From: Joel VanderWerf <vjoel@...>
Date: 2006-05-18T04:21:36+09:00
Subject: Re: ruby/gnuplot on windows

Jon Dean wrote:
> Joel VanderWerf wrote:
>> I've never used this particular ruby-gnuplot library, but the following
>> works for me with gnuplot 4.0:
>>
>> C:\prj\gnuplot\bin>irb
>> irb(main):001:0> gp = "pgnuplot"
>> => "pgnuplot"
>> irb(main):002:0> pi = IO.popen(gp, "w")
>> => #<IO:0x2c20c00>
>> irb(main):003:0> pi.puts "plot sin(x)"
>> => nil
>>
>> The plot window stays up and lets you manipulate it with the mouse. Just
>> keep the pipe open.
>>
>> One small advantage of windows gnuplot is that if you go to the window
>> menu (?) in the upper left corner, and select "options", you can print
>> and do other neat stuff.
>>
>> My experience was that the -persist flag wasn't necessary on windows.
> 
> What download of gnuplot 4.0 for windows did you use?  I used the 
> gp400win32.zip which didn't have a bin directory.  I ran the same 

Odd, gp400win32.zip is what I downloaded yesterday, and it does seem to
have a bin dir. This is what it unpacks to:

bin   contrib    demo  install  readme      README.Windows
bugs  Copyright  docs  news     readme.1st

> command through irb and it works like you said because its in 
> interactive mode.  I also don't appear to have a window menu.  Is that 
> in the graph window or the command line window?  Maybe the download 
> wasn't good.  Anyway, I would like to run scripts through the command 
> line and not enter it each time through irb.  That way, the persist flag 
> becomes necessary but I can't get it to work.  Thanks for the help.

Oh, you mean you want the gnuplot window to outlive the ruby process
that sent it commands? I don't know of any way to do that on windows,
short of writing a socket-listening wrapper around pgnuplot (drb would
be helpful).

The window menu I'm talking about should be in the upper left corner of
the plot window.

-- 
      vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407