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From: Alvaro Canivell on 10 Feb 2010 10:00
I do not quite understand what kind of function your are handling:

z = f(x,y) ?
v = f(x,y,z) ?

What are the dimmensions of x, y, and z ? (and v if it applies)

In any case, up to some extent, it is normal that you get NaN in certain areas, as your experimental data may not span over the complete range. As they said in this thread already, outside of the surface/volume of this experimental data it is impossible to interpolate, thus NaN is returned as a value

"Pepe Galvez" <maica_capdevila(a)yahoo.es> wrote in message <hfuu9b$mk8$1(a)fred.mathworks.com>...
> Hi,
>
> I am using Matlab version 7.0. I want to do an interpolation between some experimental data (Voff, Ioff and Eoff) and simulated values (Vce and Ic).
>
> Voff, Ioff and Eoff are (4 x 4 double)
> Vce and Ic are (1 x 201)
>
> I apply ZI = griddata (Voff,Ioff,Eoff,Vce,Ic,'linear');
>
> but I obtain ZI with half of NaNs
>
> What am I doing wrong?
>
> Thank you
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