I'm doing row reduction on 3 dimensional ndarray (KxMxN), i.e., taking all values of a column and use a reduce function to produce a scalar value; eve...

First I compute a square in the IDLE shell of Python 3.12.0: >>> x = 123456 >>> x**2 15241383936 This agrees with my TI-89. Now I compute what I woul...

I have the following array x: x = np.array([[ 0. , 1. , 0.47351264, 2. ], [ 2. , 3. , 0.65425345, 2. ...

Given a numpy array such as the one below, is it possible to use vectorization to return the associated value in column HHt without using a for loop? ...

For my scientific experiments, I usually seed using: rng = np.random.Generator(np.random.PCG64(seed)) which for the current numpy version is equivalen...

My task is as follows: Each rows of the labels represents students id who received awards from a certain competition. Each competitions have different...

I am wondering the following: I have a 10x10x3 and a 1000x1000x3 numpy array. I want to check if the smaller array can be found within the bigger arra...

How do I extract the coefficient vector from a numpy polynomial? In Python, when using the numpy package to construct a polynomial, how do I extract t...

I need to find first indices of the N largest values of a numpy array without sorting in-place. Examples: 1) Find indices of 2 largest values in an ar...

I need to generate a matrix, say A, and the element of this matrix, say a_{ij}=(x_i,y_j) represents the coordinate of this point. I need the coordinat...

I need to solve a differential equation using solve_ivp() which works with numpy arrays. Some of the functions in by model are defined implicitly, so ...

I have a 2D array of an image (slice). The array dimension is (224, 224) and when I read it as an image as shown below, the image mode is shown as "F"...

In Python (Numpy) there is a np.choose function, that constructs an array from an index array and a list of arrays to choose from. Simple example (an...

Let's say I have a dataframe that has a column named mean that I want to use as an input to a random number generator. Coming from R, this is relative...

When I convert a numpy array to tensor and change the numpy in differnet ways some change the tensor and some not. it is sample: in this code: array =...

Data: import numpy as np d = {"a": 10, "b": 11, "c":12} print(d) # This gives {'a': 10, 'b': 11, 'c': 12} Problem: So we try to obtain the index of ...

I have a numpy array (a_array) and I need to compare each element with the elements in the same position in b_array and c_array, returning the lower o...

I am writing Python code that takes in a .csv file and uses the data in it to create graphs. I am using numpy.loadtxt to accomplish this. The beginnin...

I have a Python code containing the following lines: # Poisson model lambda_param = 3.0 x_model = numpy.linspace(0, 10, num=11, dtype=int) y_model =...

I have 2 arrays: arr1 =np.array([10, 20, 15, 0, 45, 100]) arr2 =np.array([0, 3, 1, 6, 0, 0]) I want to get the sum of those elements from arr1 w...

How can I prepopulate while initializing numpy array with fixed values? I tried generating list and using that as a fill. >>> c = np.empty(5) >>> c ar...

I have a 3D numpy array with shape=(50, 50, 50) which I would like to rotate around center, using a rotation matrix R. I am trying to do this by using...

How to append two arrays in NumPy without flattening? I tried changing axis. >>> h = np.array([]) >>> g = np.array([2,4]) >>> i = np.array([6,9]) >>> ...

def chi2_distance(a,b): d=1-(np.dot(a,b)/(norm(a,axis=1)*norm(b))) return d a and b are float32 and have max 8 decimals. but i want...

I made a simple function in python and I would like to use it now with numpy arrays. The function has an argument with a default value that can theref...