spherical plot



Hi all,

I want to plot radiation pattern.
I tried to plot it with geomview but it seems that it does not work (my 
data are not stored in a grid, but in (theta,phi)).

So I want to plot it through maxima.

I tried to plot my data in spherical coordinates after reading the doc 
but I don't understand the syntax used.

How can I use make_transform to plot in spherical coordinates ?

After this, how can I plot my data stored in (theta,phi) in a ASCII file ?

Thanks in advance.

-- 
Fred.