On Jun 29, 2012, at 2:04 PM, Peter Ehlers wrote:
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)
That threw an error for me.
Error in do.call(f, cal0) : second argument must be a list
What about this?
d[ c( 1:9, NA, 10:NROW(d) ), ]
I do not like this behavior of "[" but I suppose it is useful sometimes.
--
David Winsemius, MD
West Hartford, CT
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)
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