interp1

MATLAB-inspired 1-dimensional data interpolation.

Importing this function

Node Modules

• Run npm install interp1
• Add an import to the npm package import interp1 from 'interp1';
• Then you can use the function in your code.

CDN

• Put the following script tag <script src='https://cdn.jsdelivr.net/npm/interp1@1/dist/interp1.umd.min.js'></script> in the head of your index.html
• Then you can use the function in your code.

API

vqs = interp1(xs, vs, xqs);
vqs = interp1(xs, vs, xqs, method);

The function takes the following arguments:

• xs: Array of independent sample points. No value may occur more than once.
• vs: Array of dependent values v(x) with length equal to xs.
• xqs: Array of query points.
• method: Method of interpolation: linear, nearest, next or previous. Defaults to linear.

It returns an array of interpolated values vqs, corresponding to the query values xqs.

Example

var vqs = interp1(
  [1, 2, 3],
  [-4, 6, 3],
  [1, 1.5, 2.5],
  'linear',
);
console.log(vqs);
// expected output: Array [-4, 1, 4.5]

NPM scripts

• npm install: Install dependencies
• npm test: Run test suite
• npm start: Run npm run build in watch mode
• npm run test:watch: Run test suite in interactive watch mode
• npm run test:prod: Run linting and generate coverage
• npm run build: Generate bundles and typings, create docs
• npm run lint: Lints code

Related project

exact-linspace is a MATLAB-inspired function to create linearly spaced values.