context("Summarise")
home <- Sys.getenv("HOME", "~/.m2/repository")
options(dplyr.jdbc.classpath = paste0(home, "/.m2/repository"))
src <- src_calcite(getOption('dplyr.calcite.model', NULL))
test_that("apply mean", {
test_df <- tbl(src, "Batting")
out <- as.data.frame(summarise(test_df, x = mean(G_batting)))
expect_equal(nrow(out), 1)
expect_equal(ncol(out), 1)
expect_equal(out$x, 48)
})
test_that("summarise peels off a single layer of grouping", {
test_df <- tbl(src, "Batting")
grouped <- group_by(test_df, teamID)
summed <- as.data.frame(summarise(grouped, n=n()))
expect_equal(nrow(summed), 149)
expect_equal(ncol(summed), 2)
expect_equal(summed$n[[1]], 25)
})
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.