Book Image

gnuplot Cookbook

By : Lee Phillips
Book Image

gnuplot Cookbook

By: Lee Phillips

Overview of this book

gnuplot is the world's finest technical plotting software, used by scientists, engineers, and others for many years. It is in constant development and runs on practically every operating system, and can produce output in almost any format. The quality of its 3d plots is unmatched and its ability to be incorporated into computer programs and document preparation systems is excellent. gnuplot Cookbook ñ it will help you master gnuplot. Start using gnuplot immediately to solve your problems in data analysis and presentation. Quickly find a visual example of the graph you want to make and see a complete, working script for producing it. Learn how to use the new features in gnuplot 4.4. Find clearly explained, working examples of using gnuplot with LaTeX and with your own computer programming language. You will master all the ins and outs of gnuplot through gnuplot Cookbook. You will learn to plot basic 2d to complex 3d plots, annotate from simple labels to equations, integrate from simple scripts to full documents and computer progams. You will be taught to annotate graphs with equations and symbols that match the style of the rest of your text, thus creating a seamless, professional document. You will be guided to create a web page with an interactive graph, and add graphical output to your simulation or numerical analysis program. Start using all of gnuplot's simple to complex features to suit your needs, without studying its 200 page manual through this Cookbook.
Table of Contents (18 chapters)
gnuplot Cookbook
About the Author
About the Reviewers
Finding Help and Information

Creating an inset plot

A common pattern is a graph enclosing another smaller graph that reveals a detail in the larger graph by plotting it using a magnified scale. Following is an example:

In the previous figure, the smaller plot is usually called an inset. We can create this figure with the script given in the following How to do it... section.

How to do it…

The following script produces the previous figure:

set multiplot
set object ellipse center .13, 0 size .4, 4
set arrow from .1, 2.1 to screen .22, .4 front lt 3
set samples 1000
set grid
set xtics .4
set ytics 4
plot [0:2*pi] exp(x)*sin(1/x)
set origin .2, .4
set size .25,.25
unset key
unset grid
unset object
unset arrow
set xtics .1
set ytics .5
set bmargin 1
set tmargin 1
set lmargin 3
set rmargin 1
plot [0:.2] exp(x)*sin(1/x)
unset multiplot

How it works…

There are few new commands here. We have simply combined several things covered earlier in order to create an illustration consisting of a large graph, an inset, and a device consisting...