Application - Remote Sensing

This case study shows the application of XmdvTool to remotely sensed data. 5 distinct channels (Spot, magnetics, 3 bands of radiometrics) are combined for a particular region in Western Australia. The third radiometrics band, which highlights Uranium, is the focus of exploration. The user brushes over the parallel coordinates display on the high Uranium region to identify 2 distinct "signatures", one with high potassium and low magnetics, and the other with moderate levels of each. The glyph display, because we are dealing with a square geographic region, places glyphs based on spatial positions. Thus we can see the geographic regions (in red) which correspond to high uranium. Note the shading which manifests itself with small glyphs - changes in shading correspond to changes in one or more of the dimensions. By focusing the brush on high potassium and returning to the glyph display, we localize the regions with this characteristic signature.