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Hi Greg, re: > Thanks - I misremembered which was bigger but you're right, the pixel > size is smaller in the McIDAS remapping and that confirms my suspicions. Yup. re: > It's a bit disconcerting that the RES parameter is not very exact in this > case. I agree! re: > I'm wondering if I can multiply it by 1.3 to force the pixel size to > be what I want it to be? What do you think? I just tried it, and it seems to have worked: IMGREMAP EAST/CONUS.84 MYDATA/IMAGES.3000 PRO=MERC LATLON=39.25 105.0 RES=1.3 SIZE=925 1048 SSIZE=ALL BAND=1 ... IMGLIST MYDATA/IMAGES.3000 FORM=ALL Image file directory listing for:MYDATA/IMAGES Pos Satellite/ Date Time Center Res (km) Image_Size sensor Lat Lon Lat Lon --- ------------- ------------ -------- ---- ---- ----- ----- ------------ 3000 G-13 IMG 21 JUL 14202 20:15:00 39 105 Band: 1 0.63 um VIS Cloud and Surface Features 1.00 1.01 925 x 1048 proj: 0 created: 2014202 230618 memo: RT GVAR type:VISR cal type:BRIT offsets: data= 768 navigation= 256 calibration= 0 auxiliary= 0 doc length: 0 cal length: 0 lev length: 0 PREFIX= 0 valcod: 0 zcor: 0 avg-smp: N start yyddd: 2014202 start time:201519 start scan: 406 lcor: 5879 ecor: 9477 bytes per pixel: 1 ss:180 Resolution Factors (base=1): Line= 1.0 Element= 1.0 IMGLIST: done A visual comparison between the Terascan remapped image you sent earlier and this one from McIDAS shows that the latitude/longitude map lines are slightly different. A scaling of 1.29 results in displays that are pretty darn close. The ratio 1/0.77 is actually 1.2987; you may want to give it a try also. re: > We have a mapping tool preconfigured with a specific bounding box so it > would be nice to create both Terascan and McIDAS imagery with the exact > same bounds so we can easily switch between the two sources without having > to reconfigure the display each time. Give the scaling trick a try and let me know how the result compares with the Terascan remaps. re: > Thanks for your help, 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: MMD-610472 Department: Support McIDAS Priority: Normal Status: Closed