Dead simple data interpolation.

• Usage
• Roadmap
• Contributing
• License

Usage

interpolate.js is a simple data interpolation library that allows for interpolation of linear and bilinear functions/datapoints.

To use the library, install it via npm:

npm install js-interpolate

Then, you can use the library as follows:

Linear interpolation enables data interpolation of a single dimension array of data points. If the requested x is out of bounds, the function will expand the data points basing off the first two data points.

import { linearInterpolation } from 'js-interpolate';

const data = [1, 2, 3, 4, 5];

console.log(linearInterpolation(data, 2.5)) // 3.5
console.log(linearInterpolation(data, 5)) // 6

Bilinear interpolation enables data interpolation of a two-dimensional array of data points where the x and y dimensions are the axis of the provided grid and z are the provided data points. If the requested x or y is out of bounds, it will provide an estimate given the nearest data points.

import { createBilinearInterpolationFunction } from 'js-interpolate';

const data = [
	[1, 2, 3],
	[4, 5, 6],
	[7, 8, 9]
];

const bilinearInterpolation = createBilinearInterpolationFunction(data);

bilinearInterpolation(0.5, 0.5) // 3

Roadmap

• [x] Linear interpolation
• [x] Bilinear interpolation
• [ ] Tricubic interpolation
• [x] Polynomial interpolation
• [ ] Spline interpolation

Contributing

Contributions are what make the open source community such an amazing place to learn, inspire, and create. Any contributions you make are greatly appreciated.

If you have a suggestion that would make this better, please fork the repo and create a pull request. You can also simply open an issue with the tag "enhancement". Don't forget to give the project a star! Thanks again!

1. Fork the Project
2. Create your Feature Branch (git checkout -b feature/AmazingFeature)
3. Commit your Changes (git commit -m 'Add some AmazingFeature')
4. Push to the Branch (git push origin feature/AmazingFeature)
5. Open a Pull Request

License

Distributed under the MIT License. See LICENSE for more information.