test_that("can do frequency polygon with categorical x", {
df <- data_frame(x = rep(letters[1:3], 3:1))
p <- ggplot(df, aes(x)) + geom_freqpoly(stat = "count")
d <- get_layer_data(p)
expect_s3_class(d$x, "mapped_discrete")
expect_equal(d$x, mapped_discrete(1:3))
expect_equal(d$y, 3:1)
})
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.