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>From: Dave Santek <address@hidden> >Organization: SSEC >Keywords: 200502232213.j1NMDuv2029576 Time animation Hi Dave- >The two files have the same 11 forecast times. I'm using the Formula: >Simple difference a-b > >Then I select the 3-d grids to difference, using a single time [the same >time in each file]. When I do this for successive times, the isosurfaces >are all on a single frame. If I click the animate button, the times >change but nothing animates because they're all pasted into a single frame. Yes, this is a VisAD design. If there is one time for a data object, it acts like a base map and shows up on all times. We've discussed several possible solutions, but each is fraught with it's own issues. You could talk to Bill about it. ;-) >If I do the difference with 'all times' I get: > >http://www.ssec.wisc.edu/~daves/idv_example.mov > >with an isosurface value of 45. A value of 45 is good for the middle >images, but I want to use a smaller value for the early images and >larger for the later images. My current workaround is to use pairs or >triplets of times to set the isosurface value, and it works just fine! If that works for you and you don't mind doing it this way, then I guess my work is done. ;-) Doesn't seem like the ultimate solution for some reason. You might ask Tom W. for his thoughts on this. Don NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.