From: Nuralanur@...
Date: 2006-06-07T07:05:11+09:00
Subject: Ruby and Gnuplot under Windows (was: Re: External application under Windows)

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Dear Chris,
 
thanks for pointing me to ruby gnuplot. However, I need to
set up a connection under Windows XP (in addition to one
in Linux).
Now, in the manual of Ruby Gnuplot,
it says:
 
 
Gnuplot.open  
Instantiates a new Gnuplot process. The path to the executable is  determined 
on a Unix or MacOSX system using the which command. Windows users,  I have no 
idea what to do. If a block is given to the function the opened  process is 
passed into the block. This mimics the most common usage of the  File.open 
method. 


I want to combine Gnuplot support to an FXRuby application, and  
unfortunately,
this always crashes with Segfault when I run it in Cygwin, which used to be 
my way of running Ruby and indeed anything on Windows...
So I tried to install the ruby gnuplot gem (v 2.2) using the gem installer  
of the one-click
installer, and tried this test file:
 
 
require 'rubygems'
require 'gnuplot'
 
Gnuplot.open do |gp|
Gnuplot::Plot.new( gp ) do |plot|

plot.xrange "[-10:10]"
plot.title  "Sin Wave Example"
plot.ylabel  "x"
plot.xlabel "sin(x)"

plot.data << Gnuplot::DataSet.new( "sin(x)" ) do  |ds|
ds.with =  "lines"
ds.linewidth = 4
end

end

end

Now, the application starts, but just doesn't do anything - there is
no error message or warning, and no output.
Does anybody use Ruby Gnuplot and the Ruby from the one-click
installer (latest version) successfully ?
 
Thanks,
 
Best regards,
 
Axel


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