[vtkusers] array of data --> png image (in Python)?

[David Gobbi]

It is pretty easy to do this with vtkImageImport:

importer.SetImportVoidPointer(python_string, 1)
importer.SetDataExtent(0, width-1, 0, height-1, 0, 0)
importer.SetDataScalarTypeToUnsignedChar()

reader.SetInputConnection(importer.GetOutputPort())
etc,

The trick is creating a "python_string" that contains the data, I
think that numeric has an array method called "tostring()" for doing
it.

   David


On Mon, Jan 11, 2010 at 12:17 PM, Dominik Szczerba <dominik at itis.ethz.ch> wrote:
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> If you are using numpy then matplotlib will do it in one line.
> With VTK it is also possible, but the way is longer. Create
> vtkImageData, set the point data to your data, preferably using vtk
> numpy support, else it gets too slow. Then save to png with a PNG writer.
>
> Dominik
>
> Randy Heiland wrote:
>> Can someone tell me how I might generate/save a png image, given an array of data - in Python?  Any examples that I've overlooked?
>>
>> thanks, Randy (please keep me cc'd on reply)
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