Good morning Last weeks i face a big problem and till now i haven't sove it yet. I am working on Landsat imagery and i start to create ROIS as shapefile in Arcgis 10. I design them and when i try to open them as ROIS (convert shp to evf and after as ROI) i see that on the same image i work in arcgis 10 to design the roi's, the polygon data are not in the same position, but have a shift effect of 2-3 pixels below. The strange is that in ENVI EX or in ENVI Zoom the data are on the correct position. in ENVI EX i can use them as training sites but in ENVI Zoom i recieve a white image after every classification method. What could be the solution of this problem ? Thanks in advace