Nothing
## conversion of dose and volume units
getConvFac <-
function(conversion="CGY2GY") {
conversion <- toupper(removeWS(conversion))
## check how the conversion factor is indicated
idxCGY2GY <- conversion == c("CGY2GY")
idxCGY2EVG <- conversion == c("CGY2EV/G")
idxGY2CGY <- conversion == c("GY2CGY")
idxGY2EVG <- conversion == c("GY2EV/G")
idxEVG2CGY <- conversion == c("EV/G2CGY")
idxEVG2GY <- conversion == c("EV/G2GY")
idxCGY2CGY <- conversion == c("CGY2CGY")
idxGY2GY <- conversion == c("GY2GY")
idxEVG2EVG <- conversion == c("EV/G2EV/G")
idxCC2CC <- conversion == c("CC2CC")
## did we catch all requested conversion types?
idxAll <- idxCGY2GY | idxCGY2EVG |
idxGY2CGY | idxGY2EVG |
idxEVG2CGY | idxEVG2GY |
idxCGY2CGY | idxGY2GY | idxEVG2EVG | idxCC2CC
if(!all(idxAll)) {
warning(c('Conversion type(s) "', paste(conversion[!idxAll], collapse=", "),
'" not found - conversion factor set to NA'))
}
convFac <- rep(NA_real_, length(conversion))
## conversion factors for dose units
convFac[idxCGY2GY] <- 1/100
convFac[idxCGY2EVG] <- NA_real_
convFac[idxGY2CGY] <- 100
convFac[idxGY2EVG] <- NA_real_
convFac[idxEVG2CGY] <- NA_real_
convFac[idxEVG2GY] <- NA_real_
convFac[idxCGY2CGY] <- 1
convFac[idxGY2GY] <- 1
convFac[idxEVG2EVG] <- 1
convFac[idxCC2CC] <- 1
return(convFac)
}
## determine unit from conversion string
getUnits <-
function(x="CGY2GY", first=TRUE) {
if(!is.character(x)) {
warning("Unit not recognized - input must have form like CGY2GY")
return(" ")
}
units <- strsplit(x, "2") # first and second part of string
unitLens <- sapply(units, length) # count parts
if(!all(unitLens == 2)) { # check that there are two parts
warning("Unit not recognized - input must have form like CGY2GY")
return(NA_character_)
}
knownUnits <- c("CGY", "GY", "EV/G", "CC")
isKnown <- sapply(units, function(x) { all(x %in% knownUnits) })
if(!all(isKnown)) {
warning(c("Unit not recognized - needs to be one of\n",
paste(knownUnits, collapse=" ")))
return("")
}
if(first) {
sapply(units, head, n=1)
} else {
sapply(units, tail, n=1)
}
}
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