[R] sum of digits or how to slice a number into its digits

From: drflxms <drflxms_at_googlemail.com>
Date: Fri, 04 Mar 2011 14:18:03 +0100

Dear R colleagues,

I face a seemingly simple problem I couldn't find a solution for myself so far:

I have to sum the digits of numbers. Example: 1010 ->2 100100110 -> 4 Unfortunately there seems not to be a function for this task. So my idea was to use sum(x) for it. But I did not figure out how to slice a number to a vector of its digits. Example (continued from above): 1010 -> c(1,0,1,0) 100100110 -> (1,0,0,1,0,0,1,1,0).

Does anyone know either a function for calculating the sum of the digits of a bumber, or how to slice a number into a vector of its digits as described above?

I'd appreciate any kind of help very much! Thanx in advance and greetings from cloudy Munich, Felix

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