HTTnorm.BS.fun <- Vectorize(function(time, Psi, Temp, thetaHT, Tb, To, Psib50, Kt, sigmaPsib){
# Da Mohsen et al., 2017 - Psib50 decreases with Temperature
# for any T > To
t1 <- ifelse(Temp < To, To, Temp)
.germ1 <- thetaHT/((Temp - Tb)*time)
.germ2 <- Psi - Psib50 - Kt*(t1 - To) - .germ1
.germ3 <- ifelse(Temp < Tb, 0, .germ2)
.germ4 <- .germ2/sigmaPsib
germ <- pnorm(.germ4)
ifelse(Temp < Tb, 0, germ)
})
"HTTnorm.BS" <- function(){
fct <- function(x, parm){
time <- x[,1]; Psi <- x[,2]; Temp <- x[,3]
thetaHT <- parm[,1]; Tb <- parm[,2]; To <- parm[,3];
Psib50 <- parm[,4]
Kt <- parm[,5]; sigmaPsib <- parm[,6]
HTTnorm.BS.fun(time, Psi, Temp, thetaHT, Tb, To, Psib50, Kt, sigmaPsib)
}
text <- "Hydrothermal-time model with normal distribution of Psib (Bradford et al., 2002)"
names <- c("thetaHT", "Tb", "To", "Psib50", "Kt", "sigmaPsib")
ss <- function(data){
# x1 <- phalaris$timeAf
# x2 <- phalaris$water
# x3 <- phalaris$temp
# y <- phalaris$propCum
# data <- data.frame(x1,x2,x3,y)
# data <- data[order(data[,3], data[,2], data[,1]), ]
#
# x1 <- data[, 1]
# x2 <- data[, 2]
# x3 <- data[, 3]
# y <- data[, 4]
# temp <- drm(y ~ x1 + x2, fct=HTnorm(), curveid=x3)
# coef(temp)
# nLev <- length(levels(factor(x3)))
# sigmaPsib <- mean(coef(temp)[(2*nLev + 1):(3*nLev)])
# temp3 <- lm(1/coef(temp)[1:nLev] ~ as.numeric(levels(factor(x3))))
# Tb <- - coef(temp3)[1] / coef(temp3)[2]
# thetaHT <- - 1/coef(temp3)[1]
# temp2 <- lm(coef(temp)[(nLev + 1):(2*nLev)] ~ I(as.numeric(levels(factor(x3)))-Tb))
# Kt <- coef(temp2)[2]
# Psib50 <- coef(temp2)[1]
# thetaHT <- 357;
# Tb <- 4; To <- 33; Psib50 <- -1.1;
# Kt <- 0.26; sigmaPsib <- 0.5
# return(c(thetaHT, Tb, To, Psib50, Kt, sigmaPsib))
}
deriv1 <- function(x, parm){
#Approximation by using finite differences
d1.1 <- HTTnorm.BS.fun(x[,1], x[,2], x[,3], parm[,1], parm[,2], parm[,3], parm[,4], parm[,5], parm[,6])
d1.2 <- HTTnorm.BS.fun(x[,1], x[,2], x[,3],(parm[,1] + 10e-6), parm[,2], parm[,3], parm[,4], parm[,5], parm[,6])
d1 <- (d1.2 - d1.1)/10e-6
d2.1 <- HTTnorm.BS.fun(x[,1], x[,2], x[,3], parm[,1], parm[,2], parm[,3], parm[,4], parm[,5], parm[,6])
d2.2 <- HTTnorm.BS.fun(x[,1], x[,2], x[,3], parm[,1], (parm[,2] + 10e-6), parm[,3], parm[,4], parm[,5], parm[,6])
d2 <- (d2.2 - d2.1)/10e-6
d3.1 <- HTTnorm.BS.fun(x[,1], x[,2], x[,3], parm[,1], parm[,2], parm[,3], parm[,4], parm[,5], parm[,6])
d3.2 <- HTTnorm.BS.fun(x[,1], x[,2], x[,3], parm[,1], parm[,2], (parm[,3] + 10e-6), parm[,4], parm[,5], parm[,6])
d3 <- (d3.2 - d3.1)/10e-6
d4.1 <- HTTnorm.BS.fun(x[,1], x[,2], x[,3], parm[,1], parm[,2], parm[,3], parm[,4], parm[,5], parm[,6])
d4.2 <- HTTnorm.BS.fun(x[,1], x[,2], x[,3], parm[,1], parm[,2], parm[,3], (parm[,4] + 10e-6), parm[,5], parm[,6])
d4 <- (d4.2 - d4.1)/10e-6
d5.1 <- HTTnorm.BS.fun(x[,1], x[,2], x[,3], parm[,1], parm[,2], parm[,3], parm[,4], parm[,5], parm[,6])
d5.2 <- HTTnorm.BS.fun(x[,1], x[,2], x[,3], parm[,1], parm[,2], parm[,3], parm[,4], (parm[,5] + 10e-6), parm[,6])
d5 <- (d5.2 - d5.1)/10e-6
d6.1 <- HTTnorm.BS.fun(x[,1], x[,2], x[,3], parm[,1], parm[,2], parm[,3], parm[,4], parm[,5], parm[,6])
d6.2 <- HTTnorm.BS.fun(x[,1], x[,2], x[,3], parm[,1], parm[,2], parm[,3], parm[,4], parm[,5], (parm[,6] + 10e-6))
d6 <- (d6.2 - d6.1)/10e-6
cbind(d1, d2, d3, d4, d5, d6)
}
returnList <- list(fct=fct, names=names, text=text, deriv1 = deriv1) #ssfct=ss,
class(returnList) <- "drcMean"
invisible(returnList)
}
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.