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MathGroup Archive 2005

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Re: another image problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg56986] Re: another image problem
  • From: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>
  • Date: Thu, 12 May 2005 02:32:19 -0400 (EDT)
  • Organization: Uni Leipzig
  • References: <d5sknt$o1g$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,
mak a interpolation function form the data, 
NIntegrate/Integrate it
and search the intersections of the interpolation 
functions.

Regards
  Jens

"sean_incali" <sean_incali at yahoo.com> schrieb im 
Newsbeitrag news:d5sknt$o1g$1 at smc.vnet.net...
> Let's say you have a picture of two overlapping 
> graphs.
>
> You don't have the equations that generated 
> them. but you know the
> graphs is relatively accurate. for example,
>
> http://pg.photos.yahoo.com/ph/sean_incali/detail?.dir=/9264&.dnm=191b.jpg&.src=ph
>
> Now... let's say you wanted to find the area 
> under curve for both
> curves (blue and green) between certain x 
> values...
>
> for example, 425nm <= x <= 475nm , and then 
> 500nm <= x <= 550nm, and
> then 525nm <= x <= 575nm.
>
> is this doable in Mathematica?
>
> thanks In advance for any thoughts.
>
> sean
> 



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