I’m currently trying to replace values AxBxC matrix with given array of indexes and corresponding values.
for example I have an index array [[0,1], [1,0], [3,4]] for a 6x6x4 matrix, with corresponding value [[1,1,1,1],[2,2,2,2],[3,3,3,3]]. I’d like to replace the values in the 6x6x4 matrix at [0,1,:], [1,0,:], and [3,4,:] with [1,1,1,1], [2,2,2,2] and [3,3,3,3].  extracting is possible with given indices, but not the other way around it seems