Hi Rod, re: unexpected snags in calibrating effective radius images > Ok when the failure is fixed or if you found out the problem, would > you notify me? I figured out what was going on... After taking a closer look at the header of one of the 27 April 2011 effective radius image, I saw that, even though the image was identified as a PRD (1-based AREA header word 52), it still had a header word that was indicating that its calibration should be GVAR (1-based AREA header word 57). This is undoubtedly a remnant of the process Dan used to create the effective radius images. Not to worry, the header word is easily changed using IMGCHA. After finding the thing that was tripping me up, I wrote a script (CalibrateEffrad.sh which is attached) that modifies all effective radius images in a directory by: - linking an effective radius image to $MCDATA/AREA2000 - running IMGCHA to change the original source type of the image from GVAR to 'PRD ': IMGCHA LOC/AREAS.2000 OTYPE=PRD - running PRDUTIL to add calibration to the image This time, I decided that one significant decimal place for the ERAD values was sufficient (I previously was saving 4). The PRDUTIL invocation run was: PRDUTIL ADD LOC/AREAS.2000 1 RICE -1095 515 0 255 ERAD 10 -2139062144 You should extract the script attachment and write it into the /home/rod/mcidas/bin directory and change its mode so that it is executable: cd /home/rod/mcidas/bin -- copy CalibrateEffrad.sh to this directory chmod +x CalibrateEffrad.sh After copying CalibrateEffrad.sh to /home/rod/mcidas/bin, you can use the script to calibrate all of the effective radius images in your $MCDATA/archive/27apr2011 directory as follows: <as the user 'rod' from the Linux command line> cd $MCDATA CalibrateEffrad.sh $MCDATA/archive/27apr2011 Once the images are calibrated, you can use IMGPROBE to list out effective radius (ERAD) values; contour them, etc. Here what I did to show the steps to run in a McIDAS-X session: SF 1 ERASE F IMGDISP G13/ERAD27APR11 TIME=20:25 LAT=34:45 87:49 EU=CLW3 SF=YES MAG=3 MAP LALO COUNTY=ALL STATE=MS AL GA MCOL=8 MAP FILE=OUTVHPOL MCOL=1 IMGPROBE CONT BOX RICE SIZE=500 700 CINT=5 CLIM=-150 0 COL=7 DASH=YES LHGT=0 LAT=34:45 87:49 MODE=N IMGPROBE CONT BOX RICE SIZE=500 700 CINT=5 CLIM=0 60 COL=6 DASH=NO LHGT=0 LAT=34:45 87:49 MODE=N I saved the display as a GIF file, rad_Contours_20110427_2025.gif, and attached it to this reply. Comments: - the frame size in my McIDAS-X session is 950 BY 1225 Because of my frame size, I chose to display the 20:25 effective radius image blown-up by a factor of 3 (MAG=3 on IMGDISP command). This makes things easier for me to see. - I ran IMGPROBE twice to display the erad values below 0 in one dashed color and the values of erad greater than 0 in a different solid color Recommendation: It would be good if you could get hold of an external monitor that has greater than 1024x600 resolution and hook it up to your netbook. My netbook (a 3 year old Acer Aspire One) drives my 1920x1200 monitor very nicely. My thinking is that with a larger output area afforded by an external monitor, you could be McIDAS sessions that have much larger frames, and this would allow you to see things more easily. 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: RDQ-637778 Department: Support McIDAS Priority: Normal Status: Closed
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CalibrateEffrad.sh
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Erad_Contours_20110427_2025.gif
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