> Jun/Jeff- > > The normal derived parameter for vectors if "flowvectors" which combines u & > v. Thanks Don. I just noticed that as well. Attached is an example isl script that displays flowvectors and shows some examples of properties that can be set. Jun - you say that your datasource is not changing. Can you send your script to us. Also, can you run with tracing on: idv flow.isl -trace -traceonly "GeoGridDataSource.*" This should show a line like: GeoGridDataSource: opening file dods://motherlode.ucar.edu:-1/th... for each file that is opened. Also, try putting a <pause seconds="10"> in your loop so you can see what is happening. -Jeff Ticket Details =================== Ticket ID: HSY-189050 Department: Support IDV Priority: Normal Status: Open
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flow.isl
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