Nothing
dpearsonI <- function(x,a,b,location,scale,params,log=FALSE) {
if (!missing(params)) { a <- params[[1]]; b <- params[[2]]
location <- params[[3]]; scale <- params[[4]] }
# stopifnot((a>0)&&(b>0)&&(scale!=0))
if (log) {
dbeta((x-location)/scale,a,b,log=TRUE)-log(abs(scale))
} else {
1/abs(scale)*dbeta((x-location)/scale,a,b)
}
}
ppearsonI <- function(q,a,b,location,scale,params,lower.tail=TRUE,log.p=FALSE) {
if (!missing(params)) { a <- params[[1]]; b <- params[[2]]
location <- params[[3]]; scale <- params[[4]] }
# stopifnot((a>0)&&(b>0)&&(scale!=0))
pbeta((q-location)/scale,a,b,lower.tail=xor(scale<0,lower.tail),log.p=log.p)
}
qpearsonI <- function(p,a,b,location,scale,params,lower.tail=TRUE,log.p=FALSE) {
if (!missing(params)) { a <- params[[1]]; b <- params[[2]]
location <- params[[3]]; scale <- params[[4]] }
# stopifnot((a>0)&&(b>0)&&(scale!=0))
scale*qbeta(p,a,b,lower.tail=xor(scale<0,lower.tail),log.p=log.p)+location
}
rpearsonI <- function(n,a,b,location,scale,params) {
if (!missing(params)) { a <- params[[1]]; b <- params[[2]]
location <- params[[3]]; scale <- params[[4]] }
# stopifnot((a>0)&&(b>0)&&(scale!=0))
scale*rbeta(n,a,b)+location
}
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