At the suggestion of Anne in the comments of a previous posting about line-integral convolution (LIC) algorithm for vector field visualization, I tried pink noise as the input texture map. I think this looks pretty good compared to using white noise or smoothed white noise, but I’m still looking for better ways to show the magnitude and which direction along a flow line the field is really pointing.
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October 31st, 2008 at 1:00 pm
David Larson has some ideas about plotting both orientation and magnitude in his implementation of LIC for the Healpix package – for plotting of Stokes I, Q and U from the cosmic microwave background and galactic emission:
http://www.astro.princeton.edu/~fraisse/workshop/larson.pdf
October 31st, 2008 at 1:08 pm
Thanks, I will take a look at it!
May 9th, 2011 at 2:37 am
can you mail me a soure code of LIC with IDL?thank you very much.
May 9th, 2011 at 8:57 am
See this article for source code.