| Re: digitize a curve from an image [message #21360 is a reply to message #21178] |
Fri, 18 August 2000 00:00   |
Kristian Kjaer
Messages: 58
Registered: June 1998
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Member |
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> Kristian Kjær wrote:
>> I have a gif file (B/W only, no greys or colours) showing a line
>> graph. Now I would like to get hold of the x,y arrays represented by
>> the curve.
>> The coordinate axes are a little skewed in the image
Med Bennett wrote:
> Here is a link to the program I was thinking of -
> http://www.nikhef.nl/user/keeshu/datathief/
Thanks a lot. Looks good; but for some reason it won't display my
images. (3288x2412x2 gif and 8520x6392x2 gif).
Also, I realize, the curve is not a continuous line of pixes (rendered
with dots or dashes, I think), so the program's trace function wouldn't
work. I probably have to use the mouse to define the curve.
So I'm still interested in any pointers.
- Kristian
Kristian Kjær, Physics Dept., Risø Natl. Laboratory, Denmark
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