I want to save some plots that I obtain from different gnuplot programs, ran at different time to go on to the same postscript. At present, if I set the terminal to postscript and give an output file like this:
set terminal postscript eps size 19.2,10.80 enhanced color \
font 'Helvetica,20' linewidth 2
set output 'temp.eps'
gnuplot overrrides the existing file "temp.eps" and plots the new plot in a new file. How can I make it to append another page to the existing postscript?
You can use latex to do this. The following tex file (which I have named test.tex) will embed your eps files (here temp.eps and temp2.eps) into the same PS file:
\documentclass{article}
\usepackage{graphicx}
\begin{document}
\centering
\includegraphics[width=0.9\textwidth]{temp}
\newpage
\centering
\includegraphics[width=0.9\textwidth]{temp2}
\end{document}
For which you need to run
latex test.tex
dvips test.dvi
which generates a PS document called test.ps which contains temp.eps in the first page and temp2.eps in the second page.
Related
I want to have a gnuplot with a box on the right top corner like the one below. My difficulties are both:
how to get \hat{Q} in a the legend?
how to add a box containing the titles?
set term cairolatex eps standalone size 3in,3in
set output 'Q.tex'
set key box opaque samplen 0.5
plot for [i=1:4] sinc(x)**i title sprintf('\tiny${\hat{Q}=%d}$',i) lw 2
The standalone keyword wraps the output in minimal LaTeX commands so that you can run latex Q directly. Omit this if you want to produce a LaTeX fragment for including in a larger document.
I show how to construct a formatted title that includes a LaTeX font size. Note that the format uses single quotes rather than double quotes.
This example uses cairolatex eps because you specifically asked about an eps file. Normallay I would use cairolatex png or cairolatex pdf and process afterwards with pdflatex rather than plain latex.
If you want to include your figure into LaTeX, you should use the terminal cairolatex, then you can include LaTeX code in your plots:
plot "your.data" title '$\hat{Q}=10$'
Concerning your second question, have a look at the manual concerning set key.
I have a file containing some commands :
$ cat components.plg
set terminal png
set output output
set font "Helvetica,10"
unset xtics
unset ytics
unset border
plot "reportGraph_0" with lines title "Component 0", "reportGraph_1" with lines title "Component 1", "aoi.txt" with lines title "Area of interest"
$
I won't display the contents of reportGraph_# here, but anything with 2 points in them is valid.
I then launch gnuplot with this file as parameter, and I get a warning about Arial (I'm not entirely sure why).
$ gnuplot -e "output='footprint.png' " components.plg
Could not find/open font when opening font "arial", using internal non-scalable font
$
However, the result image has its text in non-Helvetica (but more in something like Monospace sans).
Here are the two images (first the output of the command line, second the output of the same sequence of commands launched in a gnuplot shell, and exporting the result image). There is one difference, I didn't use the first two commands (set terminal png and set output output) in gnuplot - I merely "exported" the image as png.
The question is : why don't I have the same font in these two images?
I would like to have Helvetica (or Lucida Grande, but not a monospace font).
Gnuplot has a large variety of terminals. When you launch an interactive gnuplot session and plot you probably use the wxt or qt terminal. By exporting the image from the plot window you save the image as theyes were created by those terminals.
Now, with set terminal png you use a different and quite old terminal, with different capabilities, especially regarding font rendering.
If you want to save your image directly as png, use the pngcairoterminal, which produces higher quality images (the result should be equivalent to that of the exported image from wxt).
The pngcairo, or the pdfcairo terminals should also handle your fonts properly.
The png terminal is older than pngcairo, but it can still use a specified font. You can just specify a path to a .ttf or .pfa font file:
set terminal png font "/path/to/your/Helvetica.pfa"
or a comma-separated pair of the font file path and point size:
set terminal png font '/usr/share/fonts/liberation/LiberationSans-Regular.ttf,9'
gnuplot uses libgd so if you set the environment variable GDFONTPATH to the directory containing your .ttf or .pfa font files, you can specify just the font name instead of the full path:
set terminal png font 'LiberationSans-Regular'
Documentation for setting fonts with different terminals is available within gnuplot under help fonts gd, help fonts cairo, and help fonts postscript.
I have an image in PDF format and I want to add to an existing gnuplot plot.
My current code is like:
set terminal postscript eps enhanced color solid font "Nimbus Roman No9 L" 35
set output '|epstopdf --filter > Patterns.pdf'
set size 1.8,1.8
set style data histogram
set style histogram cluster gap 1
plot 'Patterns.dat' using ($2/2.90):xtic(1) title col fs pattern 3
and the pdf file is stored in image.pdf.
It can be done, at least with the epslatex terminal. First, for my example, I am going to generate a pdf file which is a gnuplot-generated figure:
set term epslatex standalone
set output "plot1.tex"
plot sin(x)
Now, outside gnuplot, I generate the pdf file (named plot1.pdf):
pdflatex plot1.tex
which looks like this:
To embed this into a gnuplot graph, I use again the epslatex terminal and embed plot1.pdf as I would do with any pdf file in a latex document, using the \includegraphics[]{} environment, with a gnuplot label:
set term epslatex standalone
set output "plot2.tex"
set label at graph 0.75,0.25 '\includegraphics[width=2cm]{plot1.pdf}'
plot x
And, again run pdflatex:
pdflatex plot2.tex
that generates plot2.pdf, which looks like this:
By changing the location of the label you can change the location of the embedded pdf; by changing the width you can change, guess what, the width of the embedded pdf.
I am looking for a way to add small icons on the plot, like OK or KO symbols, flags, arrows and such.
So far I've seen an example where you can add a background image, but nothing that actually allow me to set a point on the plot, like I could do with a label, and apply there an icon.
Is there a way to do so?
Call me obsessive but as usual this can be done with the epslatex terminal, embedding the image using a set label statement as you would do in regular latex. If your image is so-icon.png, then within gnuplot do:
set terminal epslatex standalone header "\\usepackage{graphicx}"
set output "plot.tex"
set label at screen 0.5,0.5 '\includegraphics{so-icon.png}'
plot sin(x)
And now run pdflatex
pdflatex plot.tex
Your output will be named plot.pdf and look like this:
Change the positioning of the label (help set label for more info) to wherever you want. You can also use the formatting options of \includegraphics{}, for example \includegraphics[width=2cm]{} for a 2cm wide version of your image (sorry, I don't do inches!).
Note that if you want to embed PNG, JPEG, GIF, PDF and so on, the pdflatex command is required, you cannot use regular latex for those.
I'm currently developping a java application that processes information and that info has to be saved as graphs in a pdf file. I got like 60 graphs as output, all with a different title.
What is an easy way to make a table of content from all the graphs based on their title?
Is there a command that can do this? Or do I have to use pdfmarks?
I can't find anything about this on the internet because if I use the words table of content I just get the table of content of gnuplot/ghostscript itself...
Thanks in advance
You can generate the PDF using Latex and then use the epslatex terminal in gnuplot to generate the figures. You can write a script which generates the Latex document.
The gnuplot script:
set term epslatex color size 3,2 font 6
set output "figure1.eps"
#
set title 'Title of figure1'
#
plot sin(x)
#
exit
This generates an EPS file named figure1.eps and a Latex file named figure1.tex which embeds the EPS.
The the following Latex can in turn embed figure1.tex into a document:
\documentclass{article}
\usepackage{graphicx}
\usepackage{color}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage[mathcal]{euscript}
\begin{document}
\listoffigures
\begin{figure}
\centering
\include{figure1}
\caption[Description of figure1 as it appears on the list of
figures]{Caption of figure1.}
\end{figure}
\end{document}
Using the \listoffigures command a list of figures will be generated. You might need to run Latex a couple of times before the table appears. Then use dvipdf to export to PDF. The result should look like this: