Popular recipes tagged "meta:requires=math"

Uno (Text-Based) (Python)

2017-07-15T00:46:59-07:00

Python recipe 580811 by Brandon Martin (artificial_intelligence, cards, game, text_game, uno).

A text based recreation of the classic card game featuring functional AIs to play with. Some rules have been modified. User interface is text based, non-curses, using only simple python commands to draw it.

Auto differentiation (Python)

2016-08-07T22:02:10-07:00

Python recipe 580610 by Raymond Hettinger (autodifferentiation, calculus, descent, gradient, math, optimization, vector). Revision 5.

Directly computes derivatives from ordinary Python functions using auto differentiation. The technique directly computes the desired derivatives to full precision without resorting to symbolic math and without making estimates bases on numerical methods.

The module provides a Num class for "dual" numbers that performs both regular floating point math on a value and its derivative at the same time. In addition, the module provides drop-in substitutes for most of the functions in the math module. There are also tools for partial derivatives, directional derivatives, gradients of scalar fields, and the curl and divergence of vector fields.

Hopfield Artificial Neural Network (C++)

2016-07-03T21:58:49-07:00

C++ recipe 580688 by Jay baller (ai, algorithm, algorithms, artificial_intelligence, neural_network).

(Discrete (Binary)) Hopfield Artificial Neural Network (ANN).

For more info see:

http://en.wikipedia.org/wiki/Hopfield_net

http://www.scholarpedia.org/article/Hopfield_network

Projectile Motion (Python)

2016-04-08T01:42:01-07:00

Python recipe 580638 by Tage Burnett (math, physics, python).

This program calculates the characteristics of a projectile in a vacuum at several different locations in our solar system.

10 lines for a beginner to try out the Spyder IDE for python programming (Python)

2015-09-18T15:04:09-07:00

Python recipe 579100 by mai3a (error, snippet, spyder, stuffthatworks).

This python code generates no lint errors and just print out a few numbers.

Useful if you use the Spyder IDE for the first time, which provides NOTHING to get you started.

python EMI calculator (Python)

2015-07-29T18:20:36-07:00

Python recipe 579086 by Emil george james (calculator, emi, python).

EMI Calculator is used to calculate Equated Monthly Installment(EMI) for Home Loans/Housing Loans,Car Loans & Personal Advantages: What all this EMI Calculator does?

. The Instant calculation of Loan EMI , Total Interest Payable and Total Payments to be done. . This can be used as EMI Calculator for Banks like HDFC, ICICI, SBI, AXIS etc. . This can be also used for calculating Home loans, Personal Loan, car loans , credit card, LIC loan

How to calculate the EMI?

The well known formula for calculating EMI is:

Formula for EMI calculation

[Formula] EMI = [(p*r/12) (1+r/12)^n]/[(1+r/12)^n – 1 ] where p = principal amount(primary loan amount) r = rate of interest per year n = Total number of Years

output:

https://emilgeorgejames.wordpress.com/2015/07/29/python-emi-equated-monthly-installment-calculator/

for more python recepies visit :https://emilgeorgejames.wordpress.com/

Garden Requirements Calculator (Python)

2014-09-17T22:04:36-07:00

Python recipe 578935 by Ethan Hann (calculator, garden, math).

This program takes input from the user and determines the amount of gardening materials needed for a garden. The garden is a perfect square. The four outer flowerbeds are congruent semicircles and the central flowerbed is a perfect circle. Everything else inside the garden is considered fill: stone, mulch, or other fill material.

Analog Clock (Python)

2014-05-14T20:53:39-07:00

Python recipe 578875 by Paulo Cavalcanti (clock). Revision 3.

A python-tkinter analog clock

Perfect Square Checker (Python)

2014-09-10T02:21:27-07:00

Python recipe 578931 by Ethan Hann (check, checker, math, mathematics, root, square).

This program will take input from the user and either check if a number is a perfect square or square a number, depending on user's choice.

Rotatable Tetrahedron (Python)

2014-05-14T21:03:40-07:00

Python recipe 578876 by Paulo Cavalcanti (rotatable, tetrahedron). Revision 2.

Draws a 3D tetrahedron and allows a user to rotate it (mouse left button and wheel).

Gimp Paperwhite Scriptfu (Python)

2014-03-25T10:17:07-07:00

Python recipe 578857 by Alfe (gimp, image_processing, paperwhite, plugin, script, scriptfu).

This Gimp-plugin (written in Python) changes a photograph of a paper document so that the paper background appears white again without overly lighting the text.

Public Key Encryption (RSA) (Python)

2013-12-27T06:43:59-08:00

Python recipe 578797 by Mohammad Taha Jahangir (encryption, inverse, multiplicative, primality_testing, primes, publickey, rsa). Revision 3.

Simple code to create and use public/private keypairs. Accompanied by a rudimentary encoder.

FreshFish (Python)

2013-12-29T15:38:33-08:00

Python recipe 578800 by Justin Shaw . Revision 2.

FreshFish is a function decorator for functions with no arguments (hardware query).

The first time the function is called, the wrapper caches the result (the fish). Subsequent calls to the wrapped function simply return the cached result as long as the fish is still fresh. When the fish goes stale, FreshFish calls the underlying function again for FreshFish.

I used this on a BeagleBone project to monitor heart rate, speed, and cadence.

Determine bytes needed to hold integer (Python3) (Python)

2013-11-03T18:35:18-08:00

Python recipe 578766 by teddy_k (bytes, conversion, integer).

Convenience function to determine the number of bytes needed for a specified integer (split into multiple lines for clarity's sake ... could just as easily be a one-liner).

If this is already a defined function within Python, please let me know--a quick web search turned up nothing.

de Polignac's Formula (Python)

2013-08-10T03:40:02-07:00

Python recipe 578632 by Samuel James Erickson (factorial, n, prime, primes). Revision 4.

Obtains the total number of factors of p in n! for any prime p.

Convert from decimal to base-n for any positive n less than or equal to 10 (Python)

2013-08-09T05:56:16-07:00

Python recipe 578630 by Samuel James Erickson (binary, decimal, octal).

Takes in any non-negative integer and converts to the desired base-n for 1<=n<=10.

Simple Method to Compute Pi in Python (Python)

2013-06-03T18:06:43-07:00

Python recipe 578547 by Captain DeadBones (pi, python).

This script was written for an article I wrote about computing Pi with Python. For more information How to Compute Pi in Python

Complex Methods to Compute Pi in Python (Python)

2013-06-03T18:08:19-07:00

Python recipe 578548 by Captain DeadBones (decimal, pi, python).

This script was written for an article I wrote about computing Pi with Python. This module uses the Decimal library. For more information How to Compute Pi in Python

Archimedes Method for PI (arbitrary precision) (Python)

2013-03-02T21:56:42-08:00

Python recipe 578478 by Bjorn Madsen (decimal, math, pi, precision, python3).

The code below incorporates the newly revised python 3.3.0 decimal module to permit arbitrary precision (http://docs.python.org/3/library/decimal.html)

The recipe was originally by FB35 from http://code.activestate.com/recipes/576981-archimedes-method-for-calculating-pi/

Plotting maps with Polar Stereographic projection focused in a region with Basemap (Python)

2012-12-15T11:49:52-08:00

Python recipe 578379 by PG (map, matplotlib, plotting, projections, stereographic). Revision 3.

When plotting maps with either 'npstere' or 'spstere' projections with the Basemap toolkit for Matplotlib, the pole will always be placed in the center of the figure. With this function you can zoom the map to the area of interest by giving the latitude/longitudes coordinates of the bounds.