I am writing a function to plot data. I would like to specify a nice round number for the y-axis max that is greater than the max of the dataset.
Specifically, I would like a function foo that performs the following:
foo(4) == 5
foo(6.1) == 10 #maybe 7 would be better
foo(30.1) == 40
foo(100.1) == 110
I have gotten as far as
foo <- function(x) ceiling(max(x)/10)*10
for rounding to the nearest 10, but this does not work for arbitrary rounding intervals.
Is there a better way to do this in R?
ベストアンサー1
The plyr library has a function round_any that is pretty generic to do all kinds of rounding. For example
library(plyr)
round_any(132.1, 10) # returns 130
round_any(132.1, 10, f = ceiling) # returns 140
round_any(132.1, 5, f = ceiling) # returns 135