[R] replacing NA for zero

[Rui Barradas]

Hello,

There's a shorter one, using merge().

DF2 <- merge(data.frame(x=1:8), DF1, all.x = TRUE)
DF2$y[is.na(DF2$y)] <- 0

Rui Barradas

Em 13-06-2012 02:02, arun escreveu:
>
>
> Hi,
>
> I got confused by your heading when I sent the previous reply.  There is another way to reach the same conclusion.
>
> Try this:
> DF1<-data.frame(x=c(2,3,4,6,7),y=c(0.12,0.25,0.11,0.16,0.20))
> DF2<-data.frame(x=1:8,y=rep(NA,8))
>   df3<-merge(DF1,DF2,all=TRUE)
>   df3[is.na(df3)]<-0
> g<-rle(df3[,1])
> gVa<-g$value
> gLe<-g$lengths
> idg<-c(0,head(cumsum(gLe),-1))+1
> df4<-data.frame(x=gVa,y=df3[idg,2])
>
>> df4
>    x    y
> 1 1 0.00
> 2 2 0.12
> 3 3 0.25
> 4 4 0.11
> 5 5 0.00
> 6 6 0.16
> 7 7 0.20
> 8 8 0.00
>
> A.K.
>
>
>
>
> ----- Original Message -----
> From: Silvia Lucato <slucato at lycos.com>
> To: r-help at r-project.org
> Cc:
> Sent: Tuesday, June 12, 2012 5:55 PM
> Subject: [R] replacing NA for zero
>
>
>     Dear R users,
>
>
>
>     I have a very basic query, but was unable to find a proper anwser.
>
>
>
>     I have the following data.frame
>
>
>
>     x     y
>
>     2   0.12
>
>     3   0.25
>
>     4   0.11
>
>     6   0.16
>     7   0.20
>
>
>
>     and, due to further calculations, I need the data to be stored as
>
>
>
>     x     y
>
>     1     0
>
>     2   0.12
>
>     3   0.25
>
>     4   0.11
>
>     5     0
>
>     6   0.16
>     7   0.20
>
>     8    0
>
>
>
>     How do I do the transformation?
>
>
>
>     Many many thjanks in advance.
> ______________________________________________
> R-help at r-project.org 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.
>
>
> ______________________________________________
> R-help at r-project.org 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.
>