131 packages
all-the-species
information about 1 million species, common names for 80K species, icons and categories for species. animals, plants, bacteria, etc.
ascii-data-image
produces ascii images/animations from 2D datasets [2d float arrays] - eg raw pixel data, histograms, signed distance functions etc - for use in CLI / terminal / console applications
ascii-raytracer
Explore infinite 3d worlds from the comfort of your terminal
backtester-simple
simple experimental back-testing util for quant trading
barycentric-coordinates
get barycentric coordinates for triangle and tetrahedron, convert to/from cartesian coordinates, interpolate vertex normals
bayes-tokens
get word counts / frequencies on a per-speaker or per-category basis, or as an aggregate
bitey
bitey the dog skull. public domain triangle mesh in the same format as 'bunny'
black-scholes-probability
Get the probability that the price of an asset will be above the strike price of an option at the time of expiration according to the Black-Scholes model.
blob-detection-mser
NPM version of Sylvain Foucher's Javascript implementation of Maximally Stable Extremal Regions (MSER) algorithm
boids-3d
simple 3d boids class
breeden-litzenberger
Breeden-Litzenberger formula with central differences
bvh-aabbs
bounding volume hierarchy for axis-aligned bounding boxes
candles-align
align 2 or more sets of OHLCV candles by date string or unix epoch seconds; discard candles without a matching partner
candles-convert
yet another util to convert the time-duration of OHLCV candles. results are either naively merged with n-candle chunks or can be time-aligned to the clock so that, ex: 15min candles start at 10:00, 10:15 etc
candles-sample-aapl
sample OHLCV candles for AAPL from late 2022
candles-sample-vix
sample OHLCV candles for VVIX from late 2022
conditional-entropy
utils for calculating conditional entropy given an array of objects with similar fields
dl-list-of-urls
request a list of urls, optionally load each result into jquery object
draw-pixel-text
print basic text directly onto a flat pixel buffer
ffmpeg-audio-chop
extract pcm audio data from a video based on start/end time, including spectrum and pitch
fibonacci-fit
find best-fit fibonacci price retracement levels [or arbitrary levels] for an array of prices
file-age-string
get a human-friendly string describing the age of a file [or time since last modified]
flatten-objects-array
flatten a list of objects into a flat typed / untyped array, or an untyped array of arrays, then un-flatten the result back into the original objects again.
float-array-to-string
convert/encode a float array as a hex string and back again.
fwd-server-websocket
http server that routes requested urls via websocket to client(s) that generates responses to the original requests