Questions tagged [numpy]
NumPy is the fundamental package for scientific computing with the programming language Python.
765 questions
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A Rubik's Cube game in Python
I implemented this Rubik's Cube game in Python, using Canvas and Context2d for user interaction. This was mainly an exercise in &...
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Half-hexagon neighbour identification under (novel) hierarchical hexagonal grid
Context & Background
Please let me remind you that this project may involve original research; it is important to remember that all content on this site is subject to CC BY-SA 4.0. It is a breach ...
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backward induction algorithm computation
Is there a way to significantly speed-up this code?
I'm solving a dynamic programming model using a backward induction algorithm. A crucial step is to calculate the current-period value function (VF), ...
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numpy array/item handling functions
Recently I have been using numpy arrays, which have great utility via their broadcasting methods.
I am attempting to write a useful public facing library, and this ...
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Correctly sum pixel values into bins of angle relative to center
A quick way to try to do this would be to use scipy.ndimage.map_coordinates, mapping radius to one axis of a rectangular array, and angle to the other, then summing along the radius axis.
But, I think ...
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Implementing a joint differential equation and eigenvalue solver
I've written a Python script to solve a system of coupled differential equations and then use the results to solve an eigenvalue problem. The full problem is:
\$\frac{d^2}{dr^2} K(r) = \frac{K(r)}{r^2}...
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Srivastava multivariate Fox H function in MATLAB
I was trying to rewrite the Python code in MATLAB.
The result is consistent.
But, the MATLAB code is so slow. Any help would be appreciated.
Ref python code link
The MATLAB code written by me is as ...
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Intersect two arrays in python
I have two unidimensional numpy arrays in python, gs and ni. I want to intersect them but preserving the order in gs.
When they have high cardinality this operation becomes so costly. Is there any ...
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Infinite 2d block world (2d minecraft) with chunk system, physics and slower loading
Follow up from this question. I have added a slower loading system that allows the main game to run faster but I still get under 30 fps with caves even if I allow the player to outrun the loading. I ...
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Function that returns activation function, as well as its derivative
I have the following function that returns one of several functions along with their derivative for training neural networks.
Can this function be improved and made more pythonic in any way?
Are there ...
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How do I speed up this simulation program
This is a program to solve a differential equation numerically using Euler method. As of now, it is very slow, and I need to run 10000 Monte Carlo simulations.
The differential equation is called ...
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Alternatives to iterrow loops in python pandas dataframes
I have a piece of code to calculate price sensitivity based on the product and its rating.
Below is the original data set with product type, reported year, customer’s rating, price per unit, and ...
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Building Multi Period Linear Programming Matrices
I'm solving a linear programming problem, made of many small problems with some common shared constraints, meaning that they are all together.
Each individual unit has constraints unique to the unit ...
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Finding specific promotions from two columns [closed]
I'm trying to build a function that identifies those who are promoted into a list of jobcodes, or are promoted within that list of jobcodes.
Initially I was using ...
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