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
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/
In gnuplot, how do I make labels consist of two parts, one of which is in regular text, and the other is in boldface? It's only easy to set a font for an entire sentence.
Using gnuplot 5 it is quite easy. In enhanced text mode, which is by default switched on, you can use the syntax {/:Bold ...} to select the boldface of whatever font is currently select. Likewise, using {/:Normal ...} and {/:Italic ...} selects normal or italic font styles:
set label 1 center at 0,0 '{/:Bold bold {/:Normal normal} {/:Italic bold italic}} {/:Italic italic}' font 'Linux Biolinum O,20'
plot x
i want to generate some plots from my data that i want to include in some documentation.
I put the box outside the graph area.
the problem is that for different plots the box has different sizes so also the graph area changes its size. this looks very messy in the document becasue the plots are vertical aligned.
I am searching for a way to fix the size of the box to some width that is appropriate for all plots but i could not found a way to do so.
the set key command has a width parameter but it seems not to do that one would expect from such a parameter.
It would be grat if someone could help.
thanks
vlad
I hope I got the correct impression of what you want. Consider the following example
reset
set multiplot layout 2,1
set rmargin screen 0.7
set key reverse Left left top at screen 0.72, graph 1
plot sin(x), cos(x) t 'long title'
plot sin(x), cos(x) t 'very long title'
unset multiplot
Which gives you:
Both the samples and the text do not move. You must only set an appropriate rmargin. left and top is the key box alignment regarding the position specified with at ..., although these settings are default, I explicitely included them for clarity. Left is the alignment of the entry text.
I am generating mapped 3D plots using the following config file (XRANGE and YRANGE are set later)
#!/usr/bin/gnuplot
reset
set term postscript eps enhanced
set size square
set xlabel "X position"
set ylabel "Y position"
#Have a gradient of colors from blue (low) to red (high)
set pm3d map
set palette rgbformulae 22,13,-31
set xrange [0 : XRANGE]
set yrange [0 : YRANGE]
set style line 1 lw 1
unset key
set dgrid3d 45,45
set hidden3d
splot "data.data" u 1:2:3
The resulting image looks something like this
Note: I have converted to jpg so the quality is lower, and I have placed a border around the image.
A great deal of space is wasted above and below. This is not a problem until I embed the image into a LaTex document, at which point it will look like so (again, pdf document converted to jpg image)
The image on the right is also created with GnuPlot, but it is slightly larger (as is evident by looking at the border I have drawn around the top two images). The reason for this is because GnuPlot pads the 3D plot with top and bottom white space. How can I remove this without having to manually edit all 50+ plots I have?
There are two solutions to this, one is unreliable, the other is a hack.
Using GnuPlot, the margin settings can be used to specify distances from the appropriate margins. For example, setting lmargin 0 and bmargin 0 essentially pushes the axes off the page. Similar values can be assigned to the tmargin and rmargin to stretch the graph. Although this worked for 2D graphs, it did not work for 3D graphs (I suspect this has to do with the fact that I set the graph to be a square).
When graphs are set to be of square size, Gnuplot still calculates for the entire screen. The eps file can be manipulated directly to change this by looking for a line like so %%BoundingBox: 50 50 410 302 and changing 410 to something smaller. Alternatively, and this is what I did, you can run eps2eps in.eps out.eps and it will crop it for you. Just make sure in.eps is not the same file as out.eps or it won't work.
I also crop the Bounding Box afterwards, since I hate playing around with margins in gnuplot. I realized that somehow, eps2eps indeed does adjust the bounding box, but it also transforms text (labels etc) into pixel-graphic?!
I usually use "epstool" which conserves text as text when croping the bb, the command I use is:
epstool --copy --bbox in.eps out.eps
Use the <scale> argument in set view, this will magnify the plot without changing text size or title position.
In your case, because you use the map view, you need:
set view 180,0,1.5
where 180,0 is equivalent to map view and 1.5 is the scaling factor.
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