natural-spline-interpolator

Interpolation and extrapolation based on a set of points

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Readme

Build Status
Introduction
This package provides an implementation of interpolation and extrapolation by means of natural cubic splines1.
Example
Code (plotPoint function not included):
var interpolator = require('natural-spline-interpolator'),
    f = interpolator([[-2, 2], [-1, -0.5], [0, 0.5], [1.5, -1.5]]);

for (x = -3; x < 3; x += 0.000001) {
    plotPoint(x, f(x));
}
Result:
!Plot2
For bad input, behavior is undefined.
Coding conventions
Code needs to validate with JSLint.
Comments are in Markdown.
Avoid constructors (JS is classless), don’t throw exceptions (not necessary
in JS).
Versioning: major.minor.bug-fix
Incompatible changes to the API mandate an update of the major version.

Keep version up to date in:

  + Git tags

  + `package.json`
License
Except where noted otherwise, files are licensed under the MIT License.

The MIT License (MIT)

Copyright (c) 2014 Felix E. Klee
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.