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<area shape="rect" href="$class_qwt_plot_item.html" title="Base class for items on the plot canvas." alt="" coords="216,132,309,159"/>
<area shape="rect" href="$class_qwt_plot_curve.html" title="A plot item, that represents a series of points." alt="" coords="372,5,473,32"/>
<area shape="rect" href="$class_qwt_plot_grid.html" title="A class which draws a coordinate grid." alt="" coords="377,56,468,83"/>
<area shape="rect" href="$class_qwt_plot_marker.html" title="A class for drawing markers." alt="" coords="369,107,476,133"/>
<area shape="rect" href="$class_qwt_plot_raster_item.html" title="A class, which displays raster data." alt="" coords="357,157,488,184"/>
<area shape="rect" href="$class_qwt_plot_scale_item.html" title="A class which draws a scale inside the plot canvas." alt="" coords="360,208,485,235"/>
<area shape="rect" href="$class_qwt_plot_svg_item.html" title="A plot item, which displays data in Scalable Vector Graphics (SVG) format." alt="" coords="365,259,480,285"/>
<area shape="rect" href="$class_qwt_plot_spectrogram.html" title="A plot item, which displays a spectrogram." alt="" coords="536,157,677,184"/>
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