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Re: [ferret_users] Limitation of gif pixel?

Thanks for your suggestion.
I know the ps file maybe the best solution for this kind of application.
But if I try to produce a series of 2d time series plot,
gif file naming seems easier than ps file, like
ferret -batch test1_1.plt
Fprint test1_1.plt
ferret -batch test1_2.plt
Fprint test1_2.plt

2009/11/6 Ansley Manke <Ansley.B.Manke@xxxxxxxx>
Hi -
Yes, there is an upper limit for gif images, and I agree with Ryo that using postscript is the way to get a high-resolution plot.  Here's a past message with some details about making a large postscript image.



Ryo Furue wrote:
Hi Dan,

| I try to produce a high resolution gif file (say 1200*1200) with
| set_pixel_size.jnl script.
| Some weird thing happen,
| if I control size below 900, the actual pixel size will increase with
| setting, like 400*400 and 800*800,
| the pixel size are about 382*382 and 756*756.
| However, if I increase size above to 900*900 (or 1200*1200),
| the actual pixel size of gif is all the same (about 856*856) with above to
| 900*900 setting.
| | The gif is produced with ferret normal mode, and I can see the window size
| increase until about 900*900.
| Could this problem cause by monitor resolution or graphic card limitation?

I don't know the answer to your question as it is.
But, I suggest an alternative; I thought you might
want first to generate an EPS file and then to convert
it to a high-resolution GIF, PNG, etc.

This method is potentially more flexible.  For example,
suppose you want a publication-quality image.  Then you
would need 600dpi or so.  That means that if your original
image is 3 inch by 3 inch, your GIF file would be 1800 pixels
by 1800 pixels.  That's too large for an ordinary computer
monitor.  Moreover, I can imagine that the windowing system
(in our case, the X Window) may have a limitation in the size
it can accommodate.  (You might be actually hitting such a


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