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Re: Resolution of GIF Image



Hi Al,
It sounds like we're due for an FAQ on this topic!

SET WINDOW/SIZE is always relative to the size of the output device,
and if you specify a size that's too large, Ferret resets it to the display size.
But, you can get larger plots with PPL SIZE and PPL AXLEN
commands, and use the gksm2ps option to increase the size of the
postscript output.  Here is a recent message about this:

http://ferret.pmel.noaa.gov/Ferret/Mail_Archives/fu_2003/msg00128.html

Ansley

"Albert J. Hermann" wrote:

Hi Ansley and group,

There seem to be some intrinsic limits to this; if I try to make a plot (either postscipt or gif) with

set win/siz=2

it is in fact no bigger than the one I get with

set win/siz=1.5

Is there a way to override whatever limits ferret is placing on the size of the output? It would actually be very useful in some situations to make a huge gif (say 10 times the size of a typical desktop).

-Al Hermann

Ansley Manke wrote:

Hi Rong,
Here are a couple of ideas that will help you.  (Search the Ferret
Users list Archives for the words "resolution" and "gif" for older
discussions of this)

1) Start Ferret with the -gif command line switch, and either use
the command SET WINDOW/SIZE= or call the script set_pixel_size,
to make the window larger.
yes? go/help set_pixel_size         ! See information about this script

There is an FAQ on how to get a desired size for a gif image, at
http://ferret.pmel.noaa.gov/Ferret/FAQ/graphics/gifsize.html

2) Use Ferret to produce a postscript plot and use a tool such as xv, or
programs like Adobe Illustrator, Macromedia Freehand, or Transverter Pro
to read the ps file and convert it into a format that you can work with.  (We
do not endorse these or any particular application.)

Ansley Manke

Rong wrote:

Hi, Ferreters
I'm facing a problem that the resolution of the output GIF image is too low thereby could not be printed clearly.So my question is that is there any way to specify the resolution or pixels of an GIF image? Thank you in advance!

Rong
2003-04-01

  ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             Name: bb.gif
   bb.gif    Type: GIF Image (image/gif)
         Encoding: base64

--
Ansley Manke  Pacific Marine Environmental Laboratory  Seattle WA  (206)526-6246




--
Ansley Manke  Pacific Marine Environmental Laboratory  Seattle WA  (206)526-6246
 


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