<map id="G" name="G"> <area shape="rect" id="node1" href="$class_qwt_raster_data.html" title="QwtRasterData defines an interface to any type of raster data." alt="" coords="7,5,116,35"/> <area shape="rect" id="node3" href="$class_qwt_matrix_raster_data.html" title="A class representing a matrix of values as raster data." alt="" coords="165,5,312,35"/> </map>