Interpolation for 3-D gridded data in meshgrid format
returns
interpolated values of a function of three variables at specific query
points using linear interpolation. The results always pass through
the original sampling of the function. Vq
= interp3(X,Y,Z
,V
,Xq,Yq,Zq
)X
, Y
,
and Z
contain the coordinates of the sample points. V
contains
the corresponding function values at each sample point. Xq
, Yq
,
and Zq
contain the coordinates of the query points.
also
specifies Vq
= interp3(___,method
,extrapval
)extrapval
, a scalar value that is assigned
to all queries that lie outside the domain of the sample points.
If you omit the extrapval
argument for queries
outside the domain of the sample points, then based on the method
argument interp3
returns
one of the following:
The extrapolated values for the 'spline'
and 'makima'
methods
NaN
values for other interpolation methods