<map id="G" name="G">
<area shape="rect" id="node7" href="$class_qwt_plot_spectrogram.html" title="A plot item, which displays a spectrogram." alt="" coords="17,229,156,256"/>
<area shape="rect" id="node2" href="$class_qwt_plot_item.html" title="Base class for items on the plot canvas." alt="" coords="41,80,132,107"/>
<area shape="rect" id="node4" href="$class_qwt_legend_item_manager.html" title="Abstract API to bind plot items to the legend." alt="" coords="5,5,168,32"/>
</map>
