Package Exports

interpolate-by-pravosleva

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Readme

interpolate-by-pravosleva

NPM Module Boilerplate based

Install

yarn add interpolate-by-pravosleva

Usage samples

Linear interpolation example

import interpolate from 'interpolate-by-pravosleva';

console.log(
  interpolate.linear({ x:0.5, x1:0, y1:1, x2:1, y2:2 })
);
// 1.5

This example description

          |
y2= 2     |                           o
          |
y= ?      |             o
(1.5 will be found in line by x value)
y1= 1     o
          |
          ------------------------------------
          x1= 0         x=0.5         x2= 1

Bilinear interpolation example

import interpolate from 'interpolate-by-pravosleva';

console.log(
  interpolate.bilinear ({
    x: 3,
    y: 3.5,
    x1: 1,
    y1: 1,
    x2: 6,
    y2: 5,
    q11: 210,
    q12: 590,
    q21: 210,
    q22: 590,
  })
);
// 362

This example description

          |   q12= 590                q22= 590
y2= 5     |   o                       o
          |
          |           q= ? (362 will be found)
y= 3.5    |           o
          |
          |   q11= 210                q21= 210
y1= 1     |   o                       o
          ------------------------------------
              x1= 1   x=3             x2= 6

And also, you can read more about bilinear interpolation on wiki.

Interpolate by table (only internal table values):

import interpolate from 'interpolate-by-pravosleva';

let temperature = -21.0,
  percentage = 20.0,
  dataObj = [
    [0.0,   -30,      -20.0,    -10.0,    0.0,     20.0,  40.0,    60.0,    80.0,    100.0],
    [0.0,   4.19,     4.19,     4.19,     4.19,    4.19,  4.19,    4.19,    4.19,    4.19],
    [25.0,  3.93000,  3.93000,  3.93,     3.95,    3.98,  4.00,    4.03,    4.05,    4.08],
    [37.0,  3.68000,  3.68,     3.70000,  3.72,    3.77,  3.82,    3.88,    3.94,    4.00],
    [45.0,  3.49000,  3.49,     3.52,     3.56,    3.62,  3.69,    3.76,    3.82,    3.89],
  ];
console.log(
  interpolate.byInternalTable({
    x: temperature,
    y: percentage,
    tableAsDoubleArray: dataObj
  })
);
// 3.982

Original ReadMe

Start developing your NPM module in seconds ✨

Readymade boilerplate setup with all the best practices to kick start your npm/node module development.

Happy hacking =)

Features

ES6/ESNext - Write ES6 code and Babel will transpile it to ES5 for backwards compatibility
Test - Mocha with Istanbul coverage
Lint - Preconfigured ESlint with Airbnb config
CI - TravisCI configuration setup
Minify - Built code will be minified for performance

Commands

npm run clean - Remove lib/ directory
npm test - Run tests with linting and coverage results.
npm test:only - Run tests without linting or coverage.
npm test:watch - You can even re-run tests on file changes!
npm test:prod - Run tests with minified code.
npm run test:examples - Test written examples on pure JS for better understanding module usage.
npm run lint - Run ESlint with airbnb-config
npm run cover - Get coverage report for your code.
npm run build - Babel will transpile ES6 => ES5 and minify the code.
npm run prepublish - Hook for npm. Do all the checks before publishing your module.

Installation

Just clone this repo and remove .git folder.