Re: contourf

[Jonathan Stickel]

Carine Simon wrote:
> Hi all,
>
> I don't understand how to include colours in a contourf plot. Is it possible ?

You need to change the colormap.  BTW, it seems that imagemagick is used 
for contourf output, so your result will be a matrix graphic.

> Another thing is: is there a way to do as Matlab i.e. precise the axes for
> contourf. For example doing something like contourf(xaxis, yaxis, matrix)

You can use "contour" this way, whose output is gnuplot.

> A last point is that sometimes when I use contourf I get some errors like: 
> error: expecting integer index, found 2.291667
> error: evaluating argument list element number 1
> error: called from `contourf' in file
> `/usr/share/octave/2.1.71/site/m/octave-forge/plot/contourf.m'
>
> then I juste type the same contourf command and everything works.

I get this same behavior.  I encourage to try Octaviz 
(octaviz.sourceforge.net).  There exists a contour function in Octaviz 
which gives nice output.  A "contourf" function (filled contour) doesn't 
exist yet, but if you get Octaviz installed and express interest, I can 
make one.

Regards,
Jonathan



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