With the Thumbnail viewer, you can visualize raster-data layers in various ways. You can view images tiled across several spectral bands in a rectangular array. You can then display the images corresponding to several or all of the bands in the cube side by side.
The imagery displayed in the viewer is determined by what you have selected. That is, when you have an image selected on the Maps tab, thumbnails of a section of the image are created for each channel. The section used for the thumbnail is a 256-by-256-pixel area centered on the cursor in the image. When you have a file selected on the Files tab, thumbnails of the full extents of the image are created for each channel.
A new map and area are added when you select layers from the Thumbnail viewer. You can display your images in grayscale or RGB format.
While you can use the viewer with multispectral and hyperspectral data, only raster layers can be displayed.
For more information, see:
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