Plotting vectors #36

Activity

1. rdp commented on Oct 27, 2014

   

   rdp

   on Oct 27, 2014

   Owner

   More actions

   if it gets really impossible you can always just cut a gnuplot "raw" file
   instead of using the gem...for super complex things I do that.

   On Fri, Oct 24, 2014 at 10:07 AM, maasha notifications@github.com wrote:

   I would like to get this example to work using ruby_gnuplot:

   http://stackoverflow.com/questions/16541040/how-do-i-use-gnuplot-to-plot-a-simple-2d-vector-arrow

   However, my attempt is not working. I think the problem is, I don't know
   what Dataset.new does. If this could be fixed, I would like to contribute
   it to the /examples.

   #!/usr/bin/env ruby

   require 'gnuplot'

   data = [
   [0, 0, 0.5, 0.5],
   [0, 1, -0.5, 0.5],
   [1, 1, 1, 0]
   ]

   Gnuplot.open do |gp|
   Gnuplot::Plot.new(gp) do |plot|
   plot.term "dumb"
   plot.output "/dev/stderr"

   plot.data << Gnuplot::DataSet.new(data) do |ds|
     ds.using = "1:2:3:4"
     ds.with  = "vectors filled head lw 3"
   end
   

   end
   end

   —
   Reply to this email directly or view it on GitHub
   #36.
2. maasha commented on Oct 27, 2014

   

   maasha

   on Oct 27, 2014

   ContributorAuthor

   More actions

   Plotting a bunch of vectors should be dead simple. I acknowledge that GNUplot is not easily modelled with Ruby, which is a shame.