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Description

internal use only

Usage

1
pbgpd_negbilog(x, y, mar1 = c(0, 1, 0.1), mar2 = c(0, 1, 0.1), a = 1/2, b = 1/2, ...)

Arguments

x
y
mar1
mar2
a
b
...

Details

internal use only

Value

internal use only

Note

internal use only

Author(s)

P. Rakonczai

References

internal use only

See Also

internal use only

Examples

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##---- Should be DIRECTLY executable !! ----
##-- ==>  Define data, use random,
##--	or do  help(data=index)  for the standard data sets.

## The function is currently defined as
function (x, y, mar1 = c(0, 1, 0.1), mar2 = c(0, 1, 0.1), a = 1/2, 
    b = 1/2, ...) 
{
    param = as.numeric(c(mar1, mar2, -a, -b))
    mux = param[1]
    muy = param[4]
    sigx = param[2]
    sigy = param[5]
    gamx = param[3]
    gamy = param[6]
    a = param[7]
    b = param[8]
    Hxy = NULL
    error = FALSE
    if (sigx < 0 | sigy < 0 | a > 0 | b > 0) 
        error = TRUE
    if (!error) {
        Hxy = NA
        c0 = log(pbvevd(c(0, 0), model = "negbilog", mar1 = c(mux, 
            sigx, gamx), mar2 = c(muy, sigy, gamy), alpha = (-a), 
            beta = (-b)))
        Hxy = -1/c0 * log(pbvevd(c(x, y), model = "negbilog", 
            mar1 = c(mux, sigx, gamx), mar2 = c(muy, sigy, gamy), 
            alpha = (-a), beta = (-b))/pbvevd(cbind(pmin(x, 0), 
            pmin(y, 0)), model = "negbilog", mar1 = c(mux, sigx, 
            gamx), mar2 = c(muy, sigy, gamy), alpha = (-a), beta = (-b)))
    }
    else stop("invalid parameter(s)")
    Hxy
  }

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