Damien Riquet - gnuplot - Damien Riquet

Short vitae

I'm Damien Riquet, 24 years old, a PhD. Student within the 2XS research group at the University of Lille 1 (France). I hold a Master Degree (french equivalent of an MSc) in Computer Science from the University of Lille 1. My PhD (funded by the French Research Ministry), under the supervision of Gilles Grimaud and Michaël Hauspie, is about including Embedded probes for Cloud Security.

This website presents my research interests, publications and some blog entries.

Tricks

This page lists tricks that I learned while using softwares.

Some of them are very tricky and worthy to be shared, that's why I made up this page.

Gnuplot

Gnuplot is "a portable command-line driven graphing utility for Linux".

This program is largely used to illustrate results in scientific papers.

Scalable output

Use SVG or PDF output to get figures that scale on papers, presentations, etc.

set term svg enhanced mouse size 600,400
set output 'default_plot.svg'

The option enhanced improves the text mode and mouse tells gnuplot to add mouse support for toggling plots (in a browser for example). You can also use another font, by adding something like font 'Verdana,9' to term option.

Attrative plots

Basic gnuplot output seems cheap, we have to admit it, but a set of a options can improve the rendering. In this example, we :

select another font,

set term svg enhanced mouse size 600,400 font 'Verdana,9' rounded solid

edit the style of axis and plots,

set style line 11 lc rgb '#808080' lt 1
set border 3 back ls 11
set tics nomirror

display a grid.

set style line 12 lc rgb '#808080' lt 3 lw 0.5
set grid back ls 12

Default output (script | data | svg)

Nice output (script | data | svg)

Dot/Graphviz

Pretty diagrams

Like Gnuplot, default output looks cheap. You can select another font and edit nodes and edges style.

node [color="#808080",labelfontcolor=blue,style="rounded",shape="box", fontname=Verdana];
edge [color="#004080"];

Default output (script)

Nice output (script)

UML using dot

You can directly use dot language to design UML (Frank Schoep website or Martin Elwin website). You can also use PlantUML, a tool that uses dot language.

Record structure

Dot language can be used to easily represent structures. It could be useful when illustrating network packets, tree structures, and so on. Use the following command to build the graph :

dot -Tsvg tree_struct.dot -o tree_struct.svg

Tree structure (data | svg)