[SciPy-user] Questions about Line Integral Convolution tutorial

Bridgman, William T. William.T.Bridgman@nasa....
Mon Nov 24 14:53:53 CST 2008


As long as some notation of the issue is available in this forum, that  
should help a number of users wanting to work with it for now.

Is there any protocol for others updating the Wiki entry?  I've just  
joined Scipy but been a member of AstroPy since its inception - but I  
have yet to write or update a Wiki page.

I'm still getting some type of 'shifting' of my dataset after running  
LIC, so I need to examine the Cabral reference more closely.  I think  
I'm still missing something.


> 2008/11/24 Bridgman, William T. <William.T.Bridgman@nasa.gov>:
>> I had found the Cabral reference, as well as a few others that
>> described either different algorithms or described them in radically
>> different notation.
> I implemented my code based on the Cabral reference. Currently it does
> not quite do everything they recommend.
>> Transposing the texture solved my crashing problem.  That seems kind
>> of counter-intuitive.  Perhaps it could be noted in the docs  
>> somewhere
>> or changed in the interface?
> Looks like a bug. Indeed I only tested my code with square arrays. It
> wasn't really ready for release, but there was some interest, and I
> have no time at all to work on it just now.
> Anne
Dr. William T."Tom" Bridgman               Scientific Visualization  
Global Science & Technology, Inc.          NASA/Goddard Space Flight  
Email: William.T.Bridgman@nasa.gov         Code 610.3
Phone: 301-286-1346                        Greenbelt, MD 20771
FAX:   301-286-1634                        http://svs.gsfc.nasa.gov/

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