plotting on top of images

[Ben Abbott]

On May 26, 2009, at 6:33 PM, Ben Abbott wrote:

>
> On May 26, 2009, at 5:42 PM, John W. Eaton wrote:
>
>> On 26-May-2009, Ben Abbott wrote:
>>
>> | While I don't recall the details, I have a test script related to
>> that
>> | changeset. It is attached.
>> |
>> | Presently, it fails for me with and without the semicolon (but
>> | slightly differently). I've attached the gnuplot errors as well.
>> |
>> | Ben
>> |
>> | <multiplot.m>| Without the ";"
>> |
>> | octave:10> multiplot
>> | octave:11>
>> | multiplot> splot "-" binary format='%float64' record=49x49 using
>> ($1):($2):($3):($4) title "" with pm3d linestyle 1 splot "-" binary
>> array=2x2 scan=yx origin=(1,1) dx=1 dy=1 using 1 title "" with image
>> splot "-" binary array=4x4 scan=yx origin=(1,1) dx=1 dy=1 using 1
>> title "" with image splot "-" binary array=2x2 scan=yx origin=(1,1)
>> dx=1 dy=1 using 1 title "" with image splot "-" binary array=4x4
>> scan=yx origin=(1,1) dx=1 dy=1 using 1 title "" with image ;
>> |
>>                                                                                                                     ^
>> |            line 0: ';' expected
>> |
>> |
>> | Now with the ";"
>> |
>> | octave:11> multiplot
>> | octave:12>
>> | multiplot> splot "-" binary format='%float64' record=49x49 using
>> ($1):($2):($3):($4) title "" with pm3d linestyle 1 splot "-" binary
>> array=2x2 scan=yx origin=(1,1) dx=1 dy=1 using 1 title "" with
>> image; splot "-" binary array=4x4 scan=yx origin=(1,1) dx=1 dy=1
>> using 1 title "" with image; splot "-" binary array=2x2 scan=yx
>> origin=(1,1) dx=1 dy=1 using 1 title "" with image; splot "-" binary
>> array=4x4 scan=yx origin=(1,1) dx=1 dy=1 using 1 title "" with
>> image; splot "-" binary array=2x2 scan=yx origin=(1,1) dx=1 dy=1
>> using 1 title "" with image; splot "-" binary array=4x4 scan=yx
>> origin=(1,1) dx=1 dy=1 using 1 title "" with image; ;
>> |
>>                                                                                                                     ^
>> |            line 0: ';' expected
>>
>> These multiple splot commands come from the
>>
>> hold on
>> colorbar
>> imagesc(1./hilb(2));
>> hold off
>>
>> hold on
>> imagesc(1./hilb(4));
>> hold off
>>
>> commands?  I don't see that at all.  If I look at what's sent to
>> gnuplot, I don't see any splot commands.  Also, with the current
>> sources, I don't see any errors unless I make the change I proposed
>> here:
>>
>> https://www-old.cae.wisc.edu/pipermail/bug-octave/2009-May/
>> 008613.html
>>
>> So I guess that change is not the right thing.  But without it,
>> plotting lines on top of images is broken.  I think we need a fix for
>> this problem before we release 3.2.0.
>>
>> jwe
>
> hmmm ... it would appear something is wrong with my copy of the
> current sources :-(
>
> I'll fix that before comment further.
>
> Ben

It appears that I've fixed the problem with my build. I appear to have  
a working solution. However, I'm not very confident in it as I haven't  
studied this part of the sources sufficiently to understand it  
sufficiently.

The part of the sources where the problem lies appears (to me) to have  
been contributed by David when he added the isosurface.

David, if you have the time, can you comment?

Ben


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