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: polyarea (x, y)

: polyarea (x, y, dim)

Determine area of a polygon by triangle method.

The variables x and y define the vertex pairs, and must therefore have the same shape. They can be either vectors or arrays. If they are arrays then the columns of x and y are treated separately and an area returned for each.

If the optional dim argument is given, then polyarea works along this dimension of the arrays x and y.

Package: octave