Hi there,
I would truly truly be grateful if someone could help me with this. It has
caused me much strife.
I would like to change the opacity scaling to some default piecewise
function when I first run my code -- without messing with the GUI or the
pop up window: volume.edit_traits()
I've tried many related ways, but for sanity I'll stick to a prototypical
example:
#########
volume=mlab.pipeline.volume(mlab.pipeline.scalar_field(sIzi,sIxi,sIyi,I))
from tvtk.util.ctf import PiecewiseFunction
otf = PiecewiseFunction()
otf.add_point(0.0,0.0)
#otf.add_point(0.25,0.0)
otf.add_point(0.35,0.15)
otf.add_point(1.0,.25)
volume.volume_property.set_scalar_opacity(otf)
#########
This code seems to edit the opacity, but it acts as if I had typed in
0.0025 (or maybe 0.025?) and 0.0035 instead of 0.35. For clarity, I would
like slope of the opacity function to change at the 25% and 35% percentiles.
Thanks,
Chris
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