How can I calculate a trend line in PHP?

Posted by Stephen on Stack Overflow See other posts from Stack Overflow or by Stephen
Published on 2010-05-04T20:48:20Z Indexed on 2010/05/04 21:48 UTC
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Filed under:

trending

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php

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JavaScript

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graphing

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coordinates

So I've read the two related questions for calculating a trend line for a graph, but I'm still lost.

I have an array of xy coordinates, and I want to come up with another array of xy coordinates (can be fewer coordinates) that represent a logarithmic trend line using PHP.

I'm passing these arrays to javascript to plot graphs on the client side.

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