[vtkusers] 'live' 2D plot : feasible ?

[Gerrick Bivins]

Hi Guillaume,
I've successfully (for the most part) used XYPlot similar to the the way
you've described. I use a spline widget to update a the chart while probing
a 3d a dataset. The hard part is making sure the spline probe output stays
synced with the xyplot. This involved setting up the callbacks for the
widget so that any interaction with it constantly updated the filter. Also I
had to make sure the probe output had enough "valid points" to display a
sensible chart. This issue dealt mainly with my dataset being a vtkComposite
dataset so if your data is a vtkDataSet (or subclass of) then you should be
good to go.

Gerrick


 


On 7/16/09 8:57 AM, "guillaume ranquet" <granquet at wyplay.com> wrote:

> Hi list.
> I've been trying to find out if vtk could be used as a live 2D plotting
> tool (plot as the data comes in)?
> I'm working with Python, I stumbled upon
> Examples/Annotation/Python/xyPlot.py which is a good start for my goal.
> But I can't figure out how to animate a 2D plot nor if it's a good idea
> (maybe I'm the only one around being silly enough to use VTK for that
> kind of plotting)
> 
> and second question: is there a Python Documentation? I'm a bit lost
> with the Cpp doxygen, trying to find out what is mapped to what :S
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