I guess you mean band "ratio". A very easy way to do it is withOpenEV, using Image -> Calculator.
H.2009/9/24 maven apache <[hidden email]>:
> Hi :> Can we use gdal to get the band radius of a image?> I have try to use gdalinfo ,it seems that the information do not contain the> band radius/> _______________________________________________
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>--Hernán De AngelisLinux user # 397217