[R] General "moving" functions

[Neil Osborne]

General "moving" function.

I'm a relatively new comer to R, and I've only just started writing my own R 
functions. However, I need some help for something which I'm sure is quite 
straight forward.

I want to write a function that will allow me to calculate "moving results" 
for a given vector. Ideally, the function will be of the form


foo<-function(vector1, funcname, lag)
{

}

for example, if I use arguments :

funcname = mean
lag = 10


Then foo will return a vector of 10 day moving average

Many Thanks

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