# D2O
# Copyright (C) 2016 Theo Steininger
#
# Author: Theo Steininger
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see .
import numpy as np
def cast_axis_to_tuple(axis, length):
if axis is None:
return None
try:
axis = tuple(int(item) for item in axis)
except(TypeError):
if np.isscalar(axis):
axis = (int(axis), )
else:
raise TypeError(
"ERROR: Could not convert axis-input to tuple of ints")
# shift negative indices to positive ones
axis = tuple(item if (item >= 0) else (item + length) for item in axis)
return axis