Nothing
library("matrixStats")
rowCumsums_R <- function(x, ..., useNames = NA) {
suppressWarnings({
y <- t(apply(x, MARGIN = 1L, FUN = cumsum))
})
# Preserve dimnames attribute?
dim(y) <- dim(x)
dimnames(y) <- if (isTRUE(useNames)) dimnames(x) else NULL
y
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# With and without some NAs
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
dimnames <- list(letters[1:10], LETTERS[1:5]) # to check dimnames attribute
for (mode in c("logical", "integer", "double")) {
for (add_na in c(FALSE, TRUE)) {
cat("add_na = ", add_na, "\n", sep = "")
x <- matrix(1:50, nrow = 10L, ncol = 5L)
if (add_na) {
x[3:7, c(2, 4)] <- NA_real_
}
cat("mode: ", mode, "\n", sep = "")
storage.mode(x) <- mode
str(x)
# Test with and without dimnames on x
for (setDimnames in c(TRUE, FALSE)) {
if (setDimnames) dimnames(x) <- dimnames
else dimnames(x) <- NULL
# Check names attribute
for (useNames in c(if (!matrixStats:::isUseNamesNADefunct()) NA, TRUE, FALSE)) {
# Row/column ranges
r0 <- rowCumsums_R(x, useNames = useNames)
r1 <- rowCumsums(x, useNames = useNames)
r2 <- t(colCumsums(t(x), useNames = useNames))
stopifnot(all.equal(r1, r2))
stopifnot(all.equal(r1, r0))
stopifnot(all.equal(r2, r0))
} # for (useNames ...)
} # for (setDimnames ...)
} # for (add_na ...)
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# All NAs
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
for (mode in c("logical", "integer", "double")) {
x <- matrix(NA_real_, nrow = 10L, ncol = 5L)
cat("mode: ", mode, "\n", sep = "")
storage.mode(x) <- mode
str(x)
# Test with and without dimnames on x
for (setDimnames in c(TRUE, FALSE)) {
if (setDimnames) dimnames(x) <- dimnames
else dimnames(x) <- NULL
# Check names attribute
for (useNames in c(if (!matrixStats:::isUseNamesNADefunct()) NA, TRUE, FALSE)) {
# Row/column ranges
r0 <- rowCumsums_R(x, useNames = useNames)
r1 <- rowCumsums(x, useNames = useNames)
r2 <- t(colCumsums(t(x), useNames = useNames))
stopifnot(all.equal(r1, r2))
stopifnot(all.equal(r1, r0))
stopifnot(all.equal(r2, r0))
} # for (useNames ...)
} # for (setDimnames ...)
} # for (mode ...)
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# A 1x1 matrix
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
dimnames <- list("a", "A") # to check dimnames attribute
for (mode in c("logical", "integer", "double")) {
x <- matrix(0, nrow = 1L, ncol = 1L)
cat("mode: ", mode, "\n", sep = "")
storage.mode(x) <- mode
str(x)
r0 <- rowCumsums_R(x)
r1 <- rowCumsums(x)
r2 <- t(colCumsums(t(x)))
stopifnot(all.equal(r1, r2))
stopifnot(all.equal(r1, r0))
stopifnot(all.equal(r2, r0))
# Check dimnames attribute
dimnames(x) <- dimnames
# r0 <- rowCumsums_R(x)
# > r0
# a
# [1,] 0
r1 <- rowCumsums(x, useNames = TRUE)
r2 <- t(colCumsums(t(x), useNames = TRUE))
stopifnot(identical(dimnames(r1), dimnames))
stopifnot(identical(dimnames(r2), dimnames))
dimnames(x) <- NULL
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# Corner cases
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
names <- LETTERS[1:5] # to check dimnames attribute
for (mode in c("logical", "integer", "double")) {
cat("mode: ", mode, "\n", sep = "")
value <- 0
storage.mode(value) <- mode
value2 <- value
if (mode == "logical") value2 <- 0L
# A 0x0 matrix
x <- matrix(value, nrow = 0L, ncol = 0L)
str(x)
r0 <- matrix(value2, nrow = nrow(x), ncol = ncol(x))
r1 <- rowCumsums(x)
r2 <- t(colCumsums(t(x)))
stopifnot(all.equal(r1, r2))
stopifnot(all.equal(r1, r0))
stopifnot(all.equal(r2, r0))
# A 0xK matrix
x <- matrix(value, nrow = 0L, ncol = 5L)
str(x)
colnames <- LETTERS[1:5]
# Test with and without dimnames on x
for (setDimnames in c(TRUE, FALSE)) {
if (setDimnames) colnames(x) <- colnames
else dimnames(x) <- NULL
# Check names attribute
for (useNames in c(if (!matrixStats:::isUseNamesNADefunct()) NA, TRUE, FALSE)) {
r0 <- rowCumsums_R(x, useNames = useNames)
r1 <- rowCumsums(x, useNames = useNames)
r2 <- t(rowCumsums(t(x), useNames = useNames))
stopifnot(all.equal(r1, r2))
stopifnot(all.equal(r1, r0))
stopifnot(all.equal(r2, r0))
} # for (useNames ...)
} # for (setDimnames ...)
# A Nx0 matrix
x <- matrix(value, nrow = 5L, ncol = 0L)
str(x)
rownames <- LETTERS[1:5]
# Test with and without dimnames on x
for (setDimnames in c(TRUE, FALSE)) {
if (setDimnames) rownames(x) <- rownames
else dimnames(x) <- NULL
# Check names attribute
for (useNames in c(if (!matrixStats:::isUseNamesNADefunct()) NA, TRUE, FALSE)) {
r0 <- rowCumsums_R(x, useNames = useNames)
r1 <- rowCumsums(x, useNames = useNames)
r2 <- t(rowCumsums(t(x), useNames = useNames))
stopifnot(all.equal(r1, r2))
stopifnot(all.equal(r1, r0))
stopifnot(all.equal(r2, r0))
} # for (useNames ...)
} # for (setDimnames ...)
} # for (mode ...)
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.