[R-SIG-Finance] Zoo functions

[Dirk Eddelbuettel]

On 4 February 2008 at 17:35, MAB wrote:
| So do I understand correctly that I should not attempt to use a function 
| lag.zoo but should use the function lag after loading the zoo library?

Correct:

> zoo(1:4, order.by=Sys.Date()+0:3)
2008-02-04 2008-02-05 2008-02-06 2008-02-07 
         1          2          3          4 
> zz <- zoo(1:4, order.by=Sys.Date()+0:3)
> zz
2008-02-04 2008-02-05 2008-02-06 2008-02-07 
         1          2          3          4 
> lag(zz)
2008-02-04 2008-02-05 2008-02-06 
         2          3          4 
> lag(zz, -1)
2008-02-05 2008-02-06 2008-02-07 
         1          2          3 
> 

Dirk

-- 
Three out of two people have difficulties with fractions.