get_index_range

jwst.wfs_combine.wfs_combine.get_index_range(offset, length)

Get the initial and final indices for the given offset and array length.

• For offset less than or equal to 0:

  • i = 0

  • f = length - abs(offset)

• For offset greater than 0:

  • i = offset

  • f = length

Parameters:

offsetint

Offset

lengthint

Length of 1D array

Returns:

initial_1, final_1, initial_2, final_2int

Initial and final indices for the given offset