[R] seq POSIXct and fill in data by Tagmarie

[PIKAL Petr]

Hi

Thanks for the data.

There is function na.locf in zoo package.

> library(zoo)

Attaching package: ‘zoo’

The following objects are masked from ‘package:base’:

    as.Date, as.Date.numeric

new$Event <- na.locf(new$Event)
  [1] 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
 [19] 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
 [37] 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
 [55] 0.1 0.1 0.1 0.1 0.1 0.1 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
 [73] 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
 [91] 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
[109] 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 1.2
Levels: 0.1 0.5 1.2

Beware that Event is factor variable.

Cheers
Petr


> -----Original Message-----
> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Dagmar
> Sent: Tuesday, October 20, 2015 12:37 PM
> To: r-help at r-project.org
> Subject: [R] seq POSIXct and fill in data by Tagmarie
>
> Hello,
> This must be a bloody R-beginner question but I just can't find an
> answer in my beginner books:
> I have a dataframe like this:
>
> myframe <- data.frame (Timestamp=c("24.09.2012 09:00:00", "24.09.2012
> 10:00:00", "24.09.2012 11:00:00"), Event=c("0.1","0.5","1.2") )
> myframe$Timestamp <- as.POSIXct(strptime(myframe$Timestamp,
> format="%d.%m.%Y %H:%M:%S"))
> expand<-data.frame(Timestamp=seq(myframe[1,1], myframe[3,1], by="1
> mins"))
> head(expand)
> new <- merge(expand, myframe, all=T)
> head(new)
>
> I do not only want to expand the Dates but also I want to fill in the
> "Events" (i.e. 0,1 untill the date were 0.5 starts).
> How do I do this?
> Thanks in advance!
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
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> PLEASE do read the posting guide http://www.R-project.org/posting-
> guide.html
> and provide commented, minimal, self-contained, reproducible code.

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