[R] Substract "previous" element

[R. Michael Weylandt <michael.weylandt@gmail.com>]

Take a look at diff() though offhand I dont know what it does to matrices

M

On Oct 9, 2011, at 11:00 AM, Alaios <alaios at yahoo.com> wrote:

> Dear all,
> I have a matrix with data and I want to substract from every value the previous element.
> 
> Let's assume that my vector(matrix) is c<-(1,2,3,4,5)
> I want to get remove_previous c<-(0,1,2,3,4).
> 
> How I can do that efficiently in R?
> 
> I would like to thank you in advance for your help
> B.R
> Alex
> 
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> 
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