Problem: screen and graphics file aspect ratios are different

Jennifer Adams jma at COLA.IGES.ORG
Mon Mar 17 07:43:08 EDT 2008

You can control the aspect ratio of the image output with the xN and
yN options to the printim command, like this:
ga-> printim output.png x500 y500

After a bit of fooling around, I am unable to get an .eps plot that
looks substantially different from what is drawn on the screen.
You'll have to submit a GrADS script with the commands you're using
for me to comment any further.

On Mar 14, 2008, at 3:55 PM, Tero Siili wrote:

> Dear fellow GrADSers,
> I sent the message below to this list a couple of weeks ago, but have
> not seen any reaction whatsoever to it. Does that imply that no-one
> else has observed the same behaviour? Would someone out there be
> willing to test this to see, whether the behaviour can be reproduced?
> Tero Siili
> Begin forwarded message:
>> From: Tero Siili <tsiili at>
>> Date: 27 February 2008 12:31:03 GMT-05:00
>> Subject: Problem: screen and graphics file aspect ratios are
>> different
>> Hi!
>> In short:
>> 1) I have a lat-lon grid whose aspect ratio (measured in degrees or
>> grid points) is 1
>> 2) I am able to produce a contour plot onto the screen with the
>> correct aspect ratio
>> 3) When I save the graphics to a file, the shape of the plot changes
>> to a rectangle
>>    (aspect ratio <> 1) from the square (aspect ratio = 1) on the
>> screen
>> I have tried both varea and parea and they help for the screen. The
>> saved graphics problem persists with both printim as well as gxeps
>> commands.
>> Any pointers or advice as to what might be causing this behaviour and
>> how could one give the aspect ratio a fixed value for both screen and
>> saved-to-file graphics?
>> Tero Siili
>> SOHO Science Operations Coordinator

Jennifer M. Adams
4041 Powder Mill Road, Suite 302
Calverton, MD 20705
jma at

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