Re: 3D interpolation

Hi Jean-Eric

See tutorials
 -ContourList.C
 -FirstContour.C

see also class TGraph2D and correspondind tutorials.

Rene brun

On Tue, 26 Apr 2005,
Jean-Eric Campagne wrote:

> Dear developpers,
>
> I wander if you can help me in the following task: my final goal is to plot
> Chi2 contours in a 2 dimentions x-y plot.
>
> As a starting point, I have a table of Chi2_ij values for some (x_i, y_j)
> points. The contours are the location of (x,y) points where Chi2(x,y) =
> 10.64 (for definiteness).
>
> My problem is to get the (x,y) location that fullfill the above constraint,
> for that the Chi2 should be evaluated (interpolated) between the different
> (x_i,y_j,Chi2_ij) values.
>
> How ROOT can help me in this double task: 1) perform the interpolation to
> find the (x,y) that Chi2(x,y) = 10.64 and 2) plot the result?
>
> Regards
> J.E Campagne
>
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Received on Tue Apr 26 2005 - 11:21:45 MEST