Nothing
test_that("DataBackendCbind", {
data = as.data.table(iris)
data$Petal.Length[91:120] = NA
data$id = 1:150
b1 = as_data_backend(data[, -"Sepal.Length"], primary_key = "id")
b2 = as_data_backend(data[, c("id", "Sepal.Length")], primary_key = "id")
b = DataBackendCbind$new(b1, b2)
expect_backend(b)
expect_iris_backend(b, n_missing = 30L)
expect_set_equal(b$rownames, 1:150)
expect_set_equal(b$colnames, names(data))
expect_data_table(b$data(b$rownames, b$colnames), nrows = 150, ncols = 6)
expect_set_equal(b$distinct(b$rownames, "Species")$Species, distinct_values(iris$Species, drop = FALSE))
x = b$missings(b$rownames, c("Petal.Width", "Petal.Length"))
expect_equal(x, set_names(c(0L, 30L), c("Petal.Width", "Petal.Length")))
expect_equal(b$col_hashes, c(b1$col_hashes, b2$col_hashes)[setdiff(b$colnames, b$primary_key)])
})
test_that("issue #124", {
task = tsk("iris")
newcols = cbind(data.table(col = 1:150))
task$select(character())$cbind(newcols)
expect_data_table(task$data(cols = "col"), ncols = 1L, nrows = 150L)
})
test_that("cbind backends with same columns", {
data = as.data.table(iris)
data$id = 1:150
data1 = copy(data)
data2 = copy(data)
data1$Petal.Width = NA
b1 = as_data_backend(data1[, -"Sepal.Length"], primary_key = "id")
data2$Sepal.Width = NA
b2 = as_data_backend(data2[, c("id", "Sepal.Length", "Sepal.Width", "Petal.Width")], primary_key = "id")
rows = 1:10
cols = b2$colnames
b = DataBackendCbind$new(b1, b2)
expect_backend(b)
data = b$head(Inf)
expect_false(anyMissing(data$Petal.Width))
expect_true(allMissing(data$Sepal.Width))
expect_equal(b$col_hashes, insert_named(b1$col_hashes, b2$col_hashes)[setdiff(b$colnames, b$primary_key)])
})
test_that("Backends with different rows", {
data = as.data.table(iris)
data$id = 1:150
b1 = as_data_backend(data[1:20, -"Sepal.Length"], primary_key = "id")
b2 = as_data_backend(data[1:10, c("id", "Sepal.Length")], primary_key = "id")
b = DataBackendCbind$new(b1, b2)
expect_set_equal(b$colnames, c(names(iris), "id"))
expect_set_equal(b$rownames, 1:20)
expect_data_table(b$head(Inf), nrows = 20, ncols = 6)
expect_equal(b$col_hashes, c(b1$col_hashes, b2$col_hashes)[setdiff(b$colnames, b$primary_key)])
})
test_that("Backends with mixed data_formats", {
requireNamespace("Matrix")
i = c(1, 3:8, 20)
j = c(2, 9, 6:10, 5)
x = 7 * (1:8)
A = Matrix::sparseMatrix(i, j, x = x)
colnames(A) = letters[1:10]
X = cbind(A, Y = rnorm(nrow(A)))
task = TaskRegr$new("sparse", X, "Y")
rr = resample(task, lrn("regr.rpart"), rsmp("holdout"))
expect_number(rr$aggregate(msr("regr.mse")))
task$cbind(data.frame(z = runif(task$nrow)))
expect_backend(task$backend)
expect_set_equal(task$backend$data_formats, "data.table")
rr = resample(task, lrn("regr.rpart"), rsmp("holdout"))
expect_number(rr$aggregate(msr("regr.mse")))
})
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