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Hi Donna- > OK this is nice but I have a problem doing an overlay and I > think this must be a bug. Let me give you the whole sequence > of what I am doing. > > 1) Get today's 12 UTC 40 km RUC from Unidata. > 2) Open display with transect and map > 3) Make transect panel active > 4) Plot color contours of wind speed in cross section > (So far, so good cross section appears in transect) > 5) Adjust vertical range in transect from 0-4000 m > 6) Windspeed contours adjust to 0-30 m/s > 7) Contour interval changed to 2 > 8) Ok, I want an overlay - true wind vectors in cross section display > 9) This will usually come up but vectors are too small > 10) I try to change size of vectors, IDV has runtime error and quits. Can you capture the error output and send it along? That will help me to track down the problem. Thanks. Don Murray Ticket Details =================== Ticket ID: UPY-185961 Department: Support IDV Priority: Normal Status: Open