Python class which adds lower axe indices into the higher axe into numpy ndarray.

• Jaume Mila Bea jaume@westial.com
• Project home: https://github.com/westial/NdArrayIndexer.py

Retrieves the indexes for all axes but last in a multi axes ndarray. Given a ndarray this class returns a new ndarray with each index key as a new item into the last axes (dimension). For this reason if a ndarray of 3 axes is passed by NdArrayIndexer, it will return the same ndarray with new 2 items in the axe 2.

• Python 2.7.3
• numpy 1.9

ndarray = array([[[x1, y1, z1], [xn, yn, zn]], [...]])

indexer = NdArrayIndexer(ndarray)

indexer.run()

ndarray_with coords = indexer.get()

The usage example above returns:

array([[[a1_1, a0_1, x1, y1, z1], [a1_n, a0_n, xn, yn, zn]], [...]])

So in this case the expression below is true:

ndarray[a0_n][a1_n] = [xn, yn, zn]

Check the test files:

• tests/test_NdArrayIndexer_10axes.py
• tests/test_NdArrayIndexer_3axes.py
• tests/test_NdArrayIndexer_2axes.py
• tests/test_NdArrayIndexer_1axe.py (it has no effect with only one axe)
• tests/test_SimpleCV.py

NdArrayIndexer 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.

NdArrayIndexer 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 NdArrayIndexer. If not, see http://www.gnu.org/licenses/.