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context("getMaxIndexOfRows")
test_that("getMaxIndexOfRows", {
a = matrix(1:6, nrow=2)
expect_equal(getMaxIndexOfRows(a), c(3L, 3L))
a = matrix(6:1, nrow=2)
expect_equal(getMaxIndexOfRows(a), c(1L, 1L))
a = rbind(c(1, 999), c(-1, -5))
expect_equal(getMaxIndexOfRows(a), c(2L, 1L))
a = matrix(rnorm(50*10), nrow=50)
expect_equal(getMaxIndexOfRows(a), apply(a, 1, which.max))
})
test_that("getMaxIndexOfCols", {
a = matrix(1:6, nrow=2)
expect_equal(getMaxIndexOfCols(a), c(2L, 2L, 2L))
a = matrix(6:1, nrow=2)
expect_equal(getMaxIndexOfCols(a), c(1L, 1L, 1L))
a = rbind(c(1, 999), c(-1, -5))
expect_equal(getMaxIndexOfCols(a), c(1L, 1L))
a = matrix(rnorm(50*10), nrow=50)
expect_equal(getMaxIndexOfCols(a), apply(a, 2, which.max))
})
test_that("normal", {
expect_equal(getMaxIndexOfRows(diag(10)), 1:10)
n = 100
perm = sample(n)
D = diag(n)
expect_equal(getMaxIndexOfRows(D[perm, ]), (1:n)[perm])
})
test_that("NA values", {
n = 300
m = matrix(runif(n), ncol=3)
mm = m
mm[, 2] = NA
expect_equal(getMaxIndexOfRows(mm), rep(NA_integer_, n/3))
a = matrix(c(1, NA, 2, 3, NA, NA), nrow=3, byrow=TRUE)
expect_equal(getMaxIndexOfRows(a, na.rm=FALSE), c(NA, 2L, NA))
expect_equal(getMaxIndexOfRows(a, na.rm=TRUE), c(1L, 2L, -1))
})
test_that("infinite values", {
n = 300
m = matrix(runif(n), ncol=3)
m[, 2] = Inf
expect_equal(getMaxIndexOfRows(m), rep(2L, 100L))
})
test_that("max.col oddity", {
expect_equal(getMaxIndexOfRows(cbind(1:10, 2:11, -Inf)), rep(2, 10))
expect_equal(getMaxIndexOfRows(cbind(-1e9 * 1:10, 1:10, 2:11)), rep(3, 10))
})
test_that("ties", {
a = matrix(c(1, 1, 2, 2), nrow=2, byrow=TRUE)
expect_equal(getMaxIndexOfRows(a, ties.method="first"), c(1L, 1L))
expect_equal(getMaxIndexOfRows(a, ties.method="last"), c(2L, 2L))
a = matrix(c(2, 1, 2, 2, 2, 1), nrow=2, byrow=TRUE)
expect_equal(getMaxIndexOfRows(a, ties.method="first"), c(1L, 1L))
expect_equal(getMaxIndexOfRows(a, ties.method="last"), c(3L, 2L))
a = matrix(c(1, 1, 2, 2), nrow=2, byrow=TRUE)
expect_equal(getMaxIndexOfCols(a, ties.method="first"), c(2L, 2L))
expect_equal(getMaxIndexOfCols(a, ties.method="last"), c(2L, 2L))
a = matrix(c(2, 1, 2, 2, 2, 1), nrow=2, byrow=TRUE)
expect_equal(getMaxIndexOfCols(a, ties.method="first"), c(1L, 2L, 1L))
expect_equal(getMaxIndexOfCols(a, ties.method="last"), c(2L, 2L, 1L))
})
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