Since my eyes get less strained with dark windows, I'd like to set a dark background in my gnuplot terminal. Setting a dark square beneath the plot would be a solution, if only this would not affect readability (dark lines on dark background...).
I don't want to spend my day in finding color combinations, however by inverting the terminal color I would get exactly what I need: dark background and readable plots.
Does anyone know a command for inverting the terminal, or the name of an interactive terminal (supported by GNU/Linux) which supports color inversion?
Thanks in advance.
Many terminals (including png and wxt) have background option.
You can set dark background, for example:
set terminal wxt background '#00222222'
And then change border/axis color to something light, for example:
set style line 101 lc rgb '#808080' lt 1 lw 1
set border 3 front ls 101
I don't know about automatic 'color inversion', but this seems like a pretty good workaround. You can find some interesting information in Ease your plotting with config-snippets article.
See gnuplot-colorbrewer for some predefined color schemes.
Related
I am obtaining a strange behaviour on gnuplot 5.2.2 pdfcairo terminal with a label composed of several lines and attempted to be printed align to center. The label is the signature for my plots, it is composed of my name (first line), my institution (second line) and the date, obtained from time(0) and strftime.
In a multiplot script I noticed that the date (3rd line) was printed align to left while the other two line were printed align to center as intended. Then I placed the set label instruction before the first plot was called so that the label is printed two times. Then, in the first call, date was aligned to left but in the second call the date was aligned to center, as intended. Same happens if the align to right mode is intended. However if the strftime string is substituted by a regular string "foo" then alignment works fine.
This behaviour only happens if font is set to Arial and if the terminal is set to pdfcairo. If font is set to Ubuntu (or Times) or if the terminal is set to pngcairo then all calls print the label truly align to center.
A minimal workable example is:
set terminal pdfcairo enhanced color font "Arial,"
set output "prueba.pdf"
set multiplot layout 1,2
set colors podo
Cadena_firma="Martin-Olalla JM\nUniversidad de Sevilla\n".strftime("%Y/%m/%d",time(0))
set label 1 at screen 0.85,0.25 Cadena_firma noenhanced center font "Arial,10" tc rgb '#9d2235' front
set yrange [-2:2]
plot sin(x) lc 3
plot cos(x) lc 3
I attached the output, highlighting the weird printing of the date.
This is only happening in one of the computers I handle. It is easily solvable by changing the font. Nonetheless I am curious and it might be interesting for others.
There have been multiple reports of font problems that all appear to trace back to bad pango/cairo library versions. Some of the problems are OS-specific and some are font-specific. So there are probably multiple issues involved. Here are some tracker items:
https://gitlab.gnome.org/GNOME/pango/issues/422
and
https://sourceforge.net/p/gnuplot/bugs/2052/
I am using gnuplot with epslatex terminal. I want to know how to put the
label on top of a margin, so that the part of margin under the label is invisible. In the figure I attached, the part of margin under the label
is still visible.
In principle you should be able to tell gnuplot to put your text labels into a box by using the set label ... front boxed, and the specify that the box should be opaque and white using something like set style textbox opaque noborder fillcolor rgb "white". However, this is not supported by all terminals, and epslatex seems to be one of those where this doesn't work.
However, in epslatex you can simply use latex commands to create a white background box around your label text:
set term epslatex standalone
set outp "test.tex"
set label "\\colorbox{white}{This is a label}" at 6.,0.5 front
plot sin(x)
set output
gives
I`d like to write the math stuff into a plot using gnuplot 5:
I am using the terminal postscript enhanced because as far as I know this terminal is the only only capable of doing such things.
I used this code:
set label 1 at 400,200 '{/Symbol=50\362#_{/=15 350}^{/=15\154}}' front
This gets me everything except the subscribed averageunder the lambda symbol.
I tried everything with {,}and so on but I think I missing the part where I can escape the /SymbolStyle.
Many terminals support enhanced text, not only the postscript terminal.
In order to use another font than /Symbol for the subscript you could change the font explicitely to a different one for this. However, a better approach is to change the nesting so that /Symbol affects only two parts:
set label 1 at 0,0 '{/=50{/Symbol \362}#_{/=15 350}^{/=15{/Symbol \154}_{/=10 average}}' front
plot x
Output with gnuplot 5.0 with wxt is
If you're using the postscript terminal anyway, you could give a try to the epslatex terminal (or cairolatex):
set terminal epslatex standalone color colortext
set output 'equation.tex'
set label 1 at -5,5 '$\displaystyle\int_{350}^{\lambda_{\mathrm{average}}}$'
plot x
set output
system('latex equation.tex')
system('dvips equation.dvi')
system('ps2pdf equation.ps')
I am trying to make figures with gnuplot that will be included in a latex document. I want all figures to have the same dimensions and font size. To achieve it I found that I should specify the size of the figure in advance, which I do as such:
set terminal postscript eps size 3.4004,2.104 enhanced color
However, the resulting .eps figures have a lot of whitespace around them so I use the fixbb script to remove all unnecessary space. This changes the final size of the figure as well, which wouldn't be a problem as long as it is consistent. However, the amount of whitespace seems to vary from figure to figure, so my final figures have all different sizes.
This seems especially a problem with 3D plots.
Is there a way to make the size consistent while removing all unnecessary white space? In matplotlib there is the plt.tight_layout() command which does exactly that.
If by fixing the size of the figure you refer to the rectangle within which the data is plotted, you can set the margins manually. What I usually do for figures I put on my papers is use the epslatex terminal with the desired size and font, then set the margins, and then compile to pdf followed by a cropping to remove the white space. Example
set term epslatex color size 3.5,2.5 font 6
set output "gnuplot.eps"
set lmargin at screen 0.2
set rmargin at screen 0.98
set tmargin at screen 0.98
set bmargin at screen 0.1
plot sin(x) title '$\sin (x)$'
I embed this into a .tex file (which I call plot.tex):
\documentclass{article}
\usepackage[papersize={100cm,100cm}]{geometry}
\usepackage{graphicx}
\usepackage{color}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage[mathcal]{euscript}
\begin{document}
\thispagestyle{empty}
\include{gnuplot}
\end{document}
And run the following:
pdflatex plot.tex
pdfcrop plot.pdf
You will have a plot-crop.pdf with no white space around. Using different modifications of the above you can very precisely modify the size of your graph.
Finally, note that the epslatex terminal also allows the standalone option to avoid needing an external latex document to wrap your graph.
I have a script that renders graphs in gnuplot. The graphs all end up with an ugly white background. How do I change this? (Ideally, with a command that goes into a gnuplot script, as opposed to a command-line option or something in a settings file)
You can change the background color by command set object 1 rectangle from screen 0,0 to screen 1,1 fillcolor rgb"green" behind to set the background color to the the color you specified (here is green).
To get more knowledge about setting the background in gnuplot, you can visit this blog. There are even provided methods to set a gradient color background and background pictures. Good luck!
Ooh, found it. It's along the lines of:
set terminal png x222222 xffffff
It is a setting for some terminal (windows use background). Check out colorbox including its bdefault.
/Allan
According to the official documentation, as of version 5.4 the right way to set the background color in a gnuplot script is something like the following:
set term wxt background rgb "gray75"
Note that the color must be quoted. Beside color names you can use hex values with the format "#AARRGGBB" or "0xAARRGGBB