Re: [opendx-users] mesh coloring

[Chris Pelkie]

It's not clear what algorithm you used to determine the 'color' (or 'value') at each node, but however you do it, you simply need to generate a 'data' component with 3 values, like 1, 2, and 3 and assign one value to each position in the mesh. Then make the 'data' component 'dep' 'positions', which means that the data values occur in the same order and have the same number of entries as the positions array.

After loading the data into DX, use Colormap's Generate Waveforms feature to create a 2-step (3 color) map and apply this to the 2nd input of the Color module into which you fed the data field into the first input.


On Wednesday, Apr 30, 2003, at 23:38 US/Eastern, Krasi wrote:

Hi all,

I am having my mesh data (positions and connections) written in native (dx) file format and I need to color different parts of my mesh in three different colors. I know exactly the relative numbers of nodes (respectively elements) for these colors and was trying to find a way to produce an image, unfortunately without any success until now. Could someone point me to the right direction, at this stage I am feeling completely lost.

Any help will be greatly appreciated!
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Krasimira T Tsaneva-Atanasova
PhD Student
Department of Mathematics Fax: +64 9 3737457 The University of Auckland Phone: +64 9 373 7599 (extn 88533)
Private Bag 92019
Auckland New Zealand

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Chris Pelkie
Scientific Visualization Producer
622 Rhodes Hall, Cornell Theory Center
Ithaca, NY 14853