Re: Octave-3.3.55 and Octave-3.3.90 on OSX

[Richard Campbell]

On Jan 30, 2011, at 2:48 PM, Ben Abbott wrote:

> On Jan 30, 2011, at 1:10 PM, Richard Campbell wrote:
> 
>> On Jan 30, 2011, at 1:04 PM, John W. Eaton wrote:
>> 
>>> On 30-Jan-2011, Richard Campbell wrote:
>>> 
>>> | It's just a line plot. I pasted it in an earlier message in this thread. 
>>> I get
>>> | the same error when trying to print if I had typed surf(peaks) as well. It
>>> | plots fine on the screen, I just can't print it to a file.
>>> | 
>>> | octave:1> plot(randn(10,1))
>>> | octave:2> print('-dpng','test.png')
>>> | warning: print.m: fig2dev binary is not available
>>> | error: invalid assignment to cs-list outside multiple assignment
>>> | error: matrix cannot be indexed with {
>>> | error: evaluating argument list element number 3
>>> | error: called from:
>>> | error:   /Users/campbell/Downloads/octave-3.3.90/scripts/plot/print.m at 
>>> line
>>> | 390, column 11
>>> | octave:2> print('-depsc','test.eps')
>>> | error: invalid assignment to cs-list outside multiple assignment
>>> | error: matrix cannot be indexed with {
>>> | error: evaluating argument list element number 3
>>> | error: called from:
>>> | error:   /Users/campbell/Downloads/octave-3.3.90/scripts/plot/print.m at 
>>> line
>>> | 390, column 11
>>> | octave:2> print('-dtiff','test.tiff')
>>> | error: invalid assignment to cs-list outside multiple assignment
>>> | error: matrix cannot be indexed with {
>>> | error: evaluating argument list element number 3
>>> | error: called from:
>>> | error:   /Users/campbell/Downloads/octave-3.3.90/scripts/plot/print.m at 
>>> line
>>> | 390, column 11
>>> | 
>>> 
>>> In 3.3.90, line 390 of print.m is
>>> 
>>>  ## restore modified properties
>>>  if (isstruct (props))
>>>    for n = 1:numel(props)
>>>      if (ishandle (props(n).h))
>>>        set (props(n).h, props(n).name, props(n).value{1});  <<< line 390
>>>      endif
>>>    endfor
>>>  endif
>>> 
>>> Try this in Octave:
>>> 
>>> dbstop print 390
>>> peaks
>>> print ('-depsc', 'test.eps')
>>> 
>>> then when you get the "debug>" prompt, try looking at the following
>>> items:
>>> 
>>> numel (props)
>>> props
>>> props(1)
>>> props(2)
>>> 
>>> Here is what I see:
>>> 
>>> debug> numel (props)
>>> ans =  2
>>> debug> props
>>> props =
>>> 
>>>  1x2 struct array containing the fields:
>>> 
>>>    h
>>>    name
>>>    value
>>> 
>>> debug> props(1)
>>> ans =
>>> 
>>>  scalar structure containing the fields:
>>> 
>>>    h =  1
>>>    name = position
>>>    value = 
>>>    {
>>>      [1,1] =
>>> 
>>>         300   200   560   420
>>> 
>>>    }
>>> 
>>> debug> props(2)
>>> ans =
>>> 
>>>  scalar structure containing the fields:
>>> 
>>>    h =  1
>>>    name = color
>>>    value = 
>>>    {
>>>      [1,1] =
>>> 
>>>         1   1   1
>>> 
>>>    }
>>> 
>>> I guess you don't have the same props(?).value.  If not, then why is
>>> it not set correctly?  You can do
>>> 
>>> dbstop print
>>> peaks
>>> print ('-depsc', 'test.eps')
>>> 
>>> and then step through print.m with dbstep to see where  props(?).value
>>> is set.  Note that after you type a command at the debug prompt,
>>> pressing the Enter by itself will repeat the previous command, so
>>> stepping is easy.
>>> 
>>> jwe
>> 
>> 
>> octave:1> dbstop print 390
>> ans =  390
>> octave:2> peaks
>> octave:3> print('-depsc', 'test.eps');
>> warning: print.m: fig2dev binary is not available
>> error: invalid assignment to cs-list outside multiple assignment
>> stopped in /Users/campbell/Downloads/octave-3.3.90/scripts/plot/print.m at 
>> line 390
>> 390:           set (props(n).h, props(n).name, props(n).value{1});
>> debug> numel(props)
>> ans =  2
>> debug> props
>> props =
>> 
>> 1x2 struct array containing the fields:
>> 
>>   h
>>   name
>>   value
>> 
>> debug> props(1)
>> ans =
>> 
>> scalar structure containing the fields:
>> 
>>   h =  1
>>   name = position
>>   value = 
>>   {
>>     [1,1] =
>> 
>>        300   200   560   420
>> 
>>   }
>> 
>> debug> props(2)
>> ans =
>> 
>> scalar structure containing the fields:
>> 
>>   h =  1
>>   name = [](0x0)
>>   value = [](0x0)
>> 
>> 
>> and then while dbstepping through print.m:
>> 
>> debug> dbstep
>> stopped in /Users/campbell/Downloads/octave-3.3.90/scripts/plot/print.m at 
>> line 297
>> 297:     props(2).h = opts.figure;
>> debug> dbstep
>> stopped in /Users/campbell/Downloads/octave-3.3.90/scripts/plot/print.m at 
>> line 298
>> 298:     props(2).name = "color";
>> debug> dbstep
>> error: invalid assignment to cs-list outside multiple assignment
>> stopped in /Users/campbell/Downloads/octave-3.3.90/scripts/plot/print.m at 
>> line 387
>> 387:     if (isstruct (props))
> 
> props(2) is the problem.  Lines 297-300 set the name and value.
> 
> 297     props(2).h = opts.figure;
> 298     props(2).name = "color";
> 299     props(2).value{1} = get (props(2).h, props(2).name);
> 300     set (props(2).h, props(2).name, "none");
> 
> I don't see how these fields end up empty. 
> 
> Please add another breakpoint at line 300, and check that the fields of 
> props(2). Also check the fields of "opt". You can see the result I get below.
> 
> dbstop print 300
> ans =  300
> peaks
> print ('-depsc', 'test.eps');
> stopped in /Users/bpabbott/Development/Octave_Toolbox/print/print.m at line 
> 300
> 300: set (props(2).h, props(2).name, "none"); 
> debug> props(2)
> ans =
> 
>  scalar structure containing the fields:
> 
>    h =  1
>    name = color
>    value = 
>    {
>      [1,1] =
> 
>         1   1   1
> 
>    }
> 
> debug> opts
> opts =
> 
>  scalar structure containing the fields:
> 
>    append_to_file = 0
>    canvas_size =
> 
>       576   432
> 
>    debug = 0
>    debug_file = octave-print-commands.log
>    devopt = epsc
>    epstool_binary = /sw/bin/epstool
>    figure =  1
>    fig2dev_binary = /sw/bin/fig2dev
>    fontsize = 
>    font = 
>    force_solid = 0
>    formatted_for_printing = 0
>    ghostscript =
> 
>      scalar structure containing the fields:
> 
>        binary = /sw/bin/gs
>        debug = 0
>        device = 
>        epscrop =  1
>        level = [](0x0)
>        output = 
>        papersize = 
>        pageoffset =
> 
>           0   0
> 
>        resolution =  150
>        antialiasing = 0
> 
>    loose = 0
>    lpr_binary = /usr/bin/lpr
>    name = test.eps
>    orientation = portrait
>    pstoedit_binary = /sw/bin/pstoedit
>    preview = 
>    printer = 
>    send_to_printer = 0
>    special_flag = textnormal
>    tight_flag = 0
>    use_color =  1
>    lpr_options = -l
>    unlink = {}(0x0)
>    pstoedit_cmd = @pstoedit
>    fig2dev_cmd = @fig2dev
>    latex_standalone = @latex_standalone
>    lpr_cmd = @lpr
>    epstool_cmd = @epstool
> 
> Ben
> 
> 
> 
> 

dbstop print 300 has no effect, which tells me that the line is never being 
executed.

dbstop print 297 stops as expected, though. If I step forward from there:

octave:1> peaks
octave:2> dbstop print 297
ans =  297
octave:3> print('-depsc','test.eps')
warning: print.m: fig2dev binary is not available
stopped in /Users/campbell/Downloads/octave-3.3.90/scripts/plot/print.m at line 
297
297:     props(2).h = opts.figure;
debug> dbstep
stopped in /Users/campbell/Downloads/octave-3.3.90/scripts/plot/print.m at line 
298
298:     props(2).name = "color";
debug> dbstep
error: invalid assignment to cs-list outside multiple assignment
stopped in /Users/campbell/Downloads/octave-3.3.90/scripts/plot/print.m at line 
387
387:     if (isstruct (props))