Extend a matrix by interpolating zeros
I am trying to implement a python code to extend a matrix in such a way as given below: Given Matrix: 1 2 3 4 Now I want to convert it to the following: 1 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 I am trying the same for a matrix of the dimensions 60x80. I tried out numpy.insert(). But for larger matrix I am not able to apply the same thing(as it becomes too much hardcoding). So need some suggestions to do such interpolation.
You can use the step part of the slice to achieve this, if you preallocate yourself a result repeat = 3 result = np.zeros((arr.shape*repeat, arr.shape*repeat)) result[::repeat,::repeat] = arr
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