[vtk-developers] Charts API: Color by LUT

[Marcus D. Hanwell]

Hi Eric,

Apologies for not getting back to you, I am busy preparing for a trip and getting some things finished up. I have some work getting ready for inclusion with 2D histograms, and they are colored by scalars. I was thinking about applying the same technique to scatter/line plots, but I am certainly interested in the approach you are using.

We have the color transfer function editor, and the approach I am using will tie in with that. I am not 100% clear on what you are doing, but would love to take a look. have a screenshot of my own on another system showing a 2D histogram colored by a scalar field. Do you want to push it to Gerrit at some point?

I have a backlog to get through, but would certainly like to get this functionality into the charts.

Marcus

On Nov 5, 2010, at 4:42 PM, Eric E. Monson wrote:

> Hey Marcus,
> 
> I'm making some progress with pretty basic functionality in the points plot for now. I'll probably try to get it working for parallel coordinates on Monday, and then run a patch by you to see if you think I'm on the right track.
> 
> Thanks,
> -Eric
> 
> <ScatterColorByArray_rev1.png>
> 
> On Nov 4, 2010, at 2:12 PM, Eric E. Monson wrote:
> 
>> Hey Marcus,
>> 
>> Back in August someone brought up the issue of coloring points in a plot (e.g. scatter) according to the values in another array. I've never done any OpenGL programming, but I think I see how it can be done efficiently. Before I start playing around with it, though, I wanted to check whether this is something you guys are already implementing for near-term deployment? (I'm going to need it soon for a project.)
>> 
>> Talk to you later,
>> -Eric
>> 
>> ------------------------------------------------------
>> Eric E Monson
>> Duke Visualization Technology Group
>> 

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