Re: problem with placing legend with GNUplot

[Ben Abbott]

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