>From: Edward Hindman <address@hidden> >Organization: CCNY >Keywords: 200104271758.f3RHwBL11872 McIDAS Ward, >We are making a loop of Global Mollweide images using the ALOOP command. >It will not let us load more than five frames: > >ALOOP 2350 2354 1 5 This command works >ALOOP 2350 2355 1 6 This command produces what the first command produced > >What am I doing wrong? Nothing obvious. Since ALOOP sorts a list of images by time but does NOT attempt to eliminate duplicates, I have to believe that there are only 5 images to load, or there are only 5 frames in your session. Are you sure that you McIDAS session has more than 5 frames? >By the way, the files are in Cirrus in the /home/wxnut/mcidas/data/ >directory AREA2350 to AREA2357. I tried logging onto cirrus as 'mcidas', but the /home/wxnut/mcidas/data directory is not readable by 'mcidas', so I can't look at the files. The reason for this is the permissions on /home/wxnut: address@hidden workdata]$ ls -alt /home total 28 drwx------ 6 wxnut mcidas 4096 Apr 27 11:38 wxnut If you could give me the 'wxnut' login or make /home/wxnut (and /home/wxnut/mcidas and /home/wxnut/mcidas/data) readable by 'mcidas' I could take a quick look at the files to see if there is anything obviously wrong. Again, the ALOOP command you listed above should work fine. >Have you been able to "chat" with the SSEC about our IMGCOPY problem with >the Mollweide images discussed in your 17 Apr reply to my message? No, not yet, but I think I understand why one can't do the copy. A restatement of what was going on is: o you want to copy a portion of a Mollweide global IR image into an new image with the same projection and blow it up by a factor of two o since the resolution in the image is set to 1 (an artifact of an IMGREMAP), IMGCOPY will not do the copy The reason that IMGCOPY will not do the copy is that the resulting resolution would have to be 0.5 ( resolution of 1 / blow-up of two). The McIDAS AREA format only allows for integral resolutions, so this is not allowed. What you are really after, however, is the creation of an image centered on a certain point but blown up. You can do this using the IMGREMAP command. IMGREMAP RTIMAGES/MOLL-IR MYDATA/IMAGES.1234 LATLON=30 -92 PRO=MOLL RES=15 IMGDISP MYDATA/IMAGES.1234 EU=IMAGE REFRESH='EG;MAP SAT' The orignal resolution of the image is something like 29. I chose 15 since this is will result in a blow-up of about a factor of two. You can play with the RES= keyword and "zoom in" as much or as little as you want. For instance, compare: IMGREMAP RTIMAGES/MOLL-IR MYDATA/IMAGES.1235 LATLON=30 -92 PRO=MOLL RES=8 IMGDISP MYDATA/IMAGES.1235 EU=IMAGE REFRESH='EG;MAP SAT' You can use the SIZE= keyword on IMGREMAP to adjust how much of the original image gets remapped into the blown-up copy. I think that what we _really_ need to do for you is find a source of higher resolution global composite images that you can use for your investigations over Nepal. I know that the images that the Mollweide composites are created from are higher resolution and are in a rectilinear projection. I just blasted off a note to SSEC inquiring about this. >Sincerely, I hope that the IMGREMAP examples above get you going on your project. Tom
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