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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Hi Evan,
Goal: Generate a 960x720 satellite image centered over the U.S. which exactly matches an existing 960x720 image of the US. This image needs to be automatically generated every ~15 minutes as new satellite data comes in.
Just curious why the hand editing of the projection file? I know our projection editor needs work. What could we do in the IDV to make this process easier? Enable the exact setting of the bounding box values? Any ideas?STEP1: Create custom Projection named "custom_us" Type: Stereographic, False Easting: 0, False Northing: 0, Scale: 1, Tangent lat: 90.0, Tangent lon: -96.0STEP2: Move the bounding box of the projection by editing ".undata/idv/DefaultIdv/projections.xml" <after hours of trial and error>
Also - is there anything we could add to the ISL to have made this process easier?
For example, we just added last week a viewpoint tag: http://www.unidata.ucar.edu/software/idv/release/nightly/docs/userguide/isl/DataAndDisplays.html#viewpoint that allows for scripted positioning of the viewpoint. We also have a center tag: http://www.unidata.ucar.edu/software/idv/release/nightly/docs/userguide/isl/DataAndDisplays.html#center that allows for positioning. We can also do clipping of the image: http://www.unidata.ucar.edu/software/idv/release/nightly/docs/userguide/isl/ImagesAndMovies.html#clip [...]
STEP11: Run isl script to generate gif image. Result: creates an image NOT 960 x 720 pixels, instead it creates an image which is the size of the display panel (1164 x 1002 pixels) and is clearly distorted from the view I need.
When you run isl in onscreen mode the view size is whatever size the gui layout of the window ends up with. What you should do is set offscreen=true and you can set the size of the view in the bundle tag with the width/height attributes:
http://www.unidata.ucar.edu/software/idv/docs/userguide/isl/DataAndDisplays.html -Jeff
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