round to specific intervals
?findInterval .. would get you the endpoints and then you could determine which is nearer. Of course in your "example", everything would get "rounded" to 1. -- Bert
On Thu, Dec 1, 2011 at 7:55 AM, Michael Kao <mkao006rmail at gmail.com> wrote:
Dear R users/helpers, I am wondering is there an existing function in which you can round numbers to a set of values. I know you can use 5 * round(x/5) for rounding to the nearest 5 or so, but what if the interval size is not constant. For example: ## Not run test <- rnorm(100) round(test, c(1, 5, 10, 20, 50)) so that the test is rounded to the closest value in the vector. Thanks for the help. Cheers,
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Bert Gunter Genentech Nonclinical Biostatistics Internal Contact Info: Phone: 467-7374 Website: http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm