
<a name="l00017"></a>00017
<a name="l00018"></a>00018 <span class="keywordflow">if</span> (f) {
<a name="l00019"></a>00019 <span class="keyword">typedef</span> boost::tokenizer<boost::escaped_list_separator<char> >
<a name="l00020"></a>00020 CsvTokenizer;
<a name="l00021"></a>00021 CsvTokenizer tok(line);
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="keywordtype">int</span> col = 0;
<a name="l00024"></a>00024 <span class="keywordflow">for</span> (CsvTokenizer::iterator i = tok.begin();
<a name="l00025"></a>00025 i != tok.end(); ++i, ++col) {
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="keywordflow">if</span> (col >= model-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractItemModel.html#bcf7912a95a0a60f8e9b1c37d30b8383">columnCount</a>())
<a name="l00028"></a>00028 model-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractItemModel.html#1eded9eb68b9247ae2ff371f74a5e5f2">insertColumns</a>(model-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractItemModel.html#bcf7912a95a0a60f8e9b1c37d30b8383">columnCount</a>(),
<a name="l00029"></a>00029 col + 1 - model-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractItemModel.html#bcf7912a95a0a60f8e9b1c37d30b8383">columnCount</a>());
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="keywordflow">if</span> (firstLineIsHeaders && csvRow == 0)
<a name="l00032"></a>00032 model-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractItemModel.html#57f5d417f933440db0d38ece7dd370f4">setHeaderData</a>(col, boost::any(<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WString.html#17afc7c43b5b7a710047be4a2c639575">Wt::WString::fromUTF8</a>(*i)));
<a name="l00033"></a>00033 <span class="keywordflow">else</span> {
<a name="l00034"></a>00034 <span class="keywordtype">int</span> dataRow = firstLineIsHeaders ? csvRow - 1 : csvRow;
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="keywordflow">if</span> (numRows != -1 && dataRow >= numRows)
<a name="l00037"></a>00037 <span class="keywordflow">return</span>;
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="keywordflow">if</span> (dataRow >= model-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractItemModel.html#b0709a8f71fd5df882f29bb29fd055f0">rowCount</a>())
<a name="l00040"></a>00040 model-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractItemModel.html#bcafc38dc24fd9edf70eafe834ca411d">insertRows</a>(model-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractItemModel.html#b0709a8f71fd5df882f29bb29fd055f0">rowCount</a>(),
<a name="l00041"></a>00041 dataRow + 1 - model-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractItemModel.html#b0709a8f71fd5df882f29bb29fd055f0">rowCount</a>());
<a name="l00042"></a>00042
<a name="l00043"></a>00043 std::string s = *i;
<a name="l00044"></a>00044
<a name="l00045"></a>00045 boost::any data;
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="keywordtype">char</span> *end;
<a name="l00048"></a>00048 <span class="keywordtype">int</span> i = std::strtol(s.c_str(), &end, 10);
<a name="l00049"></a>00049 <span class="keywordflow">if</span> (*end == 0)
<a name="l00050"></a>00050 data = boost::any(i);
<a name="l00051"></a>00051 <span class="keywordflow">else</span> {
<a name="l00052"></a>00052 <span class="keywordtype">double</span> d = std::strtod(s.c_str(), &end);
<a name="l00053"></a>00053 <span class="keywordflow">if</span> (*end == 0)
<a name="l00054"></a>00054 data = boost::any(d);
<a name="l00055"></a>00055 <span class="keywordflow">else</span>
<a name="l00056"></a>00056 data = boost::any(<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WString.html#17afc7c43b5b7a710047be4a2c639575">Wt::WString::fromUTF8</a>(s));
<a name="l00057"></a>00057 }
<a name="l00058"></a>00058
<a name="l00059"></a>00059 model-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractItemModel.html#70856db8c322be8c7f397a932165a943">setData</a>(dataRow, col, data);
<a name="l00060"></a>00060 }
<a name="l00061"></a>00061 }
<a name="l00062"></a>00062 }
<a name="l00063"></a>00063
<a name="l00064"></a>00064 ++csvRow;
<a name="l00065"></a>00065 }
<a name="l00066"></a>00066 }
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