R version 4.4.0 beta (2024-04-09 r86391 ucrt) -- "Puppy Cup"
Copyright (C) 2024 The R Foundation for Statistical Computing
Platform: x86_64-w64-mingw32/x64

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> library("matrixStats")
> 
> rowMedians_R <- function(x, na.rm = FALSE, ..., useNames = NA) {
+   res <- apply(x, MARGIN = 1L, FUN = median, na.rm = na.rm)
+   if (is.na(useNames) || !useNames) names(res) <- NULL
+   res
+ }
> 
> colMedians_R <- function(x, na.rm = FALSE, ..., useNames = NA) {
+   res <- apply(x, MARGIN = 2L, FUN = median, na.rm = na.rm)
+   if (is.na(useNames) || !useNames) names(res) <- NULL
+   res
+ }
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # Special case: Non-ties
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> cat("Special case: Non-ties:\n")
Special case: Non-ties:
> for (mode in c("integer", "double")) {
+   x <- matrix(1:9 + 0.1, nrow = 3, ncol = 3)
+   storage.mode(x) <- mode
+   
+   # To check names attribute
+   dimnames <- list(letters[1:3], LETTERS[1:3])
+   
+   # 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)) {
+       y0 <- rowMedians_R(x, na.rm = FALSE, useNames = useNames)
+       y1 <- rowMedians(x, na.rm = FALSE, useNames = useNames)
+       stopifnot(all.equal(y1, y0))
+       
+       y0 <- colMedians_R(x, na.rm = FALSE, useNames = useNames)
+       y1 <- colMedians(x, na.rm = FALSE, useNames = useNames)
+       stopifnot(all.equal(y1, y0))
+     }
+   }
+ }
> 
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # Special case: Ties
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> cat("Special case: Ties:\n")
Special case: Ties:
> for (mode in c("integer", "double")) {
+   x <- matrix(1:16 + 0.1, nrow = 4, ncol = 4)
+   storage.mode(x) <- mode
+   
+   # To check names attribute
+   dimnames <- list(letters[1:4], LETTERS[1:4])
+ 
+   # 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)) {
+       y0 <- rowMedians_R(x, na.rm = FALSE, useNames = useNames)
+       y1 <- rowMedians(x, na.rm = FALSE, useNames = useNames)
+       stopifnot(all.equal(y1, y0))
+       
+       y0 <- colMedians_R(x, na.rm = FALSE, useNames = useNames)
+       y1 <- colMedians(x, na.rm = FALSE, useNames = useNames)
+       stopifnot(all.equal(y1, y0))
+     }
+   }
+ }
> 
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # Special case: Single-element matrix
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> cat("Special case: Single-element matrix:\n")
Special case: Single-element matrix:
> for (mode in c("integer", "double")) {
+   x <- matrix(1, nrow = 1, ncol = 1)
+   storage.mode(x) <- mode
+   
+   # To check names attribute
+   dimnames <- list("a", "A")
+ 
+   # 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)) {
+       y0 <- rowMedians_R(x, na.rm = FALSE, useNames = useNames)
+       y1 <- rowMedians(x, na.rm = FALSE, useNames = useNames)
+       stopifnot(all.equal(y1, y0))
+       
+       y0 <- colMedians_R(x, na.rm = FALSE, useNames = useNames)
+       y1 <- colMedians(x, na.rm = FALSE, useNames = useNames)
+       stopifnot(all.equal(y1, y0))
+     }
+   }
+ }
> 
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # Special case: Empty matrix
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> cat("Special case: Empty matrix:\n")
Special case: Empty matrix:
> for (mode in c("integer", "double")) {
+   x <- matrix(integer(0), nrow = 0, ncol = 0)
+   storage.mode(x) <- mode
+ 
+   y0 <- rowMedians_R(x, na.rm = FALSE)
+   y1 <- rowMedians(x, na.rm = FALSE)
+   stopifnot(all.equal(y1, y0))
+ 
+   y0 <- colMedians_R(x, na.rm = FALSE)
+   y1 <- colMedians(x, na.rm = FALSE)
+   stopifnot(all.equal(y1, y0))
+ }
> 
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # Special case: All NAs
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> cat("Special case: All NAs:\n")
Special case: All NAs:
> for (mode in c("integer", "double")) {
+   x <- matrix(NA_integer_, nrow = 3, ncol = 3)
+   storage.mode(x) <- mode
+   
+   # To check names attribute
+   dimnames <- list(letters[1:3], LETTERS[1:3])
+ 
+   # 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)) {
+       y0 <- rowMedians_R(x, na.rm = TRUE, useNames = useNames)
+       y1 <- rowMedians(x, na.rm = TRUE, useNames = useNames)
+       stopifnot(all.equal(y1, y0))
+       
+       y0 <- colMedians_R(x, na.rm = TRUE, useNames = useNames)
+       y1 <- colMedians(x, na.rm = TRUE, useNames = useNames)
+       stopifnot(all.equal(y1, y0))
+     }
+   }
+ }
> 
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # Special case: All NaNs
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> cat("Special case: All NaNs:\n")
Special case: All NaNs:
> x <- matrix(NA_real_, nrow = 3, ncol = 3)
> 
> # 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)) {
+     y0 <- rowMedians_R(x, na.rm = TRUE, useNames = useNames)
+     y1 <- rowMedians(x, na.rm = TRUE, useNames = useNames)
+     stopifnot(all.equal(y1, y0))
+     
+     y0 <- colMedians_R(x, na.rm = TRUE, useNames = useNames)
+     y1 <- colMedians(x, na.rm = TRUE, useNames = useNames)
+     stopifnot(all.equal(y1, y0))
+   }
+ }
> 
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # Special case: All Infs
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> cat("Special case: All Infs:\n")
Special case: All Infs:
> x <- matrix(Inf, nrow = 3, ncol = 3)
> 
> # 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)) {
+     y0 <- rowMedians_R(x, na.rm = FALSE, useNames = useNames)
+     y1 <- rowMedians(x, na.rm = FALSE, useNames = useNames)
+     stopifnot(all.equal(y1, y0))
+     
+     y0 <- colMedians_R(x, na.rm = FALSE, useNames = useNames)
+     y1 <- colMedians(x, na.rm = FALSE, useNames = useNames)
+     stopifnot(all.equal(y1, y0))
+   }
+ }
> 
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # Special case: All -Infs
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> cat("Special case: All -Infs:\n")
Special case: All -Infs:
> x <- matrix(-Inf, nrow = 3, ncol = 3)
> 
> # 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)) {
+     y0 <- rowMedians_R(x, na.rm = FALSE, useNames = useNames)
+     y1 <- rowMedians(x, na.rm = FALSE, useNames = useNames)
+     stopifnot(all.equal(y1, y0))
+     
+     y0 <- colMedians_R(x, na.rm = FALSE, useNames = useNames)
+     y1 <- colMedians(x, na.rm = FALSE, useNames = useNames)
+     stopifnot(all.equal(y1, y0))
+   }
+ }
> 
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # Special case: Infs and -Infs
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> cat("Special case: Infs and -Infs:\n")
Special case: Infs and -Infs:
> x <- matrix(c(-Inf, +Inf), nrow = 4, ncol = 4)
> 
> # To check names attribute
> dimnames <- list(letters[1:4], LETTERS[1:4])
> 
> # 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)) {
+     y0 <- rowMedians_R(x, na.rm = FALSE, useNames = useNames)
+     y1 <- rowMedians(x, na.rm = FALSE, useNames = useNames)
+     stopifnot(all.equal(y1, y0))
+     
+     y0 <- colMedians_R(x, na.rm = FALSE, useNames = useNames)
+     y1 <- colMedians(x, na.rm = FALSE, useNames = useNames)
+     stopifnot(all.equal(y1, y0))
+   }
+ }
> 
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # Special case: Integer overflow with ties
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> cat("Special case: Integer overflow with ties:\n")
Special case: Integer overflow with ties:
> x <- matrix(.Machine$integer.max, nrow = 4, ncol = 4)
> 
> # 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)) {
+     y0 <- rowMedians_R(x, na.rm = FALSE, useNames = useNames)
+     y1 <- rowMedians(x, na.rm = FALSE, useNames = useNames)
+     stopifnot(all.equal(y1, y0))
+     
+     y0 <- colMedians_R(x, na.rm = FALSE, useNames = useNames)
+     y1 <- colMedians(x, na.rm = FALSE, useNames = useNames)
+     stopifnot(all.equal(y1, y0))
+   }
+ }
> 
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # Consistency checks
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> set.seed(1)
> 
> cat("Consistency checks:\n")
Consistency checks:
> n_sims <- if (Sys.getenv("_R_CHECK_USE_VALGRIND_") != "") 4L else 20L
> for (kk in seq_len(n_sims)) {
+   cat("Random test #", kk, "\n", sep = "")
+ 
+   # Simulate data in a matrix of any shape
+   dim <- sample(50:200, size = 2)
+   n <- prod(dim)
+   x <- rnorm(n, sd = 100)
+   dim(x) <- dim
+ 
+   # Add NAs?
+   if ((kk %% 4) %in% c(3, 0)) {
+     cat("Adding NAs\n")
+     nna <- sample(n, size = 1)
+     na_values <- c(NA_real_, NaN)
+     t <- sample(na_values, size = nna, replace = TRUE)
+     x[sample(length(x), size = nna)] <- t
+   }
+ 
+   # Integer or double?
+   if ((kk %% 4) %in% c(2, 0)) {
+     cat("Coercing to integers\n")
+     storage.mode(x) <- "integer"
+   }
+ 
+   na.rm <- sample(c(TRUE, FALSE), size = 1)
+ 
+   # rowMedians():
+   y0 <- rowMedians_R(x, na.rm = na.rm)
+   y1 <- rowMedians(x, na.rm = na.rm)
+   stopifnot(all.equal(y1, y0))
+   y2 <- colMedians(t(x), na.rm = na.rm)
+   stopifnot(all.equal(y2, y0))
+ 
+   # colMedians():
+   y0 <- colMedians_R(x, na.rm = na.rm)
+   y1 <- colMedians(x, na.rm = na.rm)
+   stopifnot(all.equal(y1, y0))
+   y2 <- rowMedians(t(x), na.rm = na.rm)
+   stopifnot(all.equal(y2, y0))
+ } # for (kk ...)
Random test #1
Random test #2
Coercing to integers
Random test #3
Adding NAs
Random test #4
Adding NAs
Coercing to integers
Random test #5
Random test #6
Coercing to integers
Random test #7
Adding NAs
Random test #8
Adding NAs
Coercing to integers
Random test #9
Random test #10
Coercing to integers
Random test #11
Adding NAs
Random test #12
Adding NAs
Coercing to integers
Random test #13
Random test #14
Coercing to integers
Random test #15
Adding NAs
Random test #16
Adding NAs
Coercing to integers
Random test #17
Random test #18
Coercing to integers
Random test #19
Adding NAs
Random test #20
Adding NAs
Coercing to integers
> 
> proc.time()
   user  system elapsed 
   0.51    0.04    0.54