[vtkusers] How to communicate between vtkPiecewiseFunctionand vtkDataArray

[Yi-Yu Chou]

Dear Amy,

Thanks for your replying, but I encountered a weired problem....
I can't use GetDataPointer method !!!!!
In my code, I set :

r_fun = vtkPiecewiseFunction()
r_fun.AddPoint(0, 0)
r_fun.AddPoint(255, 1)
r_pt = r_fun.GetDataPointer()

When I ran it under vtk4.2 with python 2.3, it appeared an error message :
r_fun.GetDataPointer()
AttributeError: GetDataPointer

Do you now what's going wrong ?????



>From: Amy Henderson <amy.henderson at kitware.com>
>To: vtkusers at vtk.org
>Subject: Re: [vtkusers] How to communicate between vtkPiecewiseFunctionand 
vtkDataArray
>Date: Wed, 11 Aug 2004 15:27:12 -0400
>
>Hi Yi-Yu,
>
>You can get the underlying double array from the 
>vtkPiecewiseFunction using the GetDataPointer method. You can pass 
>this array to a vtkDoubleArray using its SetArray method. (You will 
>also need to fill in the size of the array and whether 
>vtkDoubleArray is responsible for deleting the double array you 
>passed in.)
>
>- Amy
>
>At 03:21 PM 8/11/2004, Yi-Yu Chou wrote:
>>Dear vtk users,
>>
>>Is it possible to use vtkPiecewiseFunctions to build a vtkDataArray 
>>?
>>Please give me some ideas.
>>Thanks a lot !!!
>>
>>Yi-Yu
>>
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>
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