[R] Insert row in specific location between data frames

[Peter Ehlers]

On 2012-06-29 11:29, David Winsemius wrote:
>
> 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

??
Works fine for me on Windows Vista, bot 32/64-bit.

Also works for one-column dataframes.

Peter

>
>    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.
>