GetThresholdMapFile 589 magick/methods.h #define GetThresholdMapFile PrependMagickMethod(GetThresholdMapFile) GetThresholdMapFile 1150 magick/threshold.c map=GetThresholdMapFile(MinimalThresholdMap,"built-in",map_id,exception); GetThresholdMapFile 1157 magick/threshold.c map=GetThresholdMapFile((const char *) GetStringInfoDatum(option),