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.Rprofile
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.Rprofile
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# vim: set filetype=r:
# Default CRAN mirror
options(repos=structure(c(CRAN="https://cloud.r-project.org/")))
# Print data.table's columns classes and key
options(datatable.print.class = TRUE, datatable.print.keys = TRUE)
# Monitor memory usage ( https://stackoverflow.com/questions/1358003 )
.ls.objects <- function (pos = 1,
pattern,
order.by,
decreasing=FALSE,
head=FALSE,
n=5) {
napply <- function(names, fn) sapply(names, function(x) fn(get(x, pos = pos)))
names <- ls(pos = pos, pattern = pattern)
obj.class <- napply(names, function(x) as.character(class(x))[1])
obj.mode <- napply(names, mode)
obj.type <- ifelse(is.na(obj.class), obj.mode, obj.class)
obj.prettysize <- napply(names,
function(x) {
format(utils::object.size(x), units = "auto")
})
obj.size <- napply(names, object.size)
obj.dim <- t(napply(names, function(x) as.numeric(dim(x))[1:2]))
vec <- is.na(obj.dim)[, 1] & (obj.type != "function")
obj.dim[vec, 1] <- napply(names, length)[vec]
out <- data.frame(obj.type, obj.size, obj.prettysize, obj.dim)
names(out) <- c("Type", "Size", "PrettySize", "Length/Rows", "Columns")
if (!missing(order.by)) {
out <- out[order(out[[order.by]], decreasing=decreasing), ]
}
if (head) {
out <- head(out, n)
}
return(out)
}
.lsos <- function(..., n=10) {
.ls.objects(..., order.by="Size", decreasing=TRUE, head=TRUE, n=n)
}
# Built-in color names ( http://www.sthda.com/english/wiki/colors-in-r )
.showCols <- function(cl=colors(),
bg = "grey",
cex = 0.75,
rot = 30) {
m <- ceiling(sqrt(n <-length(cl)))
length(cl) <- m*m; cm <- matrix(cl, m)
require("grid")
grid.newpage(); vp <- viewport(w = .92, h = .92)
grid.rect(gp=gpar(fill=bg))
grid.text(cm, x = col(cm)/m, y = rev(row(cm))/m, rot = rot, vp=vp,
gp=gpar(cex = cex, col = cm))
}
# Set IRkernel default plot size ( https://irkernel.github.io/ )
.d <- function(width = 8, height = 5, scale = 2) {
options(repr.plot.width = width, repr.plot.height = height,
jupyter.plot_scale = scale)
}
# Initialize environment and print summary, useful for notebooks
.envInit <- function(packages = NULL) {
if (!is.null(packages)) {
invisible(lapply(packages, library, character.only = TRUE))
}
print(R.version.string)
print(sapply(packages, function(x) paste0(packageVersion(x))))
}