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MathGroup Archive 2005

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Re: another image problem

  • To: mathgroup at
  • Subject: [mg56986] Re: another image problem
  • From: "Jens-Peer Kuska" <kuska at>
  • Date: Thu, 12 May 2005 02:32:19 -0400 (EDT)
  • Organization: Uni Leipzig
  • References: <d5sknt$o1g$>
  • Sender: owner-wri-mathgroup at

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


"sean_incali" <sean_incali at> schrieb im 
Newsbeitrag news:d5sknt$o1g$1 at
> 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,
> 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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