inst/unitTests/runit.EllipticalDependency.R

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# Copyrights (C)
# for this R-port: 
#   1999 - 2007, Diethelm Wuertz, GPL
#   Diethelm Wuertz <[email protected]>
#   [email protected]
#   www.rmetrics.org
# for the code accessed (or partly included) from other R-ports:
#   see R's copyright and license files
# for the code accessed (or partly included) from contributed R-ports
# and other sources
#   see Rmetrics's copyright file 


################################################################################
# FUNCTION:                  ELLIPTICAL COPULAE DEPENDENCE MASURES:
#  ellipticalTau              Computes Kendall's tau for elliptical copulae
#  ellipticalRho              Computes Spearman's rho for elliptical copulae
# FUNCTION:                  ELLIPTICAL COPULAE TAIL COEFFICIENT:
#  ellipticalTailCoeff        Computes tail dependence for elliptical copulae
#  ellipticalTailPlot         Plots tail dependence function
################################################################################


test.ellipticalTau = 
function()
{
    # Computes Kendall's tau for elliptical copulae
    args(ellipticalTau)
    
    ellipticalTau(rho = 0.5)
    ellipticalTau(rho = c(-0.5, 0, 0.5))
    # Return Value:
    return()    
}


# ------------------------------------------------------------------------------


test.ellipticalRho = 
function()
{    
    # Computes Spearman's rho for elliptical copulae
    args(ellipticalRho)
    
    ellipticalRho(0.5)
    ellipticalRho(rho = c(-0.5, 0, 0.5))
 
    # Return Value:
    return()    
}


################################################################################


test.ellipticalTailCoeff = 
function()
{
    # Lower - Upper ----
    
    # Tail Coefficient - Using Default Parameters:
    Type = c("norm", "cauchy", "t") 
    for (type in Type) {
        ans = ellipticalTailCoeff(rho = 0.5, type = type)   
        print(ans)
        cat("\n")
    }
    # Return Value:
    return()    
}


# ------------------------------------------------------------------------------


test.ellipticalTailPlot = 
function()
{    
    # Arguments:
    # ellipticalTailPlot(param = NULL, type = c("norm", "cauchy", "t"), 
    #   tail = c("Lower", "Upper")) 
    
    # Plot - Be patient, plotting takes some time ...
    Type = c("norm", "cauchy", "t") 
    for (type in Type) {
        par(mfrow = c(2, 2), cex = 0.7)
        ellipticalTailPlot(type = type)  
        ellipticalTailPlot(type = type, tail = "Lower")   
    }           
    
    # Return Value:
    return()    
}

  
################################################################################
   

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fCopulae documentation built on Nov. 17, 2017, 2:31 p.m.