Hi! We have a shape file with a large number of polygons, and we'd like to use this file to calculate statistics from images. The data are all georeferenced using the same projections etc. To do this, I have converted the .shp files into evf vectors, and these then into ROIs. However, while all the polygons are translated into different ROIs. However, the name of each ROI is the same (namely, the name of the .evf file), so when I calculate statistics, there is no way to know which polygon is which. Ideally, we would like to have statistics calculated and output with a reference to the value of one (or more of the attributes that are associated with that polygon). There's a program called evf_to_rois that appears to do this, but it doesn't give any meaningful output. Any ideas, welcomed :) Jose