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Class: Least Squares Fit


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  Classes of Sally Evans  >  Least Squares Fit  >  Download  >  Support forum Support forum (1)  >  Blog Blog  >  RSS 1.0 feed RSS 2.0 feed Latest changes  
Name: Least Squares Fit Support forum
Base name: linefit
Description: Plot graph with lines defined by least square fit
Related top rated classes: ,
Version: 1
Required PHP version: 4
License: GNU General Public License (GPL)
All time users: 913 users
All time rank: 2648
Week users: 2 users
Week rank: 2622
 
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Author

Picture of Sally Evans
Name: Sally Evans <e-mail contact>
Published packages: 1 Browse this author's classes Browse this author's classes
Country: United Kingdom United Kingdom - PHP jobs in United Kingdom
Home page: ???
Age: ???
All time rank: 1579
Week rank: 1674

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

Groups

Group folder image Algorithms Numerical and statistical algorithms View top rated classes
Group folder image Graphics Colors, images, charts and picture formats View top rated classes
Group folder image Math Math related classes. View top rated classes

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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Applications that use this class

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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
NOTICE: if you are using a download manager program like 'GetRight', please Login before trying to download this archive.

 
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