Gnuplot {Tools}

Ideas to go further

• MyCloudTransitionsystem stats (top, du, ls, ...)
  • see Numbers
• ObjectsExoBrain usage stats

From personal use

• with histogram used instead of with boxes
  • e.g.
  • with gnuplot in crontab (with proper permission on the output image and absolute path)
    • should be used for Numbers eventually with inotify instead
• How do I skip data points? in the official FAQ
  • specifying ? as a data value
• set arrow from 0,0 to 1,1 to draw a unidirectional arrow from one point to another
  • cf http://t16web.lanl.gov/Kawano/gnuplot/label2-e.html
• terminal do make a difference on the possible styles
  • e.g. PostScript allow dashed and dotted lines while png or svg do not'
• set noytics and set noxtics to remove tics
  • note that it is probably equivalent to unset xtics/unset ytics
  • used in Path:/pub/illustrations/expressivity_power_curves.png
• set ytics 0,1 to set tics at 0 and 1 value on y axis
• set multiplot and set style line 1 lw 2 linecolor rgb "cyan" with plot [] [] 'tunkrank_data' using 1:2 with lines ls 3 ti "Tunk rank"
  • used in Path:/pub/socialbehaviors/tunkrank_data.plt for Path:/pub/socialbehaviors/tunkranking.png
• set label "TheDarkSideOfGoogle" at 58,"31/08/10" rotate left
  • Info: (gnuplot) label
  • used in Path:/pub/socialbehaviors/ordered_readings.plt for ordered_readings.png
• plotting time series
  • set timefmt "%H:%M"
  • set ylabel "Hour"
  • set xlabel "Session number"
  • set boxwidth 1
  • plot [0:] [] 'morning_p.data' using 1 with boxes
• set label "crontab_listing" at first 336, first 0.05 : add a label at coordinates X,Y relative to the axis values
• note that all commands must be done before the plot command is used
  • duh!
• set terminal png : render in a png format
• set output "MyCurve.png" : output in a file in the current directory
• swimmingbars.plt and runningcurve.plt used for Exercises
• between interactive canvas, Octave, data.gov/DBpedia (SemanticWeb) why one would pay for Wolfram|Alpha with very hard to copy and mashup results?

not so Frequently Asked Questions, LANL

• Draw a Bar-Graph
  • set boxwidth 1
  • plot [] [900:2600] 'swimmingdata' with boxes : use boxes style on the swimmingdata dataset with no specific range on the x axis and a specific range for the y axis

See also

• Graphviz
• Processing
• Programming
• Cookbook.Design

To explore

• Wikipedia:Gnuplot
• gnuplot homepage
• ggplot2 plotting system for R, based on the grammar of graphics
• http://gnuplot-tricks.blogspot.com

Note

My notes on Tools gather what I know or want to know. Consequently they are not and will never be complete references. For this, official manuals and online communities provide much better answers.