Nothing
pit.ensembleBMAgamma <-
function(fit, ensembleData, dates = NULL, ...)
{
#
# copyright 2006-present, University of Washington. All rights reserved.
# for terms of use, see the LICENSE file
#
powfun <- function(x,power) x^power
powinv <- function(x,power) x^(1/power)
weps <- 1.e-4
matchITandFH(fit,ensembleData)
ensembleData <- ensembleData[,matchEnsembleMembers(fit,ensembleData)]
M <- !dataNA(ensembleData)
if (!all(M)) ensembleData <- ensembleData[M,]
fitDates <- modelDates(fit)
M <- matchDates( fitDates, ensembleValidDates(ensembleData), dates)
if (!all(M$ens)) ensembleData <- ensembleData[M$ens,]
if (!all(M$fit)) fit <- fit[fitDates[M$fit]]
dates <- modelDates(fit)
Dates <- ensembleValidDates(ensembleData)
obs <- dataVerifObs(ensembleData)
nObs <- length(obs)
nForecasts <- ensembleSize(ensembleData)
PIT <- numeric(nObs)
names(PIT) <- dataObsLabels(ensembleData)
startup <- dataStartupSpeed(ensembleData)
if (is.null(startup) & !is.null(fit$startup)) {
if (length(fit$startup) != 1) stop("problem with startup specification")
startup <- rep(fit$startup, nrow(ensembleData))
}
if (is.null(startup)) startup <- controlBMAgamma()$startupSpeed
if (length(startup == 1)) startup <- rep(startup, length = nObs)
if (any(is.na(startup))) {
if (is.null(controlBMAgamma()$startupSpeed))
stop("default anemometer startup speed not specified")
startup[is.na(startup)] <- controlBMAgamma()$startupSpeed
}
obs <- sapply( dataVerifObs(ensembleData), powfun, power = fit$power)
ensembleData <- ensembleForecasts(ensembleData)
l <- 0
for (d in dates) {
l <- l + 1
WEIGHTS <- fit$weights[,d]
if (all(Wmiss <- is.na(WEIGHTS))) next
I <- which(as.logical(match(Dates, d, nomatch = 0)))
for (i in I) {
f <- ensembleData[i,]
M <- is.na(f) | Wmiss
VAR <- (fit$varCoefs[1,d] + fit$varCoefs[2,d]*f)^2
fTrans <- sapply(f, powfun, power = fit$power)
MEAN <- apply(rbind(1, fTrans) * fit$biasCoefs[,d], 2, sum)
W <- WEIGHTS
if (any(M)) {
W <- W + weps
W <- W[!M]/sum(W[!M])
}
PIT[i] <- cdfBMAgamma( obs[i], WEIGHTS = W,
MEAN = MEAN[!M], VAR = VAR[!M])
if (startup[i] > 0 && obs[i] <= startup[i]) PIT[i] <- runif(0, max = PIT[i])
}
}
PIT
}
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