[Paraview-developers] Parallel Coordinates as a filter?

[Hal Canary]

Extract selection does exactly what I want.  I did not realize that that 
worked with parallel coordinates; thanks!


While looking into the vtkChartParallelCoordinates and 
vtkPlotParallelCoordinates source, I found that it seems that the 
selection mechanism does not save the actual threshold values that were 
used to update the selection.  Because of this, the user can only select 
smaller and smaller selections or reset the selection altogether.  This 
seems like a sub-optimal workflow.  Has anyone thought of changing this? 
  Is anyone already working on overhauling parallel coordinates in ParaView?



On 08/30/2011 11:05 AM, David E DeMarle wrote:
> Does thresholding or extract selection not work for you?
>
> In particular the selection filters' have a preserve topology control
> that makes them simply add an inside/outside flag array which can
> later be used as the basis for thresholding.
>
> David E DeMarle
>
>
>
> On Tue, Aug 30, 2011 at 10:00 AM, Hal Canary<hal at cs.unc.edu>  wrote:
>> Hello, Everyone!
>>
>> In ParaView's parallel coordinates view, one has the ability
>> to select a subset of the points to highlight in red.  Is may
>> be useful to use this visualization as a filter: to add an
>> additional data array indicating whether a point is selected
>> or not.
>>
>> I don't see a straightforward way to do this, given how VTK
>> is not set up to think of vtkChartParallelCoordinates as a
>> filter.  Any thoughts?


-- 
Hal Canary
http://cs.unc.edu/~hal/