View source for Gnuplot/C2/LaTeX-and-Gnuplot/English

{| border=1
|| '''Visual Cue'''
|| '''Narration'''

|-
|| '''Slide Number 1'''
'''Title Slide '''
|| Welcome to the tutorial on''' Latex and gnuplot'''.

|-
|| '''Slide Number 2'''
'''Learning Objectives'''
|| In this tutorial, we will 
* 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 and generate a pdf file and
* Crop the '''pdf''' file using pdfcrop 

|-
|| '''Slide Number 3'''
'''System and Software Requirement'''
|| To record this tutorial, I am using
* '''Ubuntu Linux''' version 16.04 OS
* '''gnuplot''' 5.2.6
* '''Gedit''' 3.18
* '''TexWorks''' 0.6.3
* '''pdfcrop''' 1.38

|-
|| '''Slide Number 4'''
'''System and Software Requirement'''
|| '''Windows''' users need '''Miktex''' and '''ActivePerl 5.28''' to use '''pdfcrop'''.

|-
|| '''Slide Number 5'''
'''Pre-requisites'''
|| To follow this tutorial,
* Learner must be familiar with the basics of '''gnuplot''' and '''Latex'''.
* For prerequisite tutorials please visit this site.

|-
|| '''Slide Number 6'''
'''Code Files'''
|| The input files used in this tutorial are provided in the '''code files''' link.
Please download and extract the file.

|-
|| '''Slide Number 7'''
'''Download link'''
|| Download links for '''texworks, '''Active Perl''' and Miktex''' are shown here.

|-
|| Show screenshot of Desktop with '''graph.dat '''.
|| I have saved the input file '''data.txt''' on the '''Desktop'''.

|-
|| Show screenshot of '''data.txt'''.
|| The file consists of 3 columns, '''x, y1, y2''' type data.

|-
|| Press '''Ctrl+Alt+T''' .
Type '''cd Desktop''' and press '''Enter'''.
|| Please open a '''terminal''' and change the directory to '''Desktop'''. 
I will write and save a script here using gedit text editor.

|-
|| Type '''gedit gnuplot-tex.plt &''' and press '''Enter'''.
|| Enter the command as seen on the screen to make a script file.
'''Ampersand''' detaches the process from the '''terminal'''.

|-
|| Cursor on '''gedit''' text editor.
|| Let's write the script to plot the 2 graphs on screen. 

|-
|| 
|| I will plot the 2 sets of data, '''y1''' and '''y2,''' on '''y-axis'''.

|-
|| Type '''#interactive plot '''and press '''Enter'''.
|| First, I will write a comment line.

Let’s plot x-y1 data.


|-
|| Type, '''set terminal x11''' and press '''Enter'''.
|| I will set the terminal.

|-
||Type, '''set boxwidth 1
set tics in
set format y '%0.1e' 
set xtics 
set ytics 
set title "gnuplot and latex" '''
and press '''Enter'''.
|| I will add graph formatting commands and add a title for the plot.

|-
|| Type, 
'''set xlabel "$\\beta_u^2$ values"
'''set ylabel "$\\sigma_y^2$" '''
and press '''Enter'''.

|| Here, we are incorporating '''latex''' symbols, '''beta''' and '''sigma''' in axis labels.

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

The '''carat''' 2 creates a superscript for the number two.

|-
|| Type, 
'''plot "data.txtgraph.dat" using 1:2 title 'Y1''''
and press '''Enter'''.
|| Plot '''x y1''' data and specify the legend as '''Y1'''.

|-
|| Type 
'''pause -1 “Press enter to continue”'''
and press '''Enter'''.
|| Next, type the '''pause -1''' command line as seen on the screen.

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.

|-
|| Type, 
'''set ticslevel 0.5
set boxwidth 1
set format y '%0.2e' '''
and press '''Enter'''.
|| Next, we will plot x-y2 data. 


|-
|| Type, '''set title "gnuplot-tex integration"
set xlabel "$\\beta_u^2$ values"
set ylabel "$\\sigma_y^2$"
and press '''Enter'''.
|| I will again add few graph formatting commands.

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

|-
|| Type, '''plot "data.txt" using 1:3 title 'Y2' with line'''
and press '''Enter'''.
|| Make a plot with the first and the third columns here.

|-
|| Type, 
'''pause -1 “Press return to continue”'''
and press '''Enter'''.
|| Again, enter the command '''pause -1''', with '''press return to continue''' at the prompt.

|-
|| Press '''Ctrl+S''' and press '''Enter'''.
Type '''gnuplot''' and press '''Enter'''.
|| I will save the file.
Minimize '''gedit''' and go back to the '''terminal'''.

Open '''gnuplot''' from the '''terminal'''.

|-
|| Press '''Ctrl + Shift + K'''.
|| I will also clear the screen.

|-
|| Type, '''load 'gnuplot-tex.plt'''' and press '''Enter'''.
|| Let’s load the newly created script file as seen.

|-
|| Hover mouse over the axis labels.
|| Notice the first plot has axis labels.
They are in '''Latex''' format, we will compile later on in this tutorial.

|-
|| Press '''Enter''' in the '''terminal'''.
|| The terminal prompt reads, '''press enter to continue'''.
Press '''Enter''' in the '''terminal''' and notice the second plot.

|-
|| Cursor on graphical window.
|| Now, I have seen both the plots. 
I want to plot '''y1''' and '''y2''' together in a '''latex''' scaffold to generate a '''tex''' file.

|-
|| Press '''Enter''' in the '''terminal'''.
|| Again, press '''Enter''' in the '''terminal'''.
Now we are back on '''gnuplot''' prompt.

|-
|| Go to the '''gedit''' window.
|| Go to the '''gedit''' window to edit the script.

|-
|| Type, 
'''#latex file output'''
and press '''Enter'''.
|| Let's generate a '''tex''' file output from '''gnuplot'''.

I will add a comment line first mentioning the same.

|-
|| Type, 
'''set term latex
set output "gnuplot.tex"'''
and press '''Enter'''.
|| Set the '''term''' to '''latex''' and give an output file name.

Here, the output filename is '''gnuplot dot tex'''.

This generates a file in '''tex''' format.

|-
|| Type, 
'''set xlabel "$\\beta$"
set ylabel "$\\sigma_y^2$"
and press '''Enter'''.
|| Here again, '''Latex''' symbols are incorporated in axis labels.

|-
||Type, '''plot "data.txt" using 1:2 title 'Y1' , "data.txt" using 1:3 title 'Y2' with linespoint lc 'blue' lw 2 pt 7 ps 1.5'''
and press '''Enter'''.
|| I will change line, symbol and color properties in the plot command. 

|-
||Type, '''pause 3 ‘Now tex file is generated’ '''
and press '''Enter'''.
|| For demonstration I will add 3 seconds delay after the pause.

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

|-
|| Type '''reset''' and press '''Enter'''.
|| Type '''reset''', to reset the '''terminal''' at the end of the script.

|-
|| Press '''Ctrl+S''' and press '''Enter'''.
Type '''gnuplot''' and press '''Enter'''.
|| Save the file.
Minimize '''gedit''' and go back to the '''terminal'''.

|-
|| Type, '''load 'gnuplot-tex.plt'''' and press '''Enter'''.
|| Load the script file again.

|-
|| Press '''Enter''' in the '''terminal'''.
|| Press '''Enter''' in the '''terminal''' and notice the second plot.

|-
|| Press '''Enter''' in the '''terminal'''.
|| Press '''Enter''' again on the terminal, as seen here.

|-
|| Text message '''Now text file is generated''' is displayed on the screen.
||After the 3 seconds pause, the prompt returns to '''gnuplot''' prompt.

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

|-
|| Type '''q''' and press '''Enter'''.
|| Let’s exit '''gnuplot'''.

|-
|| Go to '''Desktop'''.
|| Go to '''Desktop''' and notice the newly generated '''tex''' file.

|-
|| Open the '''tex''' file.
|| Open the file using tex program.
Notice a large file in '''tex''' format.

|-
|| Cursor on the '''tex''' file and scroll.
|| We will compile this file with '''tex''' and generate a '''pdf''' file output.

For this purpose, do the following.

|-
|| Press '''Ctrl+N''' .
|| Open a new blank file from the '''tex''' window.

|-
|| Type, 
'''\documentclass{article}'''
'''\usepackage{color}'''
and press '''Enter'''.
|| Enter the commands as seen on the screen. 

We will add header and user package details.

|-
|| Type,
'''\setlength{\textwidth}{100cm}'''
'''\setlength{\textheight}{100cm}'''
and press '''Enter'''.
|| Pause the video as and when required.

|-
|| Type,
'''\begin{document}'''
'''\pagestyle{empty}'''
'''\input{gnuplot.tex}'''
'''\end{document}'''
and press '''Enter'''.
|| Next, compile the '''gnuplot''' generated file in '''latex'''.

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

Then, specify to end the document.

|-
|| Press '''Control+S''' to save.
Give file name '''bgnuplot.tex''', in '''Desktop''' folder.
|| Let’s save the file.

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

|-
|| Click on the '''typeset''' icon.
|| Now, click on the '''typeset''' icon or button to generate the '''pdf''' file.
A '''pdf''' file appears on the screen.

|-
|| Hover mouse over Greek symbols, superscript and subscript.
|| Now, you have generated the graph integrating '''gnuplot''' and '''latex'''.
Notice the '''Greek symbols''', superscript and subscript in the '''pdf''' file.

|-
|| Close both '''tex''' documents and the '''pdf''' file.
|| Close the '''tex''' documents and the '''pdf''' file.

|-
|| Go to the '''terminal'''.
|| Let's go back to the '''terminal'''.

Now, crop this document using the '''pdfcrop'''.

|-
|| Press '''Ctrl+L'''.
|| I will also clear the screen.

|-
|| Type '''pdfcrop bgnuplot.pdf''' and press '''Enter'''.
|| Enter the command, '''pdfcrop space bgnuplot dot pdf'''.

|-
|| Cursor next to '''pdfcrop'''.
|| This program crops the margins from the '''pdf''' file.

The '''pdfcrop''' has named the file with a '''crop''' suffix.

|-
|| Show screenshot accessing '''pdfcrop''' in '''windows'''.
|| The '''pdfcrop''' may look similar to this for '''Windows''' users.

|-
|| Go to '''Desktop'''.
|| Go to '''Desktop''' again and notice the newly generated cropped file.

|-
|| View the cropped file.
|| Open the cropped file to view it.

|-
|| Close the cropped '''pdf''' file.
|| I will close this '''pdf''' file.

|-
|| '''Slide Number 8'''

'''Summary'''
|| Now let's summarize.

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'''.

|-
|| '''Slide Number 9'''
'''Assignment 1'''

|| For assignment activity, practise the exercise learned in this tutorial.
* Read the documentation on pause command from the help section.
* Suspend the script with 
* time delay of 10 seconds and 
* with a mouse click.

|-
|| '''Slide Number 9'''
'''Assignment 2'''
|| * Use data file '''assignment.txt''', to generate a graph.
* You may also use your own choice of dataset.

|-
|| '''Slide Number 10'''
'''Assignment 2'''
|| 
* Generate a '''LaTex''' output for a '''gnuplot''' graph.
* Compile the file in '''LaTex''' and generate a '''pdf''' file output.

|-
|| '''Glimpse of assignment'''.
|| Your assignment may look similar to this.

|-
|| '''Slide Number 11'''
'''Spoken Tutorial Project'''
|| This video summarises the '''Spoken Tutorial Project'''.
Please download and watch it.

|-
|| '''Slide Number 11'''
'''Spoken Tutorial workshops'''
|| The '''Spoken Tutorial Project''' Team 
* conducts workshops and 
* gives certificates.

For more details, please write to us. 

|-
|| '''Slide Number 12'''
'''Forum for specific questions:'''
|| Post your timed queries in the forum.

|-
|| '''Slide Number 13'''
'''Acknowledgement'''
|| '''Spoken Tutorial Project''' is funded by '''MHRD''', '''Government of India'''.

|-
|| 
|| This is Rani from IIT, Bombay. Thank you for joining.

|-
|}