Hello everyone I want to convert the EVF polygons with the holes to ROIs in my pro file.here's the direction I would take: (1)Open and read the EVF file(s) using the functions ENVI_EVF_OPEN, ENVI_EVF_READ_RECORD, etc. (2)Convert the geographical coordinates to image coordinates using ENVI_CONVERT_FILE_COORDINATES. (3)Convert the EVF polygons to ROIs using ENVI_CREATE_ROI and ENVI_DEFINE_ROI. But the result is not the same as ones in ENVI using 'enport layers to roi'. Thanks for your help.