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/Image/Graph/Dataset/ -> Function.php (sommaire)

Image_Graph - PEAR PHP OO Graph Rendering Utility. PHP versions 4 and 5

Author: Jesper Veggerby <pear.nosey@veggerby.dk>
Copyright: Copyright (C) 2003, 2004 Jesper Veggerby Hansen
License: http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
Version: CVS: $Id: Function.php,v 1.7 2005/08/24 20:35:57 nosey Exp $
Poids: 147 lignes (5 kb)
Inclus ou requis:0 fois
Référencé: 0 fois
Nécessite: 1 fichier
 Image/Graph/Dataset.php

Définit 1 class

Image_Graph_Dataset_Function:: (6 méthodes):
  Image_Graph_Dataset_Function()
  addPoint()
  _getPointY()
  _count()
  _stepX()
  _calculateMaxima()


Classe: Image_Graph_Dataset_Function  - X-Ref

Function data set, points are generated by calling an external function.

The function must be a single variable function and return a the result,
builtin  functions that are fx sin() or cos(). User defined function can be
used if they are such, i.e: function myFunction($variable)

Image_Graph_Dataset_Function($minimumX, $maximumX, $function, $points)   X-Ref
Image_Graph_FunctionDataset [Constructor]

param: double $minimumX The minimum X value
param: double $maximumX The maximum X value
param: string $function The name of the function, if must be a single
param: int $points The number of points to create

addPoint($x, $y = false, $ID = false)   X-Ref
Add a point to the dataset.

You can't add points to a function dataset

param: int $x The X value to add
param: int $y The Y value to add, can be omited
param: var $ID The ID of the point

_getPointY($x)   X-Ref
Gets a Y point from the dataset

param: var $x The variable to apply the function to
return: var The function applied to the X value

_count()   X-Ref
The number of values in the dataset

return: int The number of values in the dataset

_stepX()   X-Ref
The interval between 2 adjacent Y values

return: var The interval

_calculateMaxima()   X-Ref
Calculates the Y extrema of the function




Généré le : Sun Feb 25 10:22:19 2007 par Balluche grâce à PHPXref 0.7