Get/set raster band color interpretation #100
Description
In GDAL's data model, bands may have a color interpretation. The default is "undefined". The value can be set or get by using GDALSetRasterColorInterpretation or GDALGetRasterColorInterpretation.
/*! Types of color interpretation for raster bands. */
typedef enum
{
GCI_Undefined=0,
/*! Greyscale */ GCI_GrayIndex=1,
/*! Paletted (see associated color table) */ GCI_PaletteIndex=2,
/*! Red band of RGBA image */ GCI_RedBand=3,
/*! Green band of RGBA image */ GCI_GreenBand=4,
/*! Blue band of RGBA image */ GCI_BlueBand=5,
/*! Alpha (0=transparent, 255=opaque) */ GCI_AlphaBand=6,
/*! Hue band of HLS image */ GCI_HueBand=7,
/*! Saturation band of HLS image */ GCI_SaturationBand=8,
/*! Lightness band of HLS image */ GCI_LightnessBand=9,
/*! Cyan band of CMYK image */ GCI_CyanBand=10,
/*! Magenta band of CMYK image */ GCI_MagentaBand=11,
/*! Yellow band of CMYK image */ GCI_YellowBand=12,
/*! Black band of CMLY image */ GCI_BlackBand=13
} GDALColorInterp;
One way to implement this would be to add a colorinterp(bidx) method to the reader class and a set_colorinterp(bidx, value) method to the updater class. As with the existing tags(bidx) method.
cc @kapadia