[Paraview] ParaviewWeb : Repeated calls to GetLookupTableForArray do not change the RGBpoints array

[Utkarsh Ayachit]

How are you loading the default.xml? Do the best of my knowledge, ParaView
Python API has no call to setup LUTs from XML.

Utkarsh

On Wed, May 18, 2011 at 8:45 PM, Rajvikram Singh <rajvikrams at yahoo.com>wrote:

> Hi
>    I've a case where the users can load .xml files saved from the
> Paraview's 'Edit Color Map' widget and apply the color maps (containing
> R,G,B and Opacity values) to volume rendering.
>
> When I start the application a call is made is load a "default.xml" file
> and then do a :
>
> Lut = pv.GetLookupTableForArray({arrayname : "ImageFile", num_components :
> 1, HSVWrap : 0, NanColor : nanColor, RGBPoints : rgbPoints, ColorSpace :
> colorSpace});
>
> Sof = pv.CreatePiecewiseFunction( {Points: sofPoints});
>
> The variables nanColor, rgbPoints, sofPoints etc are populated by the XML
> file data. Then the Lookuptable is applied to the DisplayProperties for
> volume rendering. This part works well.
>
> However when the user changes the .xml color map file from a drop down, the
> same code is called again and this time it does something funny. It seems to
> retain the previous RGBPoints information and adds the new color map to it.
> So the two lookup tables look like they are merged. Is this expected ?
>
> Is there a way to reset the lookup table ? I did not see any obvious call
> within simple.py or pwsimple.py.
>
> Thanks
> Raj
>
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