[vtkusers] Don't import a lot of data !!??

[Richard Layman]

Make sure the data extents are consistent with the data size.
Data size should be 769*769*456.

On 7/20/06, Glauco Silva <glauco.silva at cenpra.gov.br> wrote:
>
>  Hi,
> I'm trying to use vtkImageImport to import some data.
> If i import few data it's all right, but if i import a lot of data, an
> error of read memory occurs.
> Is There some problem to import a lot of data ?
> why does it import few data but don't import a lot of data ?
> Thanks
>
> platform : windows XP
> Dual Core AMD Opteron(tm)
> Processor 180
> 2.41Ghz, 2.00 GB of RAM
>
> language : Python 2.3 , VTK 5
>
>
>
> ##part of code when occur error :
>
> vtkImages = vtkImageImport()
> vtkImages.SetDataExtent(0,768,0,768,0,455)
> vtkImages.SetWholeExtent(0,768,0,768,0,455)
> vtkImages.SetDataScalarType(4)
> vtkImages.SetDataSpacing(0.38541666699999999, 0.38541666699999999, 1.5)
> vtkImages.SetDataOrigin((0,0,0))
> # image.data - > <read-write buffer for 0x03C68E50, ptr 0x26AD0020, size
> 536739840 at 0x00B3A3C0>
> # image.size = 268369920
> # image.itemsize = 2
> vtkImages.CopyImportVoidPointer(image.data, image.size*image.itemsize)
> vtkImages.GlobalWarningDisplayOff()
> vtkImages.Update()
> ##
>
>
>  ##part of code when don't occur error:
>
> vtkImages = vtkImageImport()
> vtkImages.SetDataExtent(0,768,0,768,0,25)
> vtkImages.SetWholeExtent(0,768,0,768,0,25)
> vtkImages.SetDataScalarType(4)
> vtkImages.SetDataSpacing(0.38541666699999999, 0.38541666699999999, 1.5)
> vtkImages.SetDataOrigin((0,0,0))
> # image.data - > <read-write buffer for 0x03C685C0, ptr 0x05FA0020, size
> 28311552 at 0x00D13A40>
> # image.size = 14155776
> # image.itemsize = 2
> vtkImages.CopyImportVoidPointer(image.data, image.size*image.itemsize)
> vtkImages.GlobalWarningDisplayOff()
> vtkImages.Update()
> ##
>
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