So I downloaded the PNM tool box from the file exchange, which included rasread. I'm trying to read in and display sun raster files but when I try to use the program, i get this error message: "invalid bitdepth: 16". Is there a way to convert the sun raster file to not be uint 16 or is there a way to modify the program?
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I am not able to find any documentation that supports the possibility of 16 bits per pixel for Sun raster files. The values I can find documented are 1, 8, 24, and 32. See http://www.fileformat.info/format/sunraster/egff.htm . Note that this is the total number of bits per pixel including all channels.