95 scripts tagged as: [//math]
| Desk Calculator | ||
| desk-calc.r | v:1.3.0 2.5 KB 14 Oct 2004 | A tool for simple calculations. author: Ryan S. Cole |
| Compute the date of Easter day | ||
| easter-day.r | v:1.1.0 1.3 KB 1 Mar 2005 | Just a small function to compute the date of the Easter day.
Can be used to compute other dates related to Easter.
Should be accurate for years starting at 1583 to 2050, and
maybe more. author: Didier Cadieu, but many more |
| Factorial | ||
| factorial.r | 554 bytes 13 Mar 2003 | Compute a factorial author: Ken Lake |
| Fahrenheit | ||
| fahrenheit.r | v:1.0.0 697 bytes 13 Mar 2003 | Converts Temperature in Celcius to Fahrenheit. author: Andrew Martin |
| Fire and Smoke particles generator. | ||
| fire-smoke-particle-generator.r | v:1.0.2 14.3 KB 18 Sep 2010 | A particle engine demo which generates fire and smoke, with a lot of control and some compositing built-in author: [unknown] |
| form-date | ||
| form-date.r documentation | v:1.0.1 5.5 KB 18 Jul 2007 | Return formatted date string using strftime style format specifiers author: Christopher Ross-Gill |
| A Variation on Conway's Game of Life | ||
| game-of-life-variation.r | v:0.0.4 5.3 KB 21 Sep 2005 | A GUI implementation of a modified version of the popular cellular automaton system.
The rules: 1) Each cell (square) on the grid is either alive (blue) or dead (white)
2) For every iteration, each cell's next state depends on current state and # of live neighbors
a) if cell is alive, it stays alive <=> 2 or 3 neighbors are alive
b) if cell is dead, [...] author: Ayrris Aunario |
| Download stock data | ||
| get-stock.r | v:0.1.9 5.1 KB 9 Jan 2006 | Get stock data from Yahoo. Return a block of blocks:
date, open, high, low, close, volume, or the csv data as a sting. Optionally store the csv data as a file. author: matt licholai |
| Graph a function | ||
| graph.r | v:1.1.0 19.2 KB 13 Jun 2004 | Graph a function
rounding function by Ladislav Mecir
Usage ....
Type in your function of x into the input field
Some pretty functions to get you started .....
3 * sin (0.5 * pi * x)
3 * sin (x * x)
exp(0.1 * x) * (sin(4 * pi * x))
4 * sin (4 * pi / x)
0.2 * exp(- x) * sin [...] author: Phil Bevan |
| Histogram maker | ||
| histogrammer.r | v:1.0.0 9.6 KB 18 Apr 2011 | To produce a histogram from a data series,
to display it in a window, to save it as PNG file
and/or as a data file author: Rudolf W. Meijer |
| IEEE-32 | ||
| ieee.r | v:0.0.2 2.8 KB 28 Jan 2004 | Provides conversion to and from IEEE-32 float (binary) author: Piotr Gapinski |
| Mandelbrot fractal ASCII renderer, integer version for Rebol, Red and World | ||
| int-mandelbrot.r | v:1.0.0 1.9 KB 29 Dec 2013 | Show a Mandelbrot fractal on the console author: Marco Antoniazzi |
| Kilos to Stones & Pounds | ||
| kg-st-remainder-lbs.r | 923 bytes 5 Sep 2005 | To convert weight from kg to stone & lbs. author: Leke |
| Leapyear | ||
| leapyear.r | v:1.0.0 683 bytes 13 Mar 2003 | Returns true for a leap year. author: Andrew Martin |
| lexigraphic permutations | ||
| lexpem.r | 1.9 KB 26 Oct 2003 | to generate permutations of a series in the order they would be found in a dictionary author: Tom Conlin |
| linear-interp | ||
| linear-interp.r | v:0.0.1 1.4 KB 8 Nov 2006 | Linearly interpolate between two numbers author: Glenn M. Lewis |
| Mandelbrot | ||
| mandelbrot.r | v:0.0.1 1.9 KB 18 Aug 2009 | Create Mandelbrot Set author: Keith Ray |
| Mandelbrot II | ||
| mandelbrot2.r | v:0.0.1 3.0 KB 18 Aug 2009 | Create Mandelbrot Set with colors author: Keith Ray |
| Mass mailer | ||
| massmailer.r documentation | v:2.3.24 6.1 KB 15 Feb 2011 | Mass emailng the world! author: Massimiliano Vessi |
| Mini-Calculator | ||
| mini-calc.r | v:1.1.3 1.3 KB 13 Mar 2003 | Tiny calculator example. author: Ryan Cole |
| Mini virtual and x86 machine dll to speed-up calculations a bit | ||
| mini-reb-vm.r | v:0.1.1 41.1 KB 24 Feb 2019 | speed-up calculations a bit. author: Marco Antoniazzi |
| Decimal Arithmetic | ||
| money.r documentation | v:see mo 7.0 KB 22 Jul 2010 | Decimal arithmetic for numbers held as strings.
Numbers may have up to 12 integral digits
and always have 2 fractional digits author: peter |
| Multi-methods implementation | ||
| multi-methods.r | v:1.4.0 9.0 KB 11 Apr 2005 | Implements polyformism using multi-methods technique and typed objects author: Jaime Vargas |
| Natural numbers sum | ||
| natural-numbers-sum.r | 1.0 KB 27 Sep 2014 | Sums all the natural numbers up to
a given input.
Uses the equality:
1 + 2 + 3 +... + n = n*(n+1)/2
to avoid looping. author: Caridorc |
| How many seconds old are you? | ||
| now.r | 1.2 KB 6 Sep 2004 | Newbie exercise (written by a newbie) to learn more about the NOW Function Word. author: Leke |
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