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    PHPExcel_Logarithmic_Best_Fit

    category PHPExcel
    package PHPExcel_Shared_Trend
    copyright Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)

     Methods

    Define the regression and calculate the goodness of fit for a set of X and Y data values

    __construct(float[] $yValues, float[] $xValues, boolean $const) 

    Parameters

    $yValues

    float[]

    The set of Y-values for this regression

    $xValues

    float[]

    The set of X-values for this regression

    $const

    boolean

    getBestFitType() 

    getBestFitType() 
    Inherited
    inherited_from \PHPExcel_Best_Fit::getBestFitType()

    getCorrelation() 

    getCorrelation($dp) 
    Inherited
    inherited_from \PHPExcel_Best_Fit::getCorrelation()

    Parameters

    $dp

    getCovariance() 

    getCovariance($dp) 
    Inherited
    inherited_from \PHPExcel_Best_Fit::getCovariance()

    Parameters

    $dp

    getDFResiduals() 

    getDFResiduals($dp) 
    Inherited
    inherited_from \PHPExcel_Best_Fit::getDFResiduals()

    Parameters

    $dp

    Return the Equation of the best-fit line

    getEquation(int $dp) : string

    Parameters

    $dp

    int

    Number of places of decimal precision to display

    Returns

    string

    getError() 

    getError() 
    Inherited
    inherited_from \PHPExcel_Best_Fit::getError()

    getF() 

    getF($dp) 
    Inherited
    inherited_from \PHPExcel_Best_Fit::getF()

    Parameters

    $dp

    Return the goodness of fit for this regression

    getGoodnessOfFit(int $dp) : float
    Inherited
    inherited_from \PHPExcel_Best_Fit::getGoodnessOfFit()

    Parameters

    $dp

    int

    Number of places of decimal precision to return

    Returns

    float

    getGoodnessOfFitPercent() 

    getGoodnessOfFitPercent($dp) 
    Inherited
    inherited_from \PHPExcel_Best_Fit::getGoodnessOfFitPercent()

    Parameters

    $dp

    Return the Value of X where it intersects Y = 0

    getIntersect(int $dp) : string
    Inherited
    inherited_from \PHPExcel_Best_Fit::getIntersect()

    Parameters

    $dp

    int

    Number of places of decimal precision to display

    Returns

    string

    Return the standard error of the Intersect

    getIntersectSE(int $dp) : string
    Inherited
    inherited_from \PHPExcel_Best_Fit::getIntersectSE()

    Parameters

    $dp

    int

    Number of places of decimal precision to display

    Returns

    string

    getSSRegression() 

    getSSRegression($dp) 
    Inherited
    inherited_from \PHPExcel_Best_Fit::getSSRegression()

    Parameters

    $dp

    getSSResiduals() 

    getSSResiduals($dp) 
    Inherited
    inherited_from \PHPExcel_Best_Fit::getSSResiduals()

    Parameters

    $dp

    Return the Slope of the line

    getSlope(int $dp) : string
    Inherited
    inherited_from \PHPExcel_Best_Fit::getSlope()

    Parameters

    $dp

    int

    Number of places of decimal precision to display

    Returns

    string

    Return the standard error of the Slope

    getSlopeSE(int $dp) : string
    Inherited
    inherited_from \PHPExcel_Best_Fit::getSlopeSE()

    Parameters

    $dp

    int

    Number of places of decimal precision to display

    Returns

    string

    Return the standard deviation of the residuals for this regression

    getStdevOfResiduals(int $dp) : float
    Inherited
    inherited_from \PHPExcel_Best_Fit::getStdevOfResiduals()

    Parameters

    $dp

    int

    Number of places of decimal precision to return

    Returns

    float

    Return the X-Value for a specified value of Y

    getValueOfXForY(float $yValue) : float

    Parameters

    $yValue

    float

    Y-Value

    Returns

    floatX-Value

    Return the Y-Value for a specified value of X

    getValueOfYForX(float $xValue) : float

    Parameters

    $xValue

    float

    X-Value

    Returns

    floatY-Value

    Return the original set of X-Values

    getXValues() : float[]
    Inherited
    inherited_from \PHPExcel_Best_Fit::getXValues()

    Returns

    float[]X-Values

    getYBestFitValues() 

    getYBestFitValues() 
    Inherited
    inherited_from \PHPExcel_Best_Fit::getYBestFitValues()

    _calculateGoodnessOfFit() 

    _calculateGoodnessOfFit($sumX, $sumY, $sumX2, $sumY2, $sumXY, $meanX, $meanY, $const) 
    Inherited
    inherited_from \PHPExcel_Best_Fit::_calculateGoodnessOfFit()

    Parameters

    $sumX

    $sumY

    $sumX2

    $sumY2

    $sumXY

    $meanX

    $meanY

    $const

    _leastSquareFit() 

    _leastSquareFit($yValues, $xValues, $const) 
    Inherited
    inherited_from \PHPExcel_Best_Fit::_leastSquareFit()

    Parameters

    $yValues

    $xValues

    $const

    Execute the regression and calculate the goodness of fit for a set of X and Y data values

    _logarithmic_regression(float[] $yValues, float[] $xValues, boolean $const) 

    Parameters

    $yValues

    float[]

    The set of Y-values for this regression

    $xValues

    float[]

    The set of X-values for this regression

    $const

    boolean

     Properties

     

    $_DFResiduals 
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_DFResiduals
     

    $_F 
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_F
     

    $_SSRegression 
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_SSRegression
     

    $_SSResiduals 
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_SSResiduals
     

    $_Xoffset 
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_Xoffset
     

    $_Yoffset 
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_Yoffset
     

    $_adjustToZero : boolean
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_adjustToZero
     

    $_bestFitType : string
     

    $_correlation 
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_correlation
     

    $_covariance 
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_covariance
     

    $_error : boolean
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_error
     

    $_goodnessOfFit 
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_goodnessOfFit
     

    $_intersect 
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_intersect
     

    $_intersectSE 
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_intersectSE
     

    $_slope 
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_slope
     

    $_slopeSE 
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_slopeSE
     

    $_stdevOfResiduals 
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_stdevOfResiduals
     

    $_valueCount : int
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_valueCount
     

    $_xValues : float[]
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_xValues
     

    $_yBestFitValues : float[]
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_yBestFitValues
     

    $_yValues : float[]
    Inherited
    inherited_from \PHPExcel_Best_Fit::$$_yValues