<map id="QwtPlotSpectrogram" name="QwtPlotSpectrogram">
<area shape="rect" id="node2" href="$class_qwt_plot_raster_item.html" title="A class, which displays raster data." alt="" coords="11,80,137,107"/>
<area shape="rect" id="node4" href="$class_qwt_plot_item.html" title="Base class for items on the plot canvas." alt="" coords="29,5,120,32"/>
</map>
