Time is always a special case in Ferret. I have only thought through the use of curvlinear data in spatial coordinates but I suppose there is no reason what you're doing shouldn't work, as you are always plotting in a 2-D plane. For the 3-argument fill command, check that the coordinates describing time are consistent. You might try making an example first with a simplified description of time, say just days since day 1. Ansley Manke Gustafson, William I wrote: Dear Ferreters, I am having trouble doing time height cross sections of 4D data using the curvilinear fill routine. If I fix the time I can successfully make a longitude height plot by typing cancel region/i/k set region/j=30/l=73 fill ugrd, x[g=qvapor]+0*qvapor, height where both ugrd and height have been previously regridded to the same grid as qvapor. But, if I do the equivalent for a time height plot by fixing x and y: cancel region/k/l set region/i=30/j=30/l=72:96 fill ugrd, t[gt=qvapor]+0*qvapor, height I get a plot with a bunch of triangles going across time with each triangle having colored stripes and everything else white. Any ideas on how to get this to work? If it is needed for the solution, the grid all the data is on is: GRID GDX5 name axis # pts start end WEST_EAST X 73 r 1 73 SOUTH_NORTH Y 73 r 1 73 BOTTOM_TOP Z 59 r 1 59 TIME1 TIME 121 r 28-AUG-2000 12:00 02-SEP-2000 12:00 Thanks, Bill _____________________________ William I. Gustafson Jr., Ph.D. Pacific Northwest National Laboratory P.O. Box 999, MSIN K9-30 Richland, WA 99352, USA Voice & Msg: (509)372-6110 FAX: (509)372-6168 http://www.pnl.gov/atmos_sciences |