GnuPlotPlugin

A plugin that allows the display of GnuPlot graphs.

Syntax Rules

• Just add %GNUPLOT{"PlotName"}% anywhere in the page where you want the plot to appear and save the topic
• Multiple plots can be displayed within one topic
• Any CSV (Comma Seperated Variable) file attached to the topic can be used with the plot or splot commands

Examples

The following images are examples of plots generated by GnuPlot:

Simple function test

Pre-rendered sample (TestInstall):

Plugin (TestInstall): %GNUPLOT{"TestInstall"}%

Verbatim (TestInstall): %GNUPLOT{"TestInstall"}% Plot settings: set title "TestInstall" set datafile separator "," set terminal png plot sin(x), cos(x), x*x/10

Multi graphs with errorbars, datafile based

Pre-rendered sample (MultigraphWithErrorbars):

Plugin (MultigraphWithErrorbars): %GNUPLOT{"MultigraphWithErrorbars"}%

Verbatim (MultigraphWithErrorbars): %GNUPLOT{"MultigraphWithErrorbars"}% Plot settings: set title "MultigraphWithErrorbars" set xlabel "X Axis Label" set ylabel "Y Axis Label" set term gif set data style lp set terminal png plot [.8:4.2] "MultigraphWithErrorbarsData.data" using 1:2 t "Curve Title", \ "MultigraphWithErrorbarsData.data" using 1:2:3:4 notitle with errorbars ps 0, \ "MultigraphWithErrorbarsData.data" using 1:5 t "Other Curve", \ "MultigraphWithErrorbarsData.data" using 1:5:6:7 notitle with errorbars ps 0

Damped sinus, datafile based

Pre-rendered sample (DampedSinus):

Plugin (DampedSinus): %GNUPLOT{"DampedSinus"}%

Verbatim (DampedSinus): %GNUPLOT{"DampedSinus"}% Plot settings: set title "DampedSinus" set xlabel "X Axis Label" set ylabel "Y Axis Label" set terminal png plot 'DampedSinusData.data'

Map of Denmark, datafile based (data from CIA World Data Bank II)

Pre-rendered sample (CIAWorldDataBankIIDenmark):

Plugin (CIAWorldDataBankIIDenmark): %GNUPLOT{"CIAWorldDataBankIIDenmark"}%

Verbatim (CIAWorldDataBankIIDenmark): %GNUPLOT{"CIAWorldDataBankIIDenmark"}% Plot settings: set title "CIAWorldDataBankIIDenmark" set noxtics set noytics set noborder set data style dots set terminal png plot "CIAWorldDataBankIIDenmarkData.data" title "" with lines

Interlocking Tori (3D)

Pre-rendered sample (InterlockingTori):

Plugin (InterlockingTori): %GNUPLOT{"InterlockingTori"}%

Verbatim (InterlockingTori): %GNUPLOT{"InterlockingTori"}% Plot settings: set parametric set isosamples 50,10 set hidden set title "Interlocking Tori" set key below set urange [-pi:pi] set vrange [-pi:pi] set isosamples 50,20 set terminal png splot cos(u)+.5*cos(u)*cos(v),sin(u)+.5*sin(u)*cos(v),.5*sin(v) with lines, 1+cos(u)+.5*cos(u)*cos(v),.5*sin(v),sin(u)+.5*sin(u)*cos(v) with lines

Blue Whale (3D), datafile based

Pre-rendered sample (BlueWhale):

Plugin (BlueWhale): %GNUPLOT{"BlueWhale"}%

Verbatim (BlueWhale): %GNUPLOT{"BlueWhale"}% Plot settings: set parametric set hidden3d set nokey set xrange [0:8] set yrange [-4:4] set zrange [-2:2] set data style line set title "Blue Whale" set terminal png splot "whale.dat"

Alternative GnuPlot render sizes, Rosenbrock Function

This one is shown in 350x280. Try blowing it up in size - alter the set terminal png size 350,280 line into something larger (i.e. 1000,1000).

Pre-rendered sample (RosenbrockFunction):

Plugin (RosenbrockFunction): %GNUPLOT{"RosenbrockFunction"}%

Verbatim (RosenbrockFunction): %GNUPLOT{"RosenbrockFunction"}% Plot settings: set logscale z 10 set view 20, 340, 1, 1 set isosamples 60, 60 set hidden3d offset 1 trianglepattern 3 undefined 1 altdiagonal bentover set style data lines set ticslevel 0 set title "Rosenbrock Function" 0.000000,0.000000 font "" set xlabel "x" -5.000000,-2.000000 font "" set xrange [ * : * ] noreverse nowriteback # (currently [0.00000:15.0000] ) set ylabel "y" 4.000000,-1.000000 font "" set yrange [ * : * ] noreverse nowriteback # (currently [0.00000:15.0000] ) set zlabel "Z axis" 0.000000,0.000000 font "" set zrange [ * : * ] noreverse nowriteback # (currently [-1.20000:1.20000] ) set terminal png size 350,280 splot [-1.5:1.5] [-0.5:1.5] (1-x)**2 + 100*(y - x**2)**2

Plugin Settings

• One line description, is shown in the TextFormattingRules topic:
• Set SHORTDESCRIPTION = Allows users to plot data and functions using GnuPlot

• Debug plugin: (See output in data/debug.txt)
• Set DEBUG = 0

Plugin Installation Instructions

Note: You do not need to install anything on the browser to use this plugin. The following instructions are for the administrator who installs the plugin on the server where TWiki is running.

• Download the ZIP file from the Plugin web (see below)

• Download the ZIP file from the Plugin web (see below)
• Unzip GnuPlotPlugin.zip in your twiki installation directory.
  Content:

  File:	Description:
  data/TWiki/GnuPlotPlugin.txt	Plugin topic
  data/TWiki/GnuPlotPlugin.txt,v	Plugin topic repository
  lib/TWiki/Plugins/GnuPlotPlugin.pm	Plugin Perl module
  lib/TWiki/Plugins/GnuPlotPlugin/Plot.pm	Perl module responsible for rendering the plot area
  lib/TWiki/Plugins/GnuPlotPlugin/PlotSettings.pm	Perl module responsible for managing the settings

• In /lib/TWiki/Plugins/GnuPlotPlugin/Plot.pm look for the following line and update the paths to fit your environment:
  # Update $gnuplotPath, $gnuplotHelperPath and $execCmd to fit your environment
  

Planned improvements

• TWiki compatible syntax for using datafiles from any topic.
• Form based editing of plot settings to make it easier for users that are not familiar with GnuPlot?

Plugin Info

Related Topics: TWikiPreferences, TWikiPlugins

-- TWiki:Main.AbieSwanepoel - 27 Jan 2006