PHPExcel_Shared_Best_Fit

# Class: PHPExcel_Best_Fit Source Location: /PHPExcel/Shared/trend/bestFitClass.php
### Class Overview
PHPExcel_Best_Fit #### Author(s): #### Copyright: Copyright (c) 2006 - 2010 PHPExcel (http://www.codeplex.com/PHPExcel) | ### Variables $_adjustToZero $_bestFitType $_correlation $_covariance $_DFResiduals $_error $_F $_goodnessOfFit $_intersect $_intersectSE $_slope $_slopeSE $_SSRegression $_SSResiduals $_stdevOfResiduals $_valueCount $_Xoffset $_xValues $_yBestFitValues $_Yoffset $_yValues | ### Methods __construct getBestFitType getCorrelation getCovariance getDFResiduals getEquation getError getF getGoodnessOfFit getGoodnessOfFitPercent getIntersect getIntersectSE getSlope getSlopeSE getSSRegression getSSResiduals getStdevOfResiduals getValueOfXForY getValueOfYForX getXValues getYBestFitValues _calculateGoodnessOfFit _leastSquareFit
### Child classes: PHPExcel_Exponential_Best_Fit PHPExcel_Exponential_Best_Fit PHPExcel_Linear_Best_Fit PHPExcel_Linear_Best_Fit PHPExcel_Logarithmic_Best_Fit PHPExcel_Logarithmic_Best_Fit PHPExcel_Polynomial_Best_Fit PHPExcel_Polynomial_Best_Fit PHPExcel_Power_Best_Fit PHPExcel_Power_Best_Fit
### Class Details [line 36] PHPExcel_Best_Fit #### Tags:
copyright: | Copyright (c) 2006 - 2010 PHPExcel (http://www.codeplex.com/PHPExcel)
[ Top ] ### Class Variables #### $_adjustToZero = False [line 48] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_bestFitType = 'undetermined' [line 40] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_correlation = 0 [line 58] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_covariance = 0 [line 56] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_DFResiduals = 0 [line 64] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_error = False [line 38] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_F = 0 [line 66] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_goodnessOfFit = 1 [line 52] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_intersect = 0 [line 72] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_intersectSE = 0 [line 74] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_slope = 0 [line 68] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_slopeSE = 0 [line 70] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_SSRegression = 0 [line 60] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_SSResiduals = 0 [line 62] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_stdevOfResiduals = 0 [line 54] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_valueCount = 0 [line 42] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_Xoffset = 0 [line 76] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_xValues = array() [line 44] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_yBestFitValues = array() [line 50] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_Yoffset = 0 [line 78] #### Tags:
access: | protected
Type: | mixed
[ Top ] #### $_yValues = array() [line 46] #### Tags:
access: | protected
Type: | mixed
[ Top ] ### Class Methods ### constructor __construct [line 311]
`PHPExcel_Best_Fit __construct( $yValues, [ $xValues = array()], [ $const = True])`
Overridden in child classes as: PHPExcel_Exponential_Best_Fit::__construct() PHPExcel_Linear_Best_Fit::__construct() PHPExcel_Logarithmic_Best_Fit::__construct() PHPExcel_Polynomial_Best_Fit::__construct() PHPExcel_Power_Best_Fit::__construct() #### Parameters:
| $yValues |
| $xValues |
| $const |
[ Top ] ### method getBestFitType [line 86]
`void getBestFitType( )`
#### Tags:
access: | public
[ Top ] ### method getCorrelation [line 207]
`void getCorrelation( [ $dp = 0])`
#### Tags:
access: | public
#### Parameters:
| $dp |
[ Top ] ### method getCovariance [line 199]
`void getCovariance( [ $dp = 0])`
#### Tags:
access: | public
#### Parameters:
| $dp |
[ Top ] ### method getDFResiduals [line 183]
`void getDFResiduals( [ $dp = 0])`
#### Tags:
access: | public
#### Parameters:
| $dp |
[ Top ] ### method getEquation [line 106]
`void getEquation( [ $dp = 0])`
#### Tags:
access: | public
Overridden in child classes as: PHPExcel_Exponential_Best_Fit::getEquation() PHPExcel_Linear_Best_Fit::getEquation() PHPExcel_Logarithmic_Best_Fit::getEquation() PHPExcel_Polynomial_Best_Fit::getEquation() PHPExcel_Power_Best_Fit::getEquation() #### Parameters:
| $dp |
[ Top ] ### method getError [line 81]
`void getError( )`
#### Tags:
access: | public
[ Top ] ### method getF [line 191]
`void getF( [ $dp = 0])`
#### Tags:
access: | public
#### Parameters:
| $dp |
[ Top ] ### method getGoodnessOfFit [line 143]
`void getGoodnessOfFit( [ $dp = 0])`
#### Tags:
access: | public
#### Parameters:
| $dp |
[ Top ] ### method getGoodnessOfFitPercent [line 151]
`void getGoodnessOfFitPercent( [ $dp = 0])`
#### Tags:
access: | public
#### Parameters:
| $dp |
[ Top ] ### method getIntersect [line 127]
`void getIntersect( [ $dp = 0])`
#### Tags:
access: | public
Overridden in child classes as: PHPExcel_Exponential_Best_Fit::getIntersect() PHPExcel_Power_Best_Fit::getIntersect() #### Parameters:
| $dp |
[ Top ] ### method getIntersectSE [line 135]
`void getIntersectSE( [ $dp = 0])`
#### Tags:
access: | public
#### Parameters:
| $dp |
[ Top ] ### method getSlope [line 111]
`void getSlope( [ $dp = 0])`
#### Tags:
access: | public
Overridden in child classes as: PHPExcel_Exponential_Best_Fit::getSlope() PHPExcel_Polynomial_Best_Fit::getSlope() #### Parameters:
| $dp |
[ Top ] ### method getSlopeSE [line 119]
`void getSlopeSE( [ $dp = 0])`
#### Tags:
access: | public
#### Parameters:
| $dp |
[ Top ] ### method getSSRegression [line 167]
`void getSSRegression( [ $dp = 0])`
#### Tags:
access: | public
#### Parameters:
| $dp |
[ Top ] ### method getSSResiduals [line 175]
`void getSSResiduals( [ $dp = 0])`
#### Tags:
access: | public
#### Parameters:
| $dp |
[ Top ] ### method getStdevOfResiduals [line 159]
`void getStdevOfResiduals( [ $dp = 0])`
#### Tags:
access: | public
#### Parameters:
| $dp |
[ Top ] ### method getValueOfXForY [line 96]
`void getValueOfXForY( $yValue)`
#### Tags:
access: | public
Overridden in child classes as: PHPExcel_Exponential_Best_Fit::getValueOfXForY() PHPExcel_Linear_Best_Fit::getValueOfXForY() PHPExcel_Logarithmic_Best_Fit::getValueOfXForY() PHPExcel_Polynomial_Best_Fit::getValueOfXForY() PHPExcel_Power_Best_Fit::getValueOfXForY() #### Parameters:
| $yValue |
[ Top ] ### method getValueOfYForX [line 91]
`void getValueOfYForX( $xValue)`
#### Tags:
access: | public
Overridden in child classes as: PHPExcel_Exponential_Best_Fit::getValueOfYForX() PHPExcel_Linear_Best_Fit::getValueOfYForX() PHPExcel_Logarithmic_Best_Fit::getValueOfYForX() PHPExcel_Polynomial_Best_Fit::getValueOfYForX() PHPExcel_Power_Best_Fit::getValueOfYForX() #### Parameters:
| $xValue |
[ Top ] ### method getXValues [line 101]
`void getXValues( )`
#### Tags:
access: | public
[ Top ] ### method getYBestFitValues [line 215]
`void getYBestFitValues( )`
#### Tags:
access: | public
[ Top ] ### method _calculateGoodnessOfFit [line 220]
`void _calculateGoodnessOfFit( $sumX, $sumY, $sumX2, $sumY2, $sumXY, $meanX, $meanY, $const)`
#### Tags:
access: | protected
#### Parameters:
| $sumX |
| $sumY |
| $sumX2 |
| $sumY2 |
| $sumXY |
| $meanX |
| $meanY |
| $const |
[ Top ] ### method _leastSquareFit [line 274]
`void _leastSquareFit( $yValues, $xValues, $const)`
#### Tags:
access: | protected
#### Parameters:
| $yValues |
| $xValues |
| $const |
[ Top ] Documentation generated on Tue, 01 Jun 2010 17:02:10 +0200 by phpDocumentor 1.4.3