[Octave-bug-tracker] [bug #47455] very slow legend execution

[marco atzeri]

URL:
  <http://savannah.gnu.org/bugs/?47455>

                 Summary: very slow legend execution
                 Project: GNU Octave
            Submitted by: matzeri
            Submitted on: Fri 18 Mar 2016 11:12:02 AM GMT
                Category: Plotting
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Performance
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.0.0
        Operating System: Any

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Details:

Legend execution time is very long when
first or new location is requested .
The legend time can be more than the plot time:

octave:3> source legenda_profile.m
bAfter =  1
Elapsed time is 0.405601 seconds.
Graph plotted
Elapsed time is 0.546001 seconds.
Legend command #1 
Elapsed time is 0 seconds.
Legend command #2 
Elapsed time is 0.501201 seconds.
Legend command #3 
Elapsed time is 0.0468001 seconds.
remaining plot stuff
   #             Function Attr     Time (s)   Time (%)        Calls
-------------------------------------------------------------------
  72             __line__             0.265      48.57           23
  35                  set             0.078      14.29           83
   1               legend             0.031       5.71            1
  15                  get             0.031       5.71          375
  76              cellfun             0.031       5.71           23
  61                 text             0.016       2.86           17
   9                numel             0.016       2.86          382
  14                  gcf             0.016       2.86           41
  51          __go_axes__             0.016       2.86            1
  65          __go_text__             0.016       2.86           17
  77          __go_line__             0.016       2.86           23
  81              findobj             0.016       2.86            1
   2               nargin             0.000       0.00          194
   3             binary >             0.000       0.00          350
   4             ishandle             0.000       0.00           44
   5             prefix !             0.000       0.00          199
   6 __plt_get_axis_arg__             0.000       0.00           41
   7              strcmpi             0.000       0.00          166
   8                 find             0.000       0.00          105
  10            binary ==             0.000       0.00          378




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File Attachments:


-------------------------------------------------------
Date: Fri 18 Mar 2016 11:12:02 AM GMT  Name: legenda_profile.m  Size: 1kB  
By: matzeri
Test case
<http://savannah.gnu.org/bugs/download.php?file_id=36685>

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