Re: "unset ytics" in gnuplot 4.2.3 mirrored tics drawn

[John W. Eaton]

On 31-Mar-2008, David Bateman wrote:

| In Octave the colorbar is part of the axis to which it is associated
| rather than a separate entity. So to get the feature you want we have
| two choices. We could add additional properties to the axis in addition
| to the __colorbar__ property to allow the setting of the colorbar tick
| properties.

I'd prefer to avoid doing that because I think it would be much better
if we avoid filling the properties database with entries that are
specific to individual backends.

For example, I added the key, keybox, and keypos properties because I
saw the legend as essential but did not have time to try to implement
it in a compatible way.  But eventually, we will need to do that,
(though I suspect we may never actually end up doing it for the
gnuplot backend if the OpenGL backend becomes the default).

| Or we could implement the colorbar as a separate set of axes
| with a callback to the axis it is associated with to set the color. The
| first would be relatively easy to implement, but means that the setting
| of the colorbar tick properties would not be matlab compatible. However
| the second seems quite tricky to get right and uses parts of the code
| that Shai and Michael are modifying. So I'm not sure of the best
| approach to get the behavior you are after.

I'd say wait until after the new graphics code is merged.

Perhaps we should have a plan for doing that?  I'd be happy to merge
any time if it is mostly working.  For now (and probably through the
3.1 release series) we could leave the gnuplot backend as the default
but allow switching to the OpenGL backend for testing purposes.

jwe