All Questions

I would like to multiply tensors R = {R_1, R_2, ..., R_M} and X = {X_1, X_2, ..., X_M} where R_i and X_i are 3×3 and 3×N_i matrices, respectively. How can I make maximum use of NumPy functionalities ...

Consider a 3D array array_3d with shape (3, 2, 2): array_3d = np.array([ [[ 0, 1], [ 2, 3]], [[ 4, 5], [ 6, 7]], [[ 8, 9], [10, 11]] ]) array_3d.shape = (3, 2, 2) ...

Given a 2D Numpy array, I'd like to be able to pad it on the left, right, top, bottom side, like the following pseudo-code. Is there anything like this already built into Numpy? import numpy as np a =...

I need some help in understanding the equations involved in finding the index of an element in an ndarray. I have been reading the Book "Guide to NumPy" by Travis A Oliphant. Link to the ...

I am trying to compute the following function: geo-decay-function: in numpy, has to be vectorized. The catch in this case is that it should work for multidimensional inputs. E.g., x having dimensions ...

I have a 3D numpy array of shape (8, x, y) where x and y can be any integer value from 0 to ~500. These 8 "layers" of shape (x, y) each represent a possible z value at a specific point on a ...

I am trying to rewrite an numpy function such that it can deal with 2d and 3d inputs. Consider the following code: import numpy as np def adstock_geometric(x: np.array, theta: np.array): x_decayed ...

I always get find myself in state of confusion when dealing with a multi-dimensional array. Imaging having the following array of arrays, where each array contains feature importance scores (3-...

I am considering arrays of shape (n,2) for arbitrary n. I want to check whether the two-element sub-arrays match. As an example: import numpy as np a=np.array([[1,0],[2,0]]) b=np.array([[1,0],[2,0]]) ...

I have two matrices A and B of dimensions (n_m, n_u) and (n_m, n). I want a 3D matrix with dimensions (n, n_m, n_u) such that the first column of B is multiplied (element-wise) with every column of A ...

In the numpy documentation of subclassing ndarray here. It is said that ndarray.__new__, passes __array_finalize__ the new object, of our own class (self) as well as the object from which the view ...

I'm new to numpy and I'm trying to create add a new row. I'm reading that I just need to specify the axis. Right now I'm just testing import numpy as np arr = np.array(['1', '2', '3']) print(np....

Problem I wanna make size undefined 2D empty numpy array and append values. my try import numpy as np import randrom unknown = random.randint(2, 666) #arr = np.array([np.array([])]) #arr = np.empty((...

I am trying to replace all the values of the border of my n-dimensional array by False. So far, I have seen that numpy provides np.pad that allows me to grow an array in all dimensions with an ...

I am attempting to index a stacked 3-D Numpy array (named stack) by a group of 2-D indices contained inside of a separate Numpy array (named piece). The separate array contains several groups of 2-D ...