add example

Author: teunbrand

R/coord-cartesian-.R

@@ -59,6 +59,10 @@
 #' # default limits
 #' p + coord_cartesian(expand = FALSE)
 #'
+#' # Using a fixed ratio: 1 y-axis unit is 100 x-axis units
+#' # Plot window can be resized and aspect ratio will be maintained
+#' p + coord_cartesian(ratio = 100)
+#'
 #' # You can see the same thing with this 2d histogram
 #' d <- ggplot(diamonds, aes(carat, price)) +
 #'   stat_bin_2d(bins = 25, colour = "white")