ImageGear for C and C++ on Windows v19.2 - Updated
enumIGISISResolutionUnits
API Reference Guide > ISIS Component API Reference > ISIS Component Enumerations Reference > enumIGISISResolutionUnits

These are all the possible values for the IG_ISIS_TAG_RESUNIT tag.

Values:

IG_ISIS_RESUNIT_NONE No absolute unit of measurement.
IG_ISIS_RESUNIT_INCH Resolution is specified in dots per inch.
IG_ISIS_RESUNIT_CENTIMETER Resolution is specified in dots per centimeter.