Hello,
in the Mayavi documentation guide/ch04.html there is a python example
>>> # generate the data.
>>> from Numeric import *
>>> import scipy
>>> x = (arange(50.0)-25)/2.0
>>> y = (arange(50.0)-25)/2.0
>>> r = sqrt(x[:,NewAxis]**2+y**2)
>>> z = 5.0*scipy.special.j0(r) # Bessel function of order 0
>>> # now dump the data to a VTK file.
>>> import pyvtk
>>> # Flatten the 2D array data as per VTK's requirements.
>>> z1 = reshape(transpose(z), (-1,))
>>> point_data = pyvtk.PointData(pyvtk.Scalars(z1))
>>> grid = pyvtk.StructuredPoints((50,50, 1), (-12.5, -12.5, 0), (0.5, 0.5,1))
>>> data = pyvtk.VtkData(grid, point_data)
>>> data.tofile('/tmp/test.vtk')
the module name/classes/functions appears to have has changed slightly
#!/usr/bin/env python
#generate the data.
from Numeric import *
import scipy
x = (arange(50.0)-25)/2.0
y = (arange(50.0)-25)/2.0
r = sqrt(x[:,NewAxis]**2+y**2)
z = 5.0*scipy.special.j0(r) # Bessel function of order 0
# now dump the data to a VTK file.
from vtk import *
# Flatten the 2D array data as per VTK's requirements.
z1 = reshape(transpose(z), (-1,))
point_data = vtkPointData(vtkScalars(z1))
grid = vtkStructuredPoints((50,50, 1), (-12.5, -12.5, 0), (0.5, 0.5, 1))
data = vtkVtkData(grid, point_data)
data.tofile('/tmp/test.vtk')
However vtkScalars is now deprecated (actually does not exist in vtk4.4)
so the program does not run. The documentation I have found on web about
how to handle this change is for C++ and I cannot translate what needs to be
done in python. I have only just started to look at mayavi and vtk.
thanks
--
Tony Maher
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