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Class: Least Squares Fit

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  Classes of Sally Evans  >  Least Squares Fit  >  Download .tar.gz .zip  >  Support forum Support forum (1)  >  Blog Blog  >  RSS 1.0 feed RSS 2.0 feed Latest changes  
Name: Least Squares Fit
Support forum Support forum
Base name: linefit
Description: Plot graph with lines defined by least square fit
Related classes: , , , , , , ,
Version: 1
PHP version: 4
License: GNU General Public License (GPL)
All time users: 1120 users
All time rank: 2730
Week users: 1 user
Week rank: 2467
Picture of Sally Evans
Author: Sally Evans <e-mail contact>
Packages: 1 Browse this author's classes Browse this author's classes
Country: United Kingdom United Kingdom - PHP jobs in United Kingdom
Age: ???
All time rank: 172177 in United Kingdom United Kingdom
Week rank: 1634 Up70 in United Kingdom United Kingdom Up
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Nominee: 1x


  Detailed description  
This class can be used to plot graphs with lines defined by the least square fit algorithm.

It takes the coordinates of a set of points and draws lines that minimize the distance to the points using the least square fit algorithm.

The generated graph is saved to a file in PNG format.

 

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  Innovation Award  
PHP Programming Innovation award nominee
October 2007
Number 6
 Least squares fit is an algorithm for calculating the coordinates of a straight line that is located at a minimal distance to a set of points.

It is often used to draw scientific graphs of points that are expected to be aligned according to a linear equation.

This class can compute the coordinates and render a line that represents the least squares fit line for a given set of points.

Manuel Lemos

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  Files folder image Files  
File Role Description
Plain text file Lingraph.php Example Example
Plain text file Line-graph.php Doc. Webpage
Image file plot.png Output Picture
Image file Screenshot.jpg Screen Screeenshot
Plain text file testdata.csv Data Data for Line-graph.php
Plain text file ymxc.class Class Class

Download all files: linefit.tar.gz linefit.zip
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