This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
Hi Randy, I apologize for not responding to your email earlier. I started to reply, but got pulled off onto other things and forgot to pick up the thread. re: > I am having trouble producing a global mosaic of the GEO sats. > using imgremap i remapped each full disk image into a common projection > (PRO-RECT) > for example, IMGREMAP GOES12 GLOB.1 PRO=RECT RES=16 SIZE=1100 1224 > each of the five remapped full disk images are now remapped and all > have the same size 1100 1224 over their respective regions of the world OK. This should be straightforward enough... > i then try using IMGOPER GLOB.1 GLOB.2 GLOB.3 GLOB.4 GLOB.5 OUT.1 FORM=CMIN > ZERO=DATA SIZE=ALL > > it runs but i dont get a global mosaic instead i get the enclosed. > any ideas? Comments: - (minor) the ZERO= keyword is archaic -- it is no longer documented in the online help or User's Guide for IMGOPER. Even though the code still has provision for ZERO=, I would use the MISS= keyword instead so that future changes to IMGOPER would not make your procedure invalid (e.g., MISS=NONE) - (minor) my gut reaction is that the function (FORM=) should be CMAX, not CMIN but that is TBD - (major) the reason that your composite is not coming out like you want is due to the way you are creating global views of the various pieces. What you need to do is specify the LATLON= for the destination image in the original IMGREMAP invocations so that the center position of each piece is the same. Example: specify the center point of the eventual composite as 0N, 0W: IMGREMAP GOES12 GLOB.1 PRO=RECT RES=16 SIZE=1100 1224 LATLON=0 0 ... Do the same sort of thing for each piece. When you do the image combination using IMGOPER, you will get the global coverage you are after. > thanks, No worries. Cheers, Tom **************************************************************************** Unidata User Support UCAR Unidata Program (303) 497-8642 P.O. Box 3000 address@hidden Boulder, CO 80307 ---------------------------------------------------------------------------- Unidata HomePage http://www.unidata.ucar.edu **************************************************************************** Ticket Details =================== Ticket ID: IMU-985792 Department: Support McIDAS Priority: Normal Status: Closed