From: Tim Hunter <cyclists@...>
Date: 2004-02-04T09:35:06+09:00
Subject: Re: Image conversion ...

On Tue, 03 Feb 2004 18:57:21 -0500, Useko Netsumi wrote:

> Thanks Ara, I'll get Rmagick and try them out.
> 
> "Ara.T.Howard" <ahoward@fattire.ngdc.noaa.gov> wrote in message
> news:Pine.LNX.4.44.0402031119350.29981-100000@fattire.ngdc.noaa.gov...
>> On Tue, 3 Feb 2004, Tim Hunter wrote:
>>
>> if you have image magick installed you can also simply
>>
>>   mogrify -size 50x50 image.jpg
>>

Using RMagick, the Ruby equivalent to this command is:

require 'RMagick'
include Magick

img = Image.read("image.jpg").first
img.change_geometry("50x50") { |cols, rows|
	img.resize!(cols, rows)
	}
img.write("image.jpg")