function collapse

Collapse one axis of an array. All values along the specified axis will be summed up. The resulting array will have one dimension less than the input.

Syntax
result = collapse(IMAGE, AXIS)

Arguments

IMAGE:   A matrix.

AXIS:   An integer number.

Examples
Do a sum of all images in a datacube:
   s = collapse(cube, 3) This is exactly the same as:
   s = cubeavg(cube) * naxis3(cube)

See also
function cubeavg