Patch to sombrero.m

[John W. Eaton]

On 12-Oct-2006, Quentin Spencer wrote:

| I've been experimenting with modifications to imagesc and surf to use 
| the new gnuplot 4.2 features, and I like using the sombrero function to 
| test them. The attached patch allows the sombrero function to return the 
| function values without calling mesh if output arguments are supplied. 
| This allows something like [x,y,z]=sombrero; surf(x,y,z);.

Thanks, I applied this patch.

| I also have a slightly related question--is there any way to get version 
| information from gnuplot from within octave?

I suppose you could do something like start a gnuplot process and then
send it a command like

  save "foo.g"

and then parse the resulting file.  But that's kind of ugly.

jwe