[vtkusers] Three Questions

[Chris Hood]

I may have asked all these questions before, but I still haven't solve the 
problems. Can someone help me with them? Thanks.

Is it possible to click the mouse on the render window and have it return a 
point? (Clicking on a sphere would give the xyz coordinate of where the 
sphere was clicked.)

How can I access the data a point in a dataset (specifically a structured 
grid)? I want to enter a coordinate and the name of the variable and have 
it return that scalar or vector. If it's not possible now, it's a good 
feature to add to all the datasets. A function like dataset.getFloat(x, y, 
z, scalarname) would be simple to use.

How do you convert a xml ascii format vtk file with multiple pointdata sets 
(both scalars and vectors) to binary without losing the all but one of them?

____________________________________
Chris Hood
Graduate Student Research Assistant
University of Colorado, Boulder
Space Environment Center - NOAA