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Re: problem with placing legend with GNUplot


From: Ben Abbott
Subject: Re: problem with placing legend with GNUplot
Date: Sun, 06 May 2012 17:57:44 -0400

On May 6, 2012, at 5:43 PM, Karel Karlovič wrote:

> 2012/5/6 Ben Abbott <address@hidden>
> On May 6, 2012, at 5:02 PM, Karel Karlovič wrote:
> 
> > 2012/5/6 Ben Abbott <address@hidden>
> >
> > On May 6, 2012, at 4:27 PM, Karel Karlovič wrote:
> >
> > > 2012/5/6 Ben Abbott <address@hidden>
> > >> On May 6, 2012, at 4:20 AM, Karel Karlovič wrote:
> > >>
> > >> >
> > >> > 2012/5/6 Ben Abbott <address@hidden>
> > >> >
> > >> > On May 5, 2012, at 12:24 PM, Ben Abbott wrote:
> > >> >
> > >> > >
> > >> > > On May 5, 2012, at 12:12 PM, Karel Karlovič wrote:
> > >> > >
> > >> > >>
> > >> > >> 2012/5/5 Ben Abbott <address@hidden>
> > >> > >>> On May 5, 2012, at 7:50 AM, Karel Karlovič wrote:
> > >> > >>>
> > >> > >>>> 2012/5/4 Ben Abbott <address@hidden>
> > >> > >>>>
> > >> > >>>>> On May 4, 2012, at 12:38 AM, kovarka4 wrote:
> > >> > >>>>>
> > >> > >>>>>> Wonderful!
> > >> > >>>>>>
> > >> > >>>>>> I'm using fltk, but I want to use gnuplot.
> > >> > >>>>>>
> > >> > >>>>>> close all
> > >> > >>>>>> graphics_toolkit gnuplot  work for one time. But when I close 
> > >> > >>>>>> octave and
> > >> > >>>>>> open it again, there is again "fltk". Is there some possibility 
> > >> > >>>>>> to change
> > >> > >>>>>> graphics_toolkit to gnuplot permanently?
> > >> > >>>>>>
> > >> > >>>>>> And I have some other problem. I'm using non-english symbols 
> > >> > >>>>>> like á é í etc.
> > >> > >>>>>> Is there some possibility to use UTF-8?
> > >> > >>>>>>
> > >> > >>>>>> Thanks!
> > >> > >>>>>
> > >> > >>>>> To change the default, edit your ~/.octaverc file and change the 
> > >> > >>>>> line ...
> > >> > >>>>>
> > >> > >>>>>       graphics_toolkit fltk
> > >> > >>>>>
> > >> > >>>>> to
> > >> > >>>>>
> > >> > >>>>>       graphics_toolkit gnuplot
> > >> > >>>>>
> > >> > >>>>> Regarding the non-english symbols, I tried ...
> > >> > >>>>>
> > >> > >>>>>       text (0.5, 0.5, 'á é í')
> > >> > >>>>>
> > >> > >>>>> and the resulted rendered as desired. If it does not for you, 
> > >> > >>>>> the problem is with gnuplot and its fonts.
> > >> > >>>>>
> > >> > >>>>> Ben
> > >> > >>>>
> > >> > >>>> Yes, it works with the legend!
> > >> > >>>> Problem  with fonts is solved (maybe with using gnuplot?).
> > >> > >>>>
> > >> > >>>>
> > >> > >>>> But, when I make legend with
> > >> > >>>>
> > >> > >>>> legend(labels, "location", 'northeastoutside')
> > >> > >>>> legend("right")
> > >> > >>>> then color lines are still inside the box with graph. See 
> > >> > >>>> pict1.png.
> > >> > >>>>
> > >> > >>>> When I make
> > >> > >>>>
> > >> > >>>> legend(labels, "location", 'northeastoutside') % not 
> > >> > >>>> legend("right")
> > >> > >>>>
> > >> > >>>> color lines are outside, but text is on the border of graph. See 
> > >> > >>>> pict2.png.
> > >> > >>>>
> > >> > >>>> Do you know how to get legend with lines alltogether outside of 
> > >> > >>>> the box with graph?
> > >> > >>>>
> > >> > >>>> Thanks!
> > >> > >>>
> > >> > >>> If you can produce a simple example so that I (or someone else) 
> > >> > >>> can duplicate what you're seeing, then we can file a bug report 
> > >> > >>> and provide a work around for you.
> > >> > >>>
> > >> > >>> Running the developers sources for Octave 3.6.x,  and with either 
> > >> > >>> the gnuplot and fltk graphics toolkits, the following works for me 
> > >> > >>> (the legend and plot box do not overlap)
> > >> > >>>
> > >> > >>>       clf
> > >> > >>>       plot(1:10, 1:10);
> > >> > >>>       title("a very long label can sometimes cause problems");
> > >> > >>>       legend({"hello world"}, "location", "northeastoutside");
> > >> > >>>
> > >> > >>> If I add ...
> > >> > >>>
> > >> > >>>       legend right
> > >> > >>>
> > >> > >>> There is still no overlap between the legend and plot box.
> > >> > >>>
> > >> > >>> Ben
> > >> > >>
> > >> > >> OK, I made this also
> > >> > >>
> > >> > >> clf
> > >> > >>        plot(1:10, 1:10);
> > >> > >>        title("a very long label can sometimes cause problems");
> > >> > >>        legend({"hello world"}, "location", "northeastoutside");
> > >> > >>        legend("right");
> > >> > >>        print('-dpng','example.png');
> > >> > >>
> > >> > >> and the result image stil has a line inside the graph box, part is 
> > >> > >> over the box...see example.png
> > >> > >>
> > >> > >> And to my script...
> > >> > >>
> > >> > >> format long g
> > >> > >>
> > >> > >> vstup = [ 0.00500     0.02000    -0.02700     1.00000;
> > >> > >>    -0.00100     0.01000     0.03000     2.00000;
> > >> > >>     0.00500     0.00100    -0.00200     3.00000;
> > >> > >>     0.00400     0.00100     0.00100     4.00000;
> > >> > >>     0.00400     0.00000    -0.00100     5.00000;
> > >> > >>     0.00500     0.00300     0.00200     6.00000;
> > >> > >>     0.00600     0.00000     0.00300     7.00000;
> > >> > >>     0.00400    -0.00100     0.00300     8.00000;
> > >> > >>     0.00500    -0.00100     0.00100     9.00000;
> > >> > >>     0.00700    -0.00100     0.00100    10.00000;
> > >> > >>     0.01200     0.00900     0.00800    11.00000;
> > >> > >>     0.00000    -0.00800     0.00100    12.00000;
> > >> > >>    -0.00300    -0.01100    -0.00300    13.00000;
> > >> > >>    -0.00400    -0.01800    -0.00900    14.00000;
> > >> > >>    -0.00100    -0.00600     0.00000    15.00000;
> > >> > >>    -0.00200    -0.01200     0.00200    16.00000;
> > >> > >>     0.00600    -0.00100     0.00700    17.00000;
> > >> > >>    -0.00300    -0.00900    -0.00900    18.00000;
> > >> > >>     0.01200     0.01300     0.00800    19.00000;
> > >> > >>     0.00000    -0.00600     0.00000    20.00000;
> > >> > >>    -0.00100    -0.01100    -0.00200    21.00000;
> > >> > >>     0.00600    -0.00100     0.00500    22.00000;
> > >> > >>     0.00100    -0.00600     0.00400    23.00000;
> > >> > >>    -0.00300    -0.00800     0.00800    24.00000;
> > >> > >>     0.00400     0.00200     0.00800    25.00000];
> > >> > >>
> > >> > >> % globalni prumery
> > >> > >> plat = [744958.652      1040903.756 258.727]; % A
> > >> > >> %%%%%%%%%%%%%%%%%%%%%
> > >> > >> % C O M P U T I N G %
> > >> > >> %%%%%%%%%%%%%%%%%%%%%
> > >> > >> # aa = [0,interval(1,1),interval(2,1),ii];  % hodnota, kde ma byt 
> > >> > >> umisten popisek
> > >> > >> # bb = [cas00;cas20;cas40;cas60]; % popisek na miste hodnoty aa
> > >> > >> ii=rows(vstup);
> > >> > >> interval = [ii/3,2*ii/3];
> > >> > >> figure(1)
> > >> > >> hold on
> > >> > >> title("Odchylka souřadnice X [m] od globálního průměru polohy 
> > >> > >> pilíře")
> > >> > >> xlabel('jednotlivé body reprezentují čas záznamu po 15 sec')
> > >> > >> ylabel('odchylka od průměru [m]')
> > >> > >> plot([ii,0], [0,0],'-g')
> > >> > >> plot(vstup(1:7,4),vstup(1:7,1),'-r',vstup(8:16,4),vstup(8:16,1),'-b',vstup(17:end,4),vstup(17:end,1),'-c')
> > >> > >> axis([00,ii,-0.02,0.02])
> > >> > >> labels={'globální průměr','CZEPOS','Trimble VRS Now','TopNET'};
> > >> > >> legend(labels, "location", 'northeastoutside')
> > >> > >> print('example2.png','-dpng');
> > >> > >> hold off
> > >> > >> pause
> > >> > >>
> > >> > >>
> > >> > >> When I don't write
> > >> > >>
> > >> > >> legend("right");
> > >> > >>
> > >> > >> it is prety good. But the no-english symbols are bad (see in the 
> > >> > >> script and on the image "example2.png").
> > >> > >>
> > >> > >> I'm so sorry, if everything is my stupid mistake.
> > >> > >>
> > >> > >> Karel
> > >> > >
> > >> > > Ok. Thanks.
> > >> > >
> > >> > > This definitely is not working correctly. I'll try to track down the 
> > >> > > problem.
> > >> > >
> > >> > > Ben
> > >> >
> > >> > I did some experimenting, constructed a illustrative example, and 
> > >> > entered a bug report.
> > >> >
> > >> >        https://savannah.gnu.org/bugs/index.php?36408
> > >> >
> > >> > To work around this problem, you'll need to output the gnuplot stream, 
> > >> > edit it, and then process it through gnuplot again.
> > >> >
> > >> > First, after producing the plot in Octave, type the following to save 
> > >> > the gnuplot commands in "debug.gp"
> > >> >
> > >> >        drawnow ("png", "example2.png", false, "debug.gp")
> > >> >
> > >> > Next edit "debug.gp" and modify the line begining with "set rmargin". 
> > >> > The value may initially be negative, You'll need to experiment, but 
> > >> > using 0.7 should give a reasonable result.
> > >> >
> > >> >        set rmargin screen 0.70;
> > >> >
> > >> > Save "debug.gp" and run gnuplot. From the gnuplot command prompt, type 
> > >> > ....
> > >> >
> > >> >        load "debug.gp"
> > >> >
> > >> > This will produce a new "example2.png"
> > >> >
> > >> > Ben
> > >> >
> > >> >
> > >> > <example2.png><debug.gp>
> > >> > Hi,
> > >> > the comand line was
> > >> >
> > >> > set rmargin screen 0.71750366116446;
> > >> >
> > >> > I tryed the value between 0.65 and 0.75. But it provide an empty 
> > >> > image. Maybe I made something wrong...I don't know what to do.
> > >> >
> > >> > Images and debug.gp are in attachement.
> > >> >
> > >> > Karel
> > >>
> > >> I edited your debug.gp and replaced the font specifications "{},10" with 
> > >> ",10". The modifed debug2.gp and the example2.png it produced are 
> > >> attached.
> > >>
> > >> Ben
> > >
> > > Beautiful, it looks like I want :-)
> > >
> > > But, I stil get an empty image, after I changed "{},10" to ",10"
> >
> > My guess is that gnuplot isn't finding any fonts it can use for png output.
> >
> > Can you use eps instead. If so, does the attached work for you?
> >
> > Ben
> >
> > I'm sorry, I don't know how to use eps, can you help me with this 
> > possibility?
> 
> How to you plan to use the image ? (word processing, web page, etc ?)
> 
> Ben
> 
> Word processing, exactly diploma project. I wanna print it on A4, 3 images on 
> 1 paper...

Ok. What word processor ? and do you require that the font's be the same type 
an size in the text and the figures ?

Ben




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