Re: problem with placing legend with GNUplot

[Ben Abbott]

On May 6, 2012, at 6:26 PM, Karel Karlovič wrote:

> 2012/5/7 Ben Abbott <address@hidden>:
>> On May 6, 2012, at 6:13 PM, Karel Karlovič wrote:
>> 
>>> 2012/5/6 Ben Abbott <address@hidden>
>>>> 
>>>> 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
>>> I use LaTeX via TeXmaker, my command is \includegraphics from package
>>> \usepackage[dvips]{graphicx}
>>> 
>>> It isn't necessary to have same type and size of symbols, I only need
>>> to easy "read possibility" (it means no tiny text).
>>> 
>>> Karel
>> 
>> Ok. If you are using pdflatex, then you'll need to convert the eps to pdf 
>> first. Otherwise, you can just include the eps file directly. For example, 
>> to include an eps file in latex ...
>> 
>>        \begin{figure}
>>        \label{fig:example}
>>        \includegraphics[width=16cm]{example.eps}
>>        \caption{Put your caption here.}
>>        \end{figure}
>> 
>> Ben
> 

> OK, but how can I get eps from octave/gnuplot?

From Octave ...

        print -depsc example2.eps

Since you'll encounter the same legend problems ...

        drawnow ("postscript eps", "example.eps", false, "debug.gp")

Then edit the debug.gp file as needed and from gnuplot type

        load "debug.gp"

Ben