Graphic properties not working

[John W. Eaton]

On 24-Mar-2009, Ben Abbott wrote:

| On Mar 24, 2009, at 3:29 AM, Marco Caliari wrote:
| 
| > On Mon, 23 Mar 2009, Ben Abbott wrote:
| >
| >>
| >> On Monday, March 23, 2009, at 10:37AM, "Marco Caliari" <marco.caliari at univr.it 
| >> > wrote:
| >>> Dear maintainers,
| >>>
| >>> I noticed that some (all?) graphic properties do not work anymore in
| >>> Octave 3.1.54
| >>>
| >>> octave:1> contourf(peaks,'EdgeColor','blue')
| >>> error: set: unknown property "EdgeColor"
| >>> error: called from:
| >>> error:   /usr/local/share/octave/3.1.54/m/plot/__contour__.m at  
| >>> line 191, column 5
| >>> error:   /usr/local/share/octave/3.1.54/m/plot/contourf.m at line  
| >>> 71, column 5
| >>>
| >>> I don't know if it is a bug or a syntax change.
| >>>
| >>> Best regards,
| >>>
| >>> Marco
| >>
| >> Using matlab, your example does work. However, Matlab's hggroup has  
| >> no "EdgeColor" property. It appears that Matlab is setting the  
| >> "LineColor" property when the "EdgeColor" property is specified.
| >>
| >> If you do that directly, you'll get what you desire.
| >>
| >> contourf (peaks, "linecolor", "blue")
| >
| > Thanks, it works. I suspected a regression since  
| > contourf(peaks,'EdgeColor','blue') works in Octave 3.0.x and  
| > surface(peaks,'EdgeColor','blue') works in Octave 3.1.54. Anyway,  
| > now I have the following (always reproducibile)
| >
| > octave:1> surface(peaks,'EdgeColor','blue') # it works
| >
| > BUT
| >
| > octave:2> contourf(peaks,'EdgeColor','blue') # it does not work, as  
| > expected
| > error: set: unknown property "EdgeColor"
| > error: called from:
| > error:   /usr/local/share/octave/3.1.54/m/plot/__contour__.m at line  
| > 191, column 5
| > error:   /usr/local/share/octave/3.1.54/m/plot/contourf.m at line  
| > 71, column 5
| > octave:2> surface(peaks,'EdgeColor','blue') # it does not work  
| > anymore!!!
| > error: gnuplot (as of v4.2) only supports 2D filled patches
| > error: called from:
| > error:   /usr/local/share/octave/3.1.54/m/plot/__go_draw_axes__.m at  
| > line 543, column 4
| > error:   /usr/local/share/octave/3.1.54/m/plot/__go_draw_figure__.m  
| > at line 90, column 3
| > error:   /usr/local/share/octave/3.1.54/m/plot/gnuplot_drawnow.m at  
| > line 69, column 5
| >
| > That is, if you call surface(peaks,'EdgeColor','blue') after a  
| > contourf(peaks,'EdgeColor','blue'), the former does not work anymore.
| >
| > Best regards,
| >
| > Marco
| 
| I'm not sure this is a regression. There is no "EdgeColor" property  
| for Matlab's hggroup, and my memory is that Octave's hggroup is a  
| rather recent addition, and was not used in 3.0.3 (?).

I think the point is that after the contourf failure, the call to
surface fails when it worked previously.  Why should that happen?
What state is set internally on the contourf failure that carries
over to the next call to surface and causes it to fail?

jwe