XYPlotActor ARHHHG!

[Steve Guerrero]

Correction, it doesn't work.  Anybody know how to do what I mention below?

Steve Guerrero wrote:

> Doh!
>
> Please disregard this question, I found the problem.
>
> The approach below does seem to work, unfortunately, it looks like the x-axis
> labels don't get updated (either that, or they are supposed to be manually set).
>
> -Steve Guerrero
>
> Steve Guerrero wrote:
>
> > Hello,
> >
> > I am new to VTK so please forgive me if this is obvious.
> >
> > I am trying to use the XYPlotActor object to create a simply plot of one
> > variable against another.
> >
> > For example:
> > x = [0, 1.5, 6.2, 10.2]
> > y = [8, 9.3, 10.9, 27]
> >
> > I would like to plot y as a function of x,
> >
> > I tried the approach below but it does not seem to work.  My approach
> > was to create a 1 dimensional rectilinear grid data set and set the
> > Xcoordinates to the vector given above.  The Y data looks fine.
> > Unfortunately, the X axis seems to be the point IDs as opposed to the
> > values in the vector above.   Is this the wrong approach?  Any help
> > would be appreciated.
> >
> > Thanks,
> > -Steve Guerrero
> >
> > int dataSize = 4;
> > float x[4] = { 0, 1.5, 6.2, 10.2 };
> > float y[4] = {8, 9.3, 10.9, 27};
> > vtkRectilinearGrid *curve1 = vtkRectilinearGrid::New();
> >  curve1->SetDimensions(dataSize,1,1);
> >  vtkFloatScalars *dataValues = vtkFloatScalars::New();
> >  vtkFloatScalars *xCoords = vtkFloatScalars::New();
> >
> > int w;
> >  for(w=0; w<dataSize; w++)
> >  {
> >   dataValues->InsertScalar(w, y[w]);
> >   xCoords->InsertScalar(w, x[w]);
> >  }
> >
> >  curve1->SetXCoordinates(xCoords);
> >  curve1->GetPointData()->SetScalars(dataValues);
> >
> >  vtkXYPlotActor *theXYPlot = vtkXYPlotActor::New();
> >  theXYPlot->SetXValuesToArcLength();
> >  theXYPlot->AddInput(curve1);
> >
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