MORE ON IMAGE DISPLAY IN RUBY

Ruby is a free, open source, object-oriented programming language. There are many beginner books on Ruby. If you work in the medical or biological fields, you might want to try my book, Ruby Programming for Medicine and Biology.

We have previously described what you need to install to manipulate images in Ruby (ImageMagick, RMagick, and Tcl/Tk). Here is a short Ruby script that shows how to use RMagick (Ruby's interface to ImageMagick) to create and display an image. 

#!/usr/local/bin/ruby
require 'RMagick'
include Magick
f = Image.new(400,400) { self.background_color = "green" }
f.write("green.gif")
require 'tk'
root = TkRoot.new {title "view"}
TkButton.new(root) do
  image TkPhotoImage.new{file "green.gif"}
  command {exit}
  pack
end
Tk.mainloop
exit
The script creates a green square and displays it in a Tk window.

green box in Tk window


Last modified April 22, 2010, by Jules J. Berman