Re: graphics_toolkit qt

[Ben Abbott]

> On Jul 17, 2016, at 12:09 PM, Clinton Winant <address@hidden> wrote:
> 
> On Sun, Jul 17, 2016 at 3:37 AM, Ben Abbott <address@hidden> wrote:
> > On Jul 16, 2016, at 5:56 PM, Ben Abbott <address@hidden> wrote:
> >
> > On Jul 15, 2016, at 04:45, Clinton Winant <address@hidden> wrote:
> >
> >> BTW the .tex file produced by
> >>
> >>  print("qt_greek.tex","-depslatexstandalone");
> >> does not compile with current version of latex.  The file requires the 
> >> preamble
> >>
> >> \documentclass{article}
> >> \usepackage{graphicx,xcolor}
> >> \begin{document}
> >>  and the closing statement
> >> \end{document}
> >
> > That's a bug. Can you file a bug report?
> >
> > https://savannah.gnu.org/bugs/?group=octave
> >
> > Ben
> 
> opps! Maybe not a bug. I tried a simple example using the developer’s sources 
> (default branch).
> 
> graphics_toolkit qt
> plot (rand (3))
> text (0.5, 0.5, "\lambda is a greek letter", "horizontalalignment", "center")
> print ("qt_greek.tex", "-depslatexstandalone”);
> 
> The tex output is below.
> 
> \documentclass{minimal}
> \usepackage{epsfig,color}
> \usepackage[papersize={576.00bp,432.00bp},text={576.00bp,432.00bp}]{geometry}
> \begin{document}
> \centering
> % Title: gl2ps_renderer figure
> % Creator: GL2PS 1.3.9, (C) 1999-2015 C. Geuzaine
> % For: Octave
> % CreationDate: Sat Jul 16 22:28:37 2016
> \setlength{\unitlength}{1pt}
> \begin{picture}(0,0)
> \includegraphics{qt_greek-inc}
> \end{picture}%
> \begin{picture}(576,433)(0,0)
> \fontsize{12}{0}
> \selectfont\put(74.88,43.5189){\makebox(0,0)[t]{\textcolor[rgb]{0,0,0}{{1}}}}
> \fontsize{12}{0}
> \selectfont\put(186.48,43.5189){\makebox(0,0)[t]{\textcolor[rgb]{0,0,0}{{1.5}}}}
> \fontsize{12}{0}
> \selectfont\put(298.08,43.5189){\makebox(0,0)[t]{\textcolor[rgb]{0,0,0}{{2}}}}
> \fontsize{12}{0}
> \selectfont\put(409.68,43.5189){\makebox(0,0)[t]{\textcolor[rgb]{0,0,0}{{2.5}}}}
> \fontsize{12}{0}
> \selectfont\put(521.28,43.5189){\makebox(0,0)[t]{\textcolor[rgb]{0,0,0}{{3}}}}
> \fontsize{12}{0}
> \selectfont\put(69.8755,48.52){\makebox(0,0)[r]{\textcolor[rgb]{0,0,0}{{0}}}}
> \fontsize{12}{0}
> \selectfont\put(69.8755,118.936){\makebox(0,0)[r]{\textcolor[rgb]{0,0,0}{{0.2}}}}
> \fontsize{12}{0}
> \selectfont\put(69.8755,189.352){\makebox(0,0)[r]{\textcolor[rgb]{0,0,0}{{0.4}}}}
> \fontsize{12}{0}
> \selectfont\put(69.8755,259.768){\makebox(0,0)[r]{\textcolor[rgb]{0,0,0}{{0.6}}}}
> \fontsize{12}{0}
> \selectfont\put(69.8755,330.184){\makebox(0,0)[r]{\textcolor[rgb]{0,0,0}{{0.8}}}}
> \fontsize{12}{0}
> \selectfont\put(69.8755,400.6){\makebox(0,0)[r]{\textcolor[rgb]{0,0,0}{{1}}}}
> \end{picture}
> \end{document}
> 
> Ben
> 
> Still a bug, but ????
> 
> I am using:
>  
> GNU Octave, version 4.0.0
> Copyright (C) 2015 John W. Eaton and others.
> This is free software; see the source code for copying conditions.
> There is ABSOLUTELY NO WARRANTY; not even for MERCHANTABILITY or
> FITNESS FOR A PARTICULAR PURPOSE.  For details, type 'warranty'.
> 
> Octave was configured for "x86_64-pc-linux-gnu".
> 
> OS:  ubuntu 16.04 - 64 bit
> 
> When I run the code you posted, things that are different from what you have, 
> occur:
> 
> (1) The text line only produces centered text if I use 
> text (2, 0.5, "\lambda is a greek letter", "horizontalalignment", "center")
> 
> ie the x location must be within the frame generated by the plot command, 
> even with the "horizontalalignment" modifier.
> (2) In that case, the string \lambda appears on the screen as "lambda", 
> however if the double quotes are replaced by single quotes:
> text (2, 0.8, '\lambda is a greek letter', "horizontalalignment", "center")
> the \lambda produces the greek character.  I conclude that in qt the 
> generation of the proper greek character is determined by the use of single 
> quotes rather than double quotes.  Notice that in the latex file included in 
> your message there is no text, presumably because of point (1).
> 
> The first and last lines of the latex files generated on my system are as 
> follows:
> 
> % Title: glps_renderer figure
> % Creator: GL2PS 1.3.8, (C) 1999-2012 C. Geuzaine
> % For: Octave
> % CreationDate: Sun Jul 17 16:47:04 2016
> \setlength{\unitlength}{1pt}
> .
> .
> ​\selectfont\put(186.48,118.936){\makebox(0,0)[l]{\textcolor[rgb]{0,0,0}{{lambda=pi}}}}
> \end{picture}
> 
> The preable and end lines are consistently not generated on my system. Might 
> the problem be associated with my using 4.0.0?  If so, since the ubuntu 16.04 
> repos don't have 4.0.1 yet,  can you point me to a set of instructions on how 
> to configure, make and make install for octave source?
> 
> Thanks so much to all of you​

Opps, sorry for the horizontal position and the double quotes.I tried Octave 
4.0.3. It also produced the correct tex-file.

Ben