1.3.0 • Published 8 years ago
speed-percentile v1.3.0
speed-percentile
A JavaScript utility to compute percentile speed from speed histogram.
Example:
var percentile = require('speed-percentile');
var histogram = {20: 1, 21: 1, 22: 2, 23: 3, 24: 4, 25: 5};
var speed = percentile(histogram, 0.85, 'R4');
//=> 24.52Install
npm install speed-percentileTest
cd to speed-percentile folder then run
npm testSyntax
percentile
var o1 = percentile(P1, P2, P3)
Computes the p-th precentile speed from a sparse hash speed histogram.
Inputs:
| param | data type | description |
|---|---|---|
P1 | associative array with integer keys | speed histogram hash {<speed>:<count>} |
P2 | number or array | one or more percentiles in decimal |
P3 | string | algorithm flag (optional): 'R4', 'R5' (default) |
Algorithms:
R4– R's sample quantile Type 4, but with linearly interpolated lower tailR5– R's sample quantile Type 5, but with both tails linearly interpolated
Outputs:
| output | data type | description |
|---|---|---|
o1 | number or array | corresponding speed(s) sorted in descending order |