An (Optional) A single integer. If positive, number of rows in x to return. If negative, all but the n first/last number of rows in x.
Anything bigger than 20 rows will require asking the server (first 20 rows are cached on the client).
if (FALSE) {
library()
h2o.init()
f <- "https://h2o-public-test-data.s3.amazonaws.com/smalldata/iris/iris_train.csv"iris <- h2o.importFile(f)
h2o.print(iris["species"], n = 15)
}