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NDGRID Generation of arrays for N-D functions and interpolation.
[X1,X2,X3,...] = NDGRID(x1,x2,x3,...) transforms the domain
specified by vectors x1,x2,x3, etc. into arrays X1,X2,X3, etc. that
can be used for the evaluation of functions of N variables and N-D
interpolation. The i-th dimension of the output array Xi are copies
of elements of the vector xi.
MESHGRID X and Y arrays for 3-D plots.
[X,Y] = MESHGRID(x,y) transforms the domain specified by vectors
x and y into arrays X and Y that can be used for the evaluation
of functions of two variables and 3-D surface plots.
The rows of the output array X are copies of the vector x and
the columns of the output array Y are copies of the vector y.
[X,Y] = MESHGRID(x) is an abbreviation for [X,Y] = MESHGRID(x,x).
[X,Y,Z] = MESHGRID(x,y,z) produces 3-D arrays that can be used to
evaluate functions of three variables and 3-D volumetric plots.
For example, to evaluate the function x*exp(-x^2-y^2) over the
range -2 < x < 2, -2 < y < 2,
[X,Y] = meshgrid(-2:.2:2, -2:.2:2);
Z = X .* exp(-X.^2 - Y.^2);
mesh(Z)
MESHGRID is like NDGRID except that the order of the first two input
and output arguments are switched (i.e., [X,Y,Z] = MESHGRID(x,y,z)
produces the same result as [Y,X,Z] = NDGRID(y,x,z)). Because of
this, MESHGRID is better suited to problems in cartesian space,
while NDGRID is better suited to N-D problems that aren't spatially
based. MESHGRID is also limited to 2-D or 3-D.
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