[Octave-bug-tracker] [bug #46292] printed figure with multiple plots, in absolute positions, is truncated

[ederag]

Follow-up Comment #3, bug #46292 (project octave):

The attached hg export, relative to changeset 20599:1c5a86b7f838
fixes this bug for gnuplot. 

The sizes and resolution can also be given from command line (the -r or
-Ssx,sy options).
All the tests in the script attached pass with gnuplot.

Unfortunately with opengl (fltk or qt) things are still broken.
The discrepancy boils down to gnuplot using the real size, while the opengl
uses gl2ps which does not use the real size. Instead, gl2ps uses the positions
that are given in pixels, as if they were points (1 pt = 1 in / 72). This
leads to problems when absolute units (centimeters for instance) are used.
Actually the issue has already been raised:

http://www.geuz.org/pipermail/gl2ps/2015/000416.html

AFAIU, if the gl2ps behaviour can not be changed, we need to convert all the
positions, either for gnuplot or for opengl.
I would vote to use real sizes (as in the given patch), since it is nicer for
figure preparation (WYSIWYG), and scale the positions for opengl.


(file #35290, file #35291)
    _______________________________________________________

Additional Item Attachment:

File name: wysiwyg_15a25.hg.diff          Size:13 KB
File name: script_wysiwyg_tests.m         Size:1 KB


    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?46292>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/