Re: increase resolution of GIF figures

[Glenn Carver <Glenn.Carver@xxxxxxxxxxxxxxxx>]

At 2:41 pm +0800 27/7/01, gaorz0 wrote:
>Hi, Ferreters
>
>Does anyone know how to increase resolution of GIF figures to 600dpi?
>
>Thank you in advance.
>
>Gaorz
>

One technique I have used in the past is to make GIF figures at 75dpi 
but make the window very large. Then I use an image processing 
package like photoshop to convert to 150dpi but with a smaller image 
size to preserve the detail.  I have found that 150dpi gives 
acceptable quality when printing. Some document processing packages 
will do this for you automatically when you import the images 
(FrameMaker is one example). Only once when I put some images to a 
film recorder did I use 600dpi and the experience was not pleasant as 
the gif filesizes were enormous and difficult to handle.

  Glenn

-- 

Dr. Glenn Carver, Senior Research Associate,
Centre for Atmospheric Science, Chemistry Dept., Cambridge University, UK
mailto:Glenn.Carver@atm.ch.cam.ac.uk   http://www.atm.ch.cam.ac.uk/~glenn/

          "I never think of the future, it comes soon enough"
                          - Albert Einstein