[MayaVi-users] axis scaling in surface plot

[gerard m. <ger...@gm...>]

Hi,

I am trying to plot a surface using the enthought.mayavi.mlab module.

My problem is that my data along the x-axis and y-axis are not of the same
order, and so the resulting surface is completely shrinked... I do have to
renormalize the data to obtain a surface that's really looks like one...

for instance, if I do:

from scipy import *
from enthought.mayavi import mlab

x, y = mgrid[-100:100:1, -1:1:0.01]
z = random.rand(*x.shape)
s = mlab.surf(x, y, z)  #the surface displayed is completely shrinked on the
y axis and z axis ( =1/100 of the x values)
mlab.show()

How can I control the scaling without renormalizing the inputs x, y, z ?

Similarly, how can I limit the values displayed on the z-axis ? for example
it could be, I have a couple of points with irrealisticly big values, and do
not want them to appear in the graph... with the code above, If I do:

z[2, 13] = 100000
mlab.surf(x,y,z)

will display this 100000 point and corrupt the surface display... say I just
want to ignore it and keep values between [0, 1] ? I have tried to play
around with the mlab.axes() but it does help. Is there any mean ? I do not
want to filter my input data as it is too big.

Thanks a lot.

Regards,
Gérard