Multispectral Analysis

This sample shows two multi-spectral rasters of Las Vegas on top of each-other. The two datasets are from 2000 and 2003, and the sample allows you to instantly compare the two using a slider.

The raster data is served over WMS by a LuciadFusion server. The data is not pre-processed. The selected bands are sent to the WMS server using SLD.

Usage

• Use band selection to see an individual band in grey-scale.
• Use combinations to see interesting combinations of bands in color. Explanation of the selected combination is displayed on the right.
• Use the cross-fade slider to instantly see the difference between the data from 2000 and 2003.
• Select the blue pins: each show a balloon with something interesting at that location.

Details

The band selection is passed to the WMS server using the SLD_BODY parameter of the WMS request. It contains an SE <RasterSymbolizer> tag with SE <ChannelSelection> .

See WMSTileSetModel . sldBody and WMSImageModel . sldBody .

The cross-fade slider makes use of the RasterTileSetLayer . rasterStyle functionality.