Difference between revisions of "Gnuplot/C2/LaTeX-and-Gnuplot/English"

Title Slide

Learning Objectives

• Learn the pause command to suspend script file execution
• Add Latex symbols in axis labels
• Export the output to a Latex file
• Open the Latex compiler file, compile it, generate a pdf file and
• Crop the pdf file using pdfcrop

System and Software Requirement

• Ubuntu Linux version 16.04 OS
• gnuplot 5.2.6
• Gedit 3.18
• TexWorks 0.6.3
• pdfcrop 1.38

System and Software Requirement

Pre-requisites

• Learner must be familiar with the basics of gnuplot and Latex.
• For prerequisite tutorials please visit this site.

Code Files

Please download and extract the file.

Download link

Type cd Desktop and press Enter.

I will write and save a script here using gedit text editor.

The ampersand detaches the process from the terminal.

Let’s plot x-y1 data.

set boxwidth 1

set tics in

set format y '%0.1e'

set xtics

set ytics

set title "gnuplot and latex"

and press Enter.

set xlabel "$\\beta_u^2$ values"

set ylabel "$\\sigma_y^2$"

and press Enter.

The underscore u, will format the u subscript in latex at a later stage.

The carat 2 creates a superscript for the number two.

plot "data.txt" using 1:2 title 'Y1'

and press Enter.

pause -1 “Press enter to continue” and press Enter.

The pause command suspends the script and waits for a user input.

The -1 refers to the user input, which require the user to press the Enter key.

The text press Enter to continue is also displayed on the screen.

set ticslevel 0.5

set boxwidth 1

set format y '%0.2e'

and press Enter.

set xlabel "$\\beta_u^2$ values"

set ylabel "$\\sigma_y^2$"

and press Enter.

I will also give a title and incorporate Latex symbols in axis labels.

and press Enter.

pause -1 “Press return to continue” and press Enter.

Click on the save button on the top right corner.

They are in Latex format, we will compile later on in this tutorial.

Press Enter in the terminal and notice the second plot.

Let's plot y1 and y2 together in a latex scaffold to generate a tex file.

Now we are back on gnuplot prompt.

#latex file output and press Enter.

I will add a comment line first mentioning the same.

set term latex set output "gnuplot.tex" and press Enter.

Here, the output filename is gnuplot dot tex.

This generates a file in tex format.

set xlabel "$\\beta_u^2$"

set ylabel "$\\sigma_y^2$"

and press Enter.

and press Enter.

and press Enter.

The message text display would read, Now tex file is generated.

Type gnuplot and press Enter.

Minimize gedit and go back to the terminal.

The output is a latex file as specified in the script.

Notice a large file in tex format.

For this purpose, do the following.

\documentclass{article}

\usepackage{color}

and press Enter.

We will add header and user package details.

\setlength{\textwidth}{100cm}

\setlength{\textheight}{100cm}

and press Enter.

\begin{document}

\pagestyle{empty}

\input{gnuplot.tex}

\end{document}

and press Enter.

Mention the name of the tex file that is to be compiled.

Then, specify to end the document.

Give file name bgnuplot.tex, in Desktop folder.

I will give filename as bgnuplot dot tex and save in the Desktop folder.

A pdf file appears on the screen.

Notice the Greek symbols, superscript and subscript in the pdf file.

Now, crop this document using pdfcrop.

The pdfcrop has named the file with a crop suffix.

Summary

In this tutorial, we

• Learned the pause command
• Generated a latex output file
• Compiled the latex file to generate a pdf file of the graph and
• Cropped the output pdf file using pdfcrop.

Assignment 1

• Read the documentation on pause command from the help section.
• Suspend the script with
• time delay of 10 seconds and
• with a mouse click.

Assignment 2

• You may also use your own choice of dataset.

Assignment 2

• Generate a LaTex output for a gnuplot graph.
• Compile the file in LaTex and generate a pdf file output.

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Acknowledgement