[R] Insert row in specific location between data frames

[Peter Ehlers]

On 2012-06-29 10:01, pigpigmeow wrote:
> Hi everyone! I have a simple question.
>
> my data is
>   predict_SO2_a
> 1       39.793231
> 2       30.252578
> 3       32.467584
> 4       31.941509
> 5       27.908320
> 6       11.594137
> 7        9.368125
> 8       12.319093
> 9       11.558811
> 10       7.937192
> 11      11.211306
> 12      12.400342
> 13      12.393146
> 14      13.256160
> 15      10.709600
> 16       9.966334
> 17      28.850652
> 18      10.024405
>
>
>
> I want to insert row which is "NA" in 10th row

Try this:

   d <- data.frame(x = 101:118, y = rnorm(18))
   d2 <- data.frame(
              rbind(head(d, 9), NA, tail(d, -9)),
              row.names = NULL)

Peter Ehlers

>
> that is ..
>   predict_SO2_a
> 1       39.793231
> 2       30.252578
> 3       32.467584
> 4       31.941509
> 5       27.908320
> 6       11.594137
> 7        9.368125
> 8       12.319093
> 9       11.558811
> 10     NA
> ....
> and it becomes 19 rows in this data.
>
>
> however, I can't do this. my scipt is following
> topdata<- predict_SO2_a[1:10,]
> bottomdata<- predict_SO2_a[11:nrow(predict_SO2_a),]
> nadata<- data.frame(NA)
> d1<- rbind(topdata,nadata)
> d2<- rbind(d1, bottomdata)
>
> what is my problem?!
>
> Thank in advance!
>
>
>
>
> --
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>
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