I have a list: what I would like to do is loop though this list but then change the list. Basically when I loop through nums = [0, 1, 2, 3] nums would need to change to: Is there a way of changing nums like this? I feel like there is a simple solution to this, but I’ve been stumped
Tag: arrays
How to create a numpy 2-D array whose elements depend on elements of two lists already fixed
Example: Let and I would like to create a matrix C of size (5,5) whose elements are where f is a fixed function for example f(x,y) = x*y + x + y which means In the case where c_ij depends on i and j only and does not depend on the lists A and B, we can use np.fromfunction(lambda i,j:
Finding location of subarray in numpy array
I want to find the location of a subarray in an numpy array. For example, if the large array is of shape (10000, 10, 10, 10), namely 10000 arrays of shape (10,10,10) and I want to find the location of the subarray of shape (3,3,3) as follows: So I will know that at the location of n, i, j, k
How to get standard deviation across multiple 2d arrays by cell?
I have 16 2d-arrays, each in a shape of [16000, 16000], which means one array has 256000000 cells. I want to have a std_array that is the standard deviation of each cell in the 16 arrays. I tried something but failed, and my questions are in bold. Here’s my attempt. For example (simplified 3*3 arrays): However, the np.std function only
Cannot Change Individual Elements in an Array
I am trying to make a tic-tac-toe game, and I currently have a 3×3 tiled board grid to represent the game. When a user clicks a square, the program sets board[x][y] to 1. board = [[[0, 0, 0], [0, 0, 0], [0, 0, 0]] Unfortunately, whenever I click a tile, it seems to ignore whatever x value I put; every
How to update key of dictionary inside a JSON file?
This is an example of what’s in my JSON file: How would I change the male’s key (which is 0) and add one using “+=” in python? I wan a command to update the key of male or female. I don’t want to CHANGE 0 into 1, but I want to “+=” to that 0 so that I can update
Does a JS equivalent of Python’s Multiple Variable Assignment exist?
Python has a succinct way of assigning a function with a parameter to multiple variables, done as a one-liner. I would like to know whether JavaScript has the same, or similar way of doing that. I have found several examples describing multiple variable assignments for JavaScript, using multiple assignments and Destructuring. The issue with these methods is that they can,
Why is this array changing when I’m not operating on it?
I have two arrays: And I’m running the foll)owing code: I get the following result: Why are the last elements changed? I don’t see why X is changed by indexing some elements. edit: added np.array Answer Output:
How do I find the highest float from a list?
I have made a program that gets a movie you pick from a list and tells you its directors and rating it also tells you if a movie is the highest-rated. I want the program to do the same thing it is doing but instead of just checking if the title is 5 stars, it checks if the rating is
Creating 3d Tensor Array from 2d Array (Python)
I have two numpy arrays (4×4 each). I would like to concatenate them to a tensor of (4x4x2) in which the first ‘sheet’ is the first array, second ‘sheet’ is the second array, etc. However, when I try np.stack the output of d[1] is not showing the correct values of the first matrix. Answer If you do np.dstack((x, y)), which