Section: Optimization and Curve Fitting
x coordinates and a
corresponding set of y values, performs simple linear
interpolation to a new set of x coordinates. The general syntax
for its usage is
zi = interp2(z,xi,yi)
where xi and yi are vectors of the same length. The output
vector zi is the same size as the input vector xi.
For each element of xi, the values in zi are linearly interpolated
by default. Interpolation method can be selected as:
zi = interp2(z,xi,yi,method)
Default interpolation method is 'linear'. Other methods are
'nearest', and 'cubic'.
For values in xi, yi that are outside the size of z,
the default value returned is NaN. To change this behavior,
you can specify the extrapolation value:
zi = interp2(z,xi,yi,method,extrapval)
The z and xi,yi vectors must be real, although complex types
are allowed for z.