Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
Sure. >From the JPythonMethods collection of routines (part of the VisAD Jython library...see http://www.ssec.wisc.edu/visad-docs/javadoc/visad/python/JPythonMethods.html) 1. make a grid of "area" using a = createAreaField(f) this computes the area around each grid point for your original data field, f. 2. from your original grid, create a list of points that lie within the contour, perhaps using p = findWithinRange(f, min, max) this returns an array of indecies of the points that are within the range (min:max) 3. use computeSum(a, p) to compute the sum of the "area" values that meet the criteria in #2 You'll have to be careful to use 2D data, so "slice2D()" might be needed on your original data field. Hope that gets you started.... tom On Mon, Sep 28, 2015 at 1:11 PM, Alexa Van Eaton <alexa.vaneaton@xxxxxxxxx> wrote: > Hello IDV users, > > Has anyone explored calculating the area of a 2-D contour in IDV. There was > a suggestion that it would be theoretically possible to apply a maskGrid > formula in the IDV above a certain threshold, then calculate the area > inside the closed curve... > > All the best > > Alexa > _______________________________________________ > idvusers mailing list > idvusers@xxxxxxxxxxxxxxxx > For list information, to unsubscribe, visit: > http://www.unidata.ucar.edu/mailing_lists/ -- Tom Whittaker Researcher-Emeritus Honorary Fellow Space Science and Engineering Center University of Wisconsin-Madison Madison, WI USA
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