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C++ API

: resize (x, m)

: resize (x, m, n, …)

: resize (x, [m n …])

Resize x cutting off elements as necessary.

In the result, element with certain indices is equal to the corresponding element of x if the indices are within the bounds of x; otherwise, the element is set to zero.

In other words, the statement

y = resize (x, dv)

is equivalent to the following code:

y = zeros (dv, class (x));
sz = min (dv, size (x));
for i = 1:length (sz)
 idx{i} = 1:sz(i);
endfor
y(idx{:}) = x(idx{:});

but is performed more efficiently.

If only m is supplied, and it is a scalar, the dimension of the result is m-by-m. If m, n, … are all scalars, then the dimensions of the result are m-by-n-by-…. If given a vector as input, then the dimensions of the result are given by the elements of that vector.

An object can be resized to more dimensions than it has; in such case the missing dimensions are assumed to be 1. Resizing an object to fewer dimensions is not possible.

See also: reshape, postpad, prepad, cat.

Package: octave