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fourthcorner.rlq <- function(xtest, nrepet = 999, modeltype = 6, typetest = c("axes","Q.axes","R.axes"), p.adjust.method.G = p.adjust.methods, p.adjust.method.D = p.adjust.methods, p.adjust.D = c("global","levels"), ...)
{
## test RLQ axes
if (!inherits(xtest, "dudi"))
stop("Object of class dudi expected")
if (!inherits(xtest, "rlq"))
stop("Object of class 'rlq' expected")
if (!(modeltype %in% c(2, 4, 5, 6)))
stop("modeltype should be 2, 4, 5 or 6")
if(modeltype == 6){
test1 <- fourthcorner.rlq(xtest, modeltype = 2,nrepet = nrepet, typetest = typetest, p.adjust.method.G = p.adjust.method.G, p.adjust.method.D = p.adjust.method.D, p.adjust.D = p.adjust.D)
test2 <- fourthcorner.rlq(xtest, modeltype = 4,nrepet = nrepet, typetest = typetest, p.adjust.method.G = p.adjust.method.G, p.adjust.method.D = p.adjust.method.D, p.adjust.D = p.adjust.D)
res <- combine.4thcorner(test1, test2)
res$call <- res$tabD2$call <- res$tabD$call <- res$tabG$call <- match.call()
return(res)
}
p.adjust.D <- match.arg(p.adjust.D)
p.adjust.method.D <- match.arg(p.adjust.method.D)
p.adjust.method.G <- match.arg(p.adjust.method.G)
typetest <- match.arg(typetest)
appel <- as.list(xtest$call)
dudiR <- eval.parent(appel$dudiR)
dudiQ <- eval.parent(appel$dudiQ)
dudiL <- eval.parent(appel$dudiL)
tabR.cw <- dudiR$cw
appelR <- as.list(dudiR$call)
tabR <- Rinit <- eval.parent(appelR$df)
## Test the different cases
## typ=1 no modification (PCA on original variable)
## typ=2 ACM
## typ=3 normed and centred PCA
## typ=4 centred PCA
## typ=5 normed and non-centred PCA
## typ=6 COA
## typ=7 FCA
## typ=8 Hill-smith
typR <- dudi.type(dudiR$call)
##------- index can takes 2 values (1 for quantitative / 2 for factor) --------#
if (typR %in% c(1, 3, 4, 5, 6, 7)) {
indexR <- rep(1, ncol(Rinit))
assignR <- 1:ncol(Rinit)
} else if (typR == 2) {
indexR <- rep(2, ncol(Rinit))
assignR <- rep(1:ncol(Rinit), apply(Rinit, 2, function(x) nlevels(as.factor(x))))
Rinit <- acm.disjonctif(Rinit)
} else if (typR == 8) {
provinames <- "tmp"
indexR <- ifelse(dudiR$index == "q", 1, 2)
assignR <- as.numeric(dudiR$assign)
res <- matrix(0, nrow(Rinit), 1)
for (j in 1:(ncol(Rinit))) {
if (indexR[j] == 1) {
res <- cbind(res, Rinit[, j])
provinames <- c(provinames,names(Rinit)[j])
}
else if (indexR[j] == 2) {
w <- fac2disj(Rinit[, j], drop = TRUE)
res <- cbind(res, w)
provinames <- c(provinames, paste(substr(names(Rinit)[j], 1, 5), ".", names(w), sep = ""))
}
}
Rinit <- res[,-1]
colnames(Rinit) <- provinames[-1]
} else stop ("Not yet available")
tabQ.cw <- dudiQ$cw
appelQ <- as.list(dudiQ$call)
tabQ <- Qinit <- eval.parent(appelQ$df)
typQ <- dudi.type(dudiQ$call)
if (typQ %in% c(1, 3, 4, 5, 6, 7)) {
indexQ <- rep(1,ncol(Qinit))
assignQ <- 1:ncol(Qinit)
} else if (typQ == 2) {
indexQ <- rep(2, ncol(Qinit))
assignQ <- rep(1:ncol(Qinit),apply(Qinit, 2, function(x) nlevels(as.factor(x))))
Qinit <- acm.disjonctif(Qinit)
} else if (typQ == 8) {
provinames <- "tmp"
indexQ <- ifelse(dudiQ$index=="q",1,2)
assignQ <- as.numeric(dudiQ$assign)
res <- matrix(0, nrow(Qinit), 1)
for (j in 1:(ncol(Qinit))) {
if (indexQ[j] == 1) {
res <- cbind(res, Qinit[, j])
provinames <- c(provinames,names(Qinit)[j])
}
else if (indexQ[j] == 2) {
w <- fac2disj(Qinit[, j])
res <- cbind(res, w)
provinames <- c(provinames, paste(substr(names(Qinit)[j], 1, 5), ".", names(w), sep = ""))
}
}
Qinit <- res[,-1]
colnames(Qinit) <- provinames[-1]
} else stop ("Not yet available")
appelL <- as.list(dudiL$call)
tabL <- eval.parent(appelL$df)
tabL.cw <- dudiL$cw
tabL.lw <- dudiL$lw
ncolQ <- ncol(Qinit)
ncolR <- ncol(Rinit)
nvarR <- ncol(tabR)
nvarQ <- ncol(tabQ)
## Dimensions for D ang G matrices
naxes <- xtest$nf
if(typetest=="axes"){
ncolD <- ncolG <- naxes
nrowD <- nrowG <- naxes
typeTestN <- 1
} else if (typetest=="Q.axes"){
ncolD <- ncolG <- naxes
nrowD <- ncolQ
nrowG <- nvarQ
typeTestN <- 3
} else if(typetest=="R.axes"){
ncolD <- ncolR
ncolG <- nvarR
nrowD <- nrowG <- naxes
typeTestN <- 2
}
##----- create objects to store results -------#
tabD <- matrix(0, nrepet + 1, nrowD * ncolD)
tabD2 <- matrix(0, nrepet + 1, nrowD * ncolD)
tabG <- matrix(0, nrepet + 1, nrowG * ncolG)
res <- list()
##------------------
## Call the C code
##------------------
res <- .C("quatriemecoinRLQ",
as.double(t(Rinit)),
as.double(t(tabL)),
as.double(t(Qinit)),
as.integer(ncolR),
as.integer(nvarR),
as.integer(nrow(tabL)),
as.integer(ncol(tabL)),
as.integer(ncolQ),
as.integer(nvarQ),
as.integer(nrepet),
modeltype = as.integer(modeltype),
tabD = as.double(tabD),
tabD2 = as.double(tabD2),
tabG = as.double(tabG),
as.integer(nrowD),
as.integer(ncolD),
as.integer(nrowG),
as.integer(ncolG),
as.integer(indexR),
as.integer(indexQ),
as.integer(assignR),
as.integer(assignQ),
as.double(t(xtest$c1)),
as.double(t(xtest$l1)),
as.integer(typeTestN),
as.integer(naxes),
as.integer(typR),
as.integer(typQ),
as.double(tabR.cw),
as.double(tabQ.cw),
PACKAGE="ade4")[c("tabD","tabD2","tabG")]
##-------------------------------------------------------------------#
## Outputs #
##-------------------------------------------------------------------#
if(typetest == "axes"){
res$varnames.Q <- res$colnames.Q <- names(xtest$lQ)
res$varnames.R <- res$colnames.R <- names(xtest$lR)
res$assignR <- res$assignQ <- 1:naxes
res$indexR <- res$indexQ <- rep(1,naxes)
} else if (typetest == "Q.axes"){
res$varnames.Q <- names(tabQ)
res$colnames.Q <- colnames(Qinit)
res$varnames.R <- res$colnames.R <- names(xtest$lR)
res$indexQ <- indexQ
res$assignQ <- assignQ
res$assignR <- 1:naxes
res$indexR <- rep(1,naxes)
} else if(typetest == "R.axes"){
res$varnames.Q <- res$colnames.Q <- names(xtest$lQ)
res$varnames.R <- names(tabR)
res$colnames.R <- colnames(Rinit)
res$indexR <- indexR
res$assignR <- assignR
res$assignQ <- 1:naxes
res$indexQ <- rep(1,naxes)
}
## set invalid permutation to NA (in the case of levels of a factor with no observation)
res$tabD <- ifelse(res$tabD < (-998), NA, res$tabD)
res$tabG <- ifelse(res$tabG < (-998), NA, res$tabG)
## Reshape the tables
res$tabD <- matrix(res$tabD, nrepet + 1, nrowD * ncolD, byrow = TRUE)
res$tabD2 <- matrix(res$tabD2, nrepet + 1, nrowD * ncolD, byrow = TRUE)
res$tabG <- matrix(res$tabG, nrepet + 1, nrowG * ncolG, byrow = TRUE)
## Create vectors to store type of statistics and alternative hypotheses
names.stat.D <- vector(mode="character")
names.stat.D2 <- vector(mode="character")
names.stat.G <- vector(mode="character")
alter.G <- vector(mode="character")
alter.D <- vector(mode="character")
alter.D2 <- vector(mode="character")
for (i in 1:nrowG){
for (j in 1:ncolG){
## Type of statistics for G and alternative hypotheses
if ((res$indexR[j]==1)&(res$indexQ[i]==1)){
names.stat.G <- c(names.stat.G, "r")
alter.G <- c(alter.G, "two-sided")
}
if ((res$indexR[j]==1)&(res$indexQ[i]==2)){
names.stat.G <- c(names.stat.G, "F")
alter.G <- c(alter.G, "greater")
}
if ((res$indexR[j]==2)&(res$indexQ[i]==1)){
names.stat.G <- c(names.stat.G, "F")
alter.G <- c(alter.G, "greater")
}
}
}
for (i in 1:nrowD){
for (j in 1:ncolD){
## Type of statistics for D and alternative hypotheses
if ((res$indexR[res$assignR[j]]==1)&(res$indexQ[res$assignQ[i]]==1)){
names.stat.D <- c(names.stat.D, "r")
names.stat.D2 <- c(names.stat.D2, "r")
alter.D <- c(alter.D, "two-sided")
alter.D2 <- c(alter.D2, "two-sided")
}
if ((res$indexR[res$assignR[j]]==1)&(res$indexQ[res$assignQ[i]]==2)){
names.stat.D <- c(names.stat.D, "Homog.")
names.stat.D2 <- c(names.stat.D2, "r")
alter.D <- c(alter.D, "less")
alter.D2 <- c(alter.D2, "two-sided")
}
if ((res$indexR[res$assignR[j]]==2)&(res$indexQ[res$assignQ[i]]==1)){
names.stat.D <- c(names.stat.D, "Homog.")
names.stat.D2 <- c(names.stat.D2, "r")
alter.D <- c(alter.D, "less")
alter.D2 <- c(alter.D2, "two-sided")
}
}
}
provinames <- apply(expand.grid(res$colnames.R, res$colnames.Q), 1, paste, collapse=" / ")
res$tabD <- as.krandtest(obs = res$tabD[1, ], sim = res$tabD[-1, , drop = FALSE], names = provinames, alter = alter.D, call = match.call(), p.adjust.method = p.adjust.method.D)
res$tabD2 <- as.krandtest(obs = res$tabD2[1, ], sim = res$tabD2[-1, , drop = FALSE], names = provinames, alter = alter.D2, call = match.call(), p.adjust.method = p.adjust.method.D)
if(p.adjust.D == "levels"){
## adjustment only between levels of a factor (corresponds to the original paper of Legendre et al. 1997)
for (i in 1:nrowG){
for (j in 1:ncolG){
idx.varR <- which(res$assignR == j)
idx.varQ <- which(res$assignQ == i)
idx.vars <- ncolG * (idx.varQ - 1) + idx.varR
res$tabD$adj.pvalue[idx.vars] <- p.adjust(res$tabD$pvalue[idx.vars], method = p.adjust.method.D)
res$tabD2$adj.pvalue[idx.vars] <- p.adjust(res$tabD2$pvalue[idx.vars], method = p.adjust.method.D)
}
}
res$tabD$adj.method <- res$tabD2$adj.method <- paste(p.adjust.method.D, "by levels")
}
provinames <- apply(expand.grid(res$varnames.R, res$varnames.Q), 1, paste, collapse=" / ")
res$tabG <- as.krandtest(obs = res$tabG[1, ], sim = res$tabG[-1, , drop = FALSE], names = provinames, alter = alter.G, call = match.call(), p.adjust.method = p.adjust.method.G)
res$tabD$statnames <- names.stat.D
res$tabD2$statnames <- names.stat.D2
res$tabG$statnames <- names.stat.G
res$call <- match.call()
res$model <- modeltype
res$npermut <- nrepet
class(res) <- "4thcorner"
return(res)
}
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