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source("incl/start.R")
library("datasets") ## warpbreaks, iris
options(future.debug = FALSE)
message("*** future_tapply() ...")
for (strategy in supportedStrategies()[1]) {
message(sprintf("*** strategy = %s ...", sQuote(strategy)))
plan(strategy)
message("- From example(tapply) ...")
message(" - Example #1")
library("stats") ## rbinom()
groups <- as.factor(stats::rbinom(32, n = 5, prob = 0.4))
t <- table(groups)
print(t)
y0 <- tapply(groups, INDEX = groups, FUN = length)
print(y0)
y1 <- future_tapply(groups, INDEX = groups, FUN = length)
print(y1)
stopifnot(all.equal(y1, y0))
y2 <- future_tapply(groups, INDEX = groups, FUN = "length")
print(y2)
stopifnot(all.equal(y2, y0))
message(" - Example #2")
## contingency table from data.frame : array with named dimnames
y0 <- tapply(warpbreaks$breaks, INDEX = warpbreaks[,-1], FUN = sum)
print(y0)
y1 <- future_tapply(warpbreaks$breaks, INDEX = warpbreaks[,-1], FUN = sum)
print(y1)
stopifnot(all.equal(y1, y0))
message(" - Example #3")
y0 <- tapply(warpbreaks$breaks, warpbreaks[, 3, drop = FALSE], sum)
print(y0)
y1 <- future_tapply(warpbreaks$breaks, warpbreaks[, 3, drop = FALSE], sum)
print(y1)
stopifnot(all.equal(y1, y0))
message(" - Example #4")
n <- 17
fac <- factor(rep_len(1:3, n), levels = 1:5)
t <- table(fac)
y0 <- tapply(1:n, fac, sum)
print(y0)
y1 <- future_tapply(1:n, fac, sum)
print(y1)
stopifnot(all.equal(y1, y0))
message(" - Example #5")
if ("default" %in% names(formals(tapply))) {
y0 <- tapply(1:n, fac, sum, default = 0) # maybe more desirable
print(y0)
y1 <- future_tapply(1:n, fac, sum, default = 0) # maybe more desirable
print(y1)
stopifnot(all.equal(y1, y0))
}
message(" - Example #6")
y0 <- tapply(1:n, fac, sum, simplify = FALSE)
print(y0)
y1 <- future_tapply(1:n, fac, sum, simplify = FALSE)
print(y1)
stopifnot(all.equal(y1, y0))
message(" - Example #7")
y0 <- tapply(1:n, fac, range)
print(y0)
y1 <- future_tapply(1:n, fac, range)
print(y1)
stopifnot(all.equal(y1, y0))
message(" - Example #8")
y0 <- tapply(1:n, fac, quantile)
print(y0)
y1 <- future_tapply(1:n, fac, quantile)
print(y1)
stopifnot(all.equal(y1, y0))
message(" - Example #9")
y0 <- tapply(1:n, fac, length) ## NA's
print(y0)
y1 <- future_tapply(1:n, fac, length) ## NA's
print(y1)
stopifnot(all.equal(y1, y0))
message(" - Example #10")
if ("default" %in% names(formals(tapply))) {
y0 <- tapply(1:n, fac, length, default = 0) # == table(fac)
print(y0)
y1 <- future_tapply(1:n, fac, length, default = 0) # == table(fac)
print(y1)
stopifnot(all.equal(y1, y0))
}
message(" - Example #11")
## example of ... argument: find quarterly means
y0 <- tapply(presidents, cycle(presidents), mean, na.rm = TRUE)
print(y0)
y1 <- future_tapply(presidents, cycle(presidents), mean, na.rm = TRUE)
print(y1)
stopifnot(all.equal(y1, y0))
message(" - Example #12")
ind <- list(c(1, 2, 2), c("A", "A", "B"))
t <- table(ind)
print(t)
y0 <- tapply(1:3, ind) #-> the split vector
print(y0)
y1 <- future_tapply(1:3, ind) #-> the split vector
print(y1)
stopifnot(all.equal(y1, y0))
message(" - Example #13")
y0 <- tapply(1:3, ind, sum)
print(y0)
y1 <- future_tapply(1:3, ind, sum)
print(y1)
stopifnot(all.equal(y1, y0))
## Some assertions (not held by all patch propsals):
message(" - Example #14")
nq <- names(quantile(1:5))
y_truth <- c(1L, 2L, 4L)
stopifnot(identical(tapply(1:3, ind), y_truth))
stopifnot(identical(future_tapply(1:3, ind), y_truth))
message(" - Example #15")
y_truth <- matrix(c(1L, 2L, NA, 3L), nrow = 2L,
dimnames = list(c("1", "2"), c("A", "B")))
stopifnot(identical(tapply(1:3, ind, sum), y_truth))
stopifnot(identical(future_tapply(1:3, ind, sum), y_truth))
message(" - Example #16")
y_truth <- array(list(
`2` = structure(c(2, 5.75, 9.5, 13.25, 17), .Names = nq),
`3` = structure(c(3, 6, 9, 12, 15), .Names = nq),
`4` = NULL, `5` = NULL),
dim = 4L, dimnames = list(as.character(2:5)))
stopifnot(identical(tapply(1:n, fac, quantile)[-1], y_truth))
stopifnot(identical(future_tapply(1:n, fac, quantile)[-1], y_truth))
if (getRversion() >= "4.3.0") {
data <- iris[, c("Sepal.Length", "Sepal.Width")]
y_truth <- tapply(data, INDEX = iris$Species, FUN = sum)
y <- future_tapply(data, INDEX = iris$Species, FUN = sum)
stopifnot(identical(y, y_truth))
y_truth2 <- tapply(data, INDEX = ~ iris$Species + iris$Petal.Width, FUN = sum)
y2 <- future_tapply(data, INDEX = ~ iris$Species + iris$Petal.Width, FUN = sum)
stopifnot(identical(y2, y_truth2))
}
plan(sequential)
message(sprintf("*** strategy = %s ... done", sQuote(strategy)))
} ## for (strategy in ...)
message("*** exceptions ...")
## Error: 'INDEX' is of length zero
res <- tryCatch({
y <- future_tapply(1L, INDEX = list())
}, error = identity)
stopifnot(inherits(res, "error"))
## Error: total number of levels >= 2^31
res <- tryCatch({
y <- future_tapply(1:216, INDEX = rep(list(1:216), times = 4L))
}, error = identity)
stopifnot(inherits(res, "error"))
## Error: arguments must have same length
res <- tryCatch({
y <- future_tapply(1L, INDEX = list(1:2))
}, error = identity)
stopifnot(inherits(res, "error"))
message("*** future_tapply() ... DONE")
source("incl/end.R")
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