Patch to add quiver3 and surfnorm

[John W. Eaton]

On 26-Nov-2007, David Bateman wrote:

| Here is a patch I worked on over the weekend that adds the quiver3
| function. Matlab has a strange arrow head in the xy plane for the arrows
| of quiver3 and so if you are looking at the plot in the xz or yz plane
| then the arrowhead tend to disappear. This is the same as in matlab
| itself and so I don't see that we can do much..

| 2007-11-23  David Bateman  <address@hidden>
| 
|       * plot/quiver3.m, plot/surfnorm.m: New functions.
|       * plot/Makefile.in (SOURCES): Add them to the sources.

Please apply this patch.

Thanks,

jwe