Description Usage Arguments Details Value Note Author(s) References See Also Examples
View source: R/pbgpd_negbilog.R
internal use only
1 | pbgpd_negbilog(x, y, mar1 = c(0, 1, 0.1), mar2 = c(0, 1, 0.1), a = 1/2, b = 1/2, ...)
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x |
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y |
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mar1 |
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mar2 |
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a |
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b |
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... |
internal use only
internal use only
internal use only
P. Rakonczai
internal use only
internal use only
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | ##---- 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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