str1 = "1 2 3 4 5 6 7 8 7 6 5 4 3 2 1"
str2 = "1.5, 0.5 3.5, 2.5 5.5, 4.5 7.5, 6.5"

RC.sparkline(str1)
IO.puts "" # newline
RC.sparkline(str2)