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MathGroup Archive 2007

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Re: 2D interpolation

  • To: mathgroup at smc.vnet.net
  • Subject: [mg72976] Re: 2D interpolation
  • From: Peter Pein <petsie at dordos.net>
  • Date: Sat, 27 Jan 2007 05:53:40 -0500 (EST)
  • References: <200701251211.HAA21017@smc.vnet.net> <epcnsb$88l$1@smc.vnet.net>

Jouvenot, Fabrice schrieb:
> Thanks all for your different answers.
> 
> As I still cannot do what I want to, I finaly explain you everythings
> because my first exemple wasn't a representative one ;)
> 
> So I have a function f[x,y] (0 < f <1 increasing and continuous)
> It is a complicate function where y is the integral min limit.
> Whatever, what I want is to have a fat answer to the question, for a
> given f[x,y] and x, what is the y ?

and FindRoot[f[givenx,y]==givenf,{y,miny,maxX}] doesn't work?

I do not understand the occurance of maxX in this context see below.

> (my function is a continuous and increasing function, so there is only
> one answer to that question).
> 
> So what I want to do is to have a loop on x (between minx and maxx) and
> on y (between miny and maxX !!!) to have a list of points.
...

> Someone proposed me to use
> http://www.imtek.uni-freiburg.de/simulation/mathematica/IMSweb/imsTOC/Di
> fferential%20Equation%20Systems/Utilities/InterpolationDocu.html
> It seems to do what I want, but... First it means every people I worked
> with will have to instal it, and second I tried to use it, but I failed
> (ok I am certainly not very good).

strange... at least the parts of the IMS-Package which have been used by me
yet work ob Win2k (Mathematica 5.1) and Linux (Mathematica 5.2)

> 
> You know everythings,

I wish, I did! ;-)

> Thanks,
> 
> Fabrice.
> 


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