runcum(x, [[, axes], width] [, /partial_width])
Running sum of
x along the axes indicated in
axes over numbers of elements picked from
axis is not specified or negative, then
is regarded as a one-dimensional array. In that case,
width must be scalar.
/partial_width determines handling at the edges: if it is set,
then the edges are filled with the partial-width value centered on each
edge element of interest; if it is not set (
/no..) then the edges
are filled with the nearest full-width value.
See also: runsum, smooth