Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
NCTM or The Math Forum.
|
|
|
Math Forum
»
Discussions
»
sci.math.*
»
sci.math
Notice: We are no longer accepting new posts, but the forums will continue to be readable.
Topic:
Inverting a graphic
Replies:
3
Last Post:
Jan 25, 2013 7:42 AM
|
 |
|
|
|
Re: Inverting a graphic
Posted:
Jan 24, 2013 1:24 PM
|
|
On 24.01.2013 17:11, fc3a501@uni-hamburg.de wrote:
> I have a decades old spectrum...on paper. Even scanning that
> stuff and running it through all available filters to get out
> the lining was a pain in the %&$§. Now comes the next problem:
> Its intensity vs. nanometers, instead of wave numbers...and
> for all decent applications you need an energy-proportional
> scale.
> Obviously, not even a super duper graphic editor has a "convert
> x,y to x,1/y pic" button. (?!)
Maybe not. But there are stand-alone programs dedicated to that
particular task. It's basically a variation of optical character
recognition, thus sometimes referred to as optical plot recognition.
Some programs that do this are even available for free, e.g.
http://plotdigitizer.sourceforge.net/
http://www.frantz.fi/software/g3data.php
|
|
|
|
