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')
Related
I have a script file to generate an eps file with gnuplot. The basics of this script are:
set terminal postcript enhanced color size 30,20 font 'Times-ew-Roman,40'
set xtics -.5,0.125
set ytics 0.1,0.1
set xrange [-0.5,.5]
set yrange [0.,1.6]
set cbrange [-0.5,.5]
set output "file.eps"
plot #whatever i plot
This script generates an eps file, which I can open in ubuntu and I can see is well printed. Now, I want to import this eps into inkscape, but when importing inkscape imports a big frame with only the top left drawn. The rest is blank. Do I have to change anyvalue in my gnuplot script or do something else with inkscape? I tried to open it in inskcape windows and ubuntu versions, and in both cases it happens the same with the same file.
The problem may be that you have not actually asked gnuplot to produce an eps image. Instead you produced a generic PostScript document with a page size that does not match the default. You need to put the keyword "eps" in your terminal command:
set term postscript eps color size 30,20 font "Times-New-Roman,40"
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 have a sequence of gnuplot commands that produces a label with an underscript _{1} and the Ω symbol {/Symbol W} preceded by a small space &{.}, which
show correctly in the wxt window
show correctly on a SVG file exported from the wxt window
shows no underscript and .W if plotted to the SVG terminal
Here's a snippet of the code:
set label 3 "R_{1} 100&{.}{/Symbol W}"
set terminal svg size 1024,768 dynamic font 'Lohit' fsize 14 enhanced background 'white'
set output 'svg-file.svg'
plot ...
set terminal wxt 0 font 'Lohit,14' enhanced
set output
plot ...
I set both terminal to enhanced mode. What am I missing?
It's probably better these days to input Unicode directly, rather than using the Symbol font. Ω!
The output of your example with gnuplot's svg terminal contains the label as
<tspan font-family="Symbol" >W</tspan>
which leaves it to the viewer/browser to display it correctly. Your example works fine for me with Chrome/Edge, but not with Firefox.
The output of the wxt-svg-export doesn't contain text like show above, but the text is converted to paths in order to avoid such platform and viewer dependency (but has other drawbacks)
Can anyone suggest me how to write cm-1(cm^-1) as unit in the axis label.
Thanks,
Biki
Generally, you can use the enhanced text mode, which is supported by many terminals, e.g.:
set terminal wxt enhanced
set xlabel 'cm^{-1}'
plot x
For some terminals (e.g. epslatex) you can of course also use LaTeX to typeset all text.
UPDATE: this issue has been resolved in newer versions (>5.0) of gnuplot; see #andyras' answer.
I am having difficulty getting gnuplot to create labels with bold and enhanced text in non-postscript terminals. The following script
#!/usr/bin/env gnuplot
reset
set terminal pdfcairo enhanced color lw 3 size 3,2 font 'Arial-Bold'
set output 'output.pdf'
set tics scale 0
plot -x title 'normal text', \
-2*x t 'enhanced_{text}', \
-3*x t '{/Arial-Bold attempt to specify_{font}}'
set terminal pngcairo enhanced color lw 3 size 400,300 font 'Arial-Bold'
set output 'output.png'
replot
set terminal postscript enhanced color lw 3 size 6,4 font 'Arial-Bold'
set output 'output.eps'
replot
reset
Produces the following eps (converted to png with convert output.eps -rotate 90 outputeps.png):
which is fine. However, when I use the pdf or png terminals the result looks like this:
Note that while all the label text should be bold, only the label without any enhanced text is bold. In addition, when I try to manually specify the font (last line title) the font is different (reverts to the default?).
Is this behavior I should expect when not using the postscript terminal? Is there another way to specify fonts (i.e. is the naming scheme different outside of postscript)?
Since version 5.0, gnuplot has a new syntax to handle this issue:
"normal text {/Times:Bold boldface-newfont} {/:Italic slanted-default-font } back to normal text"]
These brackets can also be nested.
For Better results in pdf format.
Plot the curves using enhanced eps terminal. Then use Imagemagic to convert your output to pdf format. using the commands
convert myPlot.eps myPlot.pdf
Default resolution with this commands generates a poor output. This can be overcome by using density option with a value of 300. Modified command looks like
convert -density 300 myPlot.eps myPlot.pdf
I found that this preserves all the text formatting of eps file in pdf file.