R help - Aug 2007 - Subsetting zoo object with a vector of time values.

I have a zoo object for which I would like to subset using a vector of time 
values.  For example, I have the following time values represented in my zoo 
object.

-50.000 -49.996 -49.995 -49.960 -49.956 -49.955 -49.920 -49.916 -49.915 
-49.880

and would like to get observations corresponding to times

-50 -49.96 -49.92 -49.88.

What can I do without using the lapply or which functions?

Thank you.

Todd Remund

See ?window.zoo
e.g.

library(zoo)

# create test data
tt <- c(-50, -49.996, -49.995, -49.96, -49.956, -49.955, -49.92, -49.916,
-49.915, -49.88)
z <- zoo(seq_along(tt), tt)

window(z, c(-50, -49.96, -49.92, -49.88))

On 8/21/07, Todd Remund <tkremund98 at hotmail.com>
wrote:
> I have a zoo object for which I would like to subset using a vector of time
> values.  For example, I have the following time values represented in my
zoo
> object.
>
> -50.000 -49.996 -49.995 -49.960 -49.956 -49.955 -49.920 -49.916 -49.915
> -49.880
>
> and would like to get observations corresponding to times
>
> -50 -49.96 -49.92 -49.88.
>
> What can I do without using the lapply or which functions?
>
> Thank you.
>
> Todd Remund
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

On Tue, 21 Aug 2007, Todd Remund wrote:
> I have a zoo object for which I would like to subset using a vector of time
> values.  For example, I have the following time values represented in my
zoo
> object.
>
> -50.000 -49.996 -49.995 -49.960 -49.956 -49.955 -49.920 -49.916 -49.915
> -49.880
>
> and would like to get observations corresponding to times
>
> -50 -49.96 -49.92 -49.88.
>
> What can I do without using the lapply or which functions?
Use the window() function:

z <- zoo(1:10, c(-50.000, -49.996, -49.995, -49.960, -49.956, -49.955,
                 -49.920, -49.916, -49.915, -49.880))
window(z, c(-50, -49.96, -49.92, -49.88))

hth,
Z
> Thank you.
>
> Todd Remund
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>