jfbourdon

from qgis.PyQt.QtCore import QCoreApplication
from qgis.core import *
from qgis.utils import pluginMetadata
from PyQt5.QtCore import *
import processing
from processing.core.Processing import Processing
from qgis.analysis import QgsNativeAlgorithms

import os
from collections import deque

jfbourdon

def _zvalue_from_index(arr, ind):
	"""private helper function to work around the limitation of np.choose() by employing np.take()
	arr has to be a 3D array
	ind has to be a 2D array containing values for z-indicies to take from arr
	See: http://stackoverflow.com/a/32091712/4169585
	This is faster and more memory efficient than using the ogrid based solution with fancy indexing.
	"""
	
	# get number of rows and columns
	_,nR,nC = arr.shape