Nothing
Overimpute<-function (output, plotvars = NULL)
{
if (length(output$call$res.Over) < 100) {
warning("The number of imputed data sets is low to construct confidence intervals according to quantiles method. You should run MIPCA with nboot over 100.")
}
Overimpute_univ <- function(output, plotvars, subset = NULL) {
X.na <- output$call$X
if (is.null(subset)) {
ind <- which(!is.na(X.na[, plotvars]))
}
else {
ind <- subset
}
res <- lapply(output$call$res.Over, "[", ind, plotvars)
res.imp <- do.call(cbind, res)
res <- t(apply(res.imp, 1, function(x) {
xbar <- mean(x)
temp <- quantile(x, probs = c(0.05, 0.95))
binf <- temp[[1]]
bsup <- temp[[2]]
return(c(xbar = xbar, binf = binf, bsup = bsup))
}))
pct <- rowMeans(is.na(X.na[ind, -plotvars]))
res <- cbind(ind, xobs = X.na[ind, plotvars], res, pct)
col <- cut(pct, c(-0.1, 0.2, 0.4, 0.6, 0.8, 1.1))
levels(col) <- c("blue", "green", heat.colors(3)[c(3,
2, 1)])
col <- as.character(col)
plot(x = X.na[ind, plotvars], y = res[, "xbar"], col = col,
xlab = "observed values", ylab = "imputed values",
main = colnames(X.na)[plotvars], ylim = c(min(res[,"binf"],na.rm = T), max(res[,"bsup"],na.rm = T)))
abline(0, 1)
segments(x0 = X.na[ind, plotvars], x1 = X.na[ind, plotvars],
y0 = res[, "binf"], y1 = res[, "bsup"], col = col)
legend("topleft", legend = c("0-0.2", "0.2-0.4", "0.4-0.6",
"0.6-0.8", "0.8-1"), col = c("blue", "green", heat.colors(3)[c(3,
2, 1)]), bty = "n", lty = 1, horiz = F, cex = 0.7,lwd=.4)
return(res.over = res)
}
X.na <- output$call$X
if (is.null(plotvars)) {
Var <- 1:ncol(output$call$X)
}
else {
Var <- plotvars
}
res <- list()
par(mfrow = c(ceiling(sqrt(length(Var))), ceiling(length(Var)/ceiling(sqrt(length(Var))))),
mar = c(5, 4, 4, 2) - 1.9)
for (i in Var) {
subset <- which(!is.na(X.na)[, which(i == Var)])
if (length(subset) > 1) {
res[[as.character(i)]] <- Overimpute_univ(output = output,
plotvars = i, subset = subset)
}
else {
res[[as.character(i)]] <- NULL
}
}
return(res)
}
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