Hi Eric,

This shows what I'm talking about:

--------------------
from pylab import *

delta = 0.025
x = arange(-3.0, 3.0, delta)
y = arange(-2.0, 2.0, delta)
X, Y = meshgrid(x, y)
Z1 = bivariate_normal(X, Y, 1.0, 1.0, 0.0, 0.0)
Z2 = bivariate_normal(X, Y, 1.5, 0.5, 1, 1)
# difference of Gaussians
Z = 10.0 * (Z2 - Z1)

contourf(X, Y, sin(Y)*cos(X),
         alpha=0.2)
hot()
contour(X, Y, Z, 6,
        linewidths=4,
        colors=('r', 'green', 'blue', (1,1,0), '#afeeee', '0.5'),
        alpha=0.4)
show()

-------------------

On Thursday 31 August 2006 13:50, Eric Firing wrote:
> Scott,
>
> Please send a minimal example that I can use as a test case.  This
> sounds vaguely familiar.
>
> Thanks.
>
> Eric
>
> Scott Ransom wrote:
> > Hi All,
> >
> > I'm using matplotlib (with agg backends) from recent svn:
> >
> > In [63]: matplotlib.__version__
> > Out[63]: '0.87.4'
> >
> > and I can't seem to get contour() or contourf() to utilize the
> > alpha keyword.  No matter what value I set, alpha=1.0 on the
> > output.  Alpha in general works fine, as the scatter_demo2.py
> > example gives very nicely alpha-channeled output.
> >
> > Any ideas?  Thanks a bunch,
> >
> > Scott

-- 
Scott M. Ransom            Address:  NRAO
Phone:  (434) 296-0320               520 Edgemont Rd.
email:  [EMAIL PROTECTED]             Charlottesville, VA 22903 USA
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