[R] Inserting missing seq number

[Bill Dunlap]

stats::approx can do the job:

> approx(x=df$seq, df$count, xout=1:7, method="constant", f=0)
$x
[1] 1 2 3 4 5 6 7

$y
[1] 4 7 7 3 5 5 2

-Bill

On Tue, Mar 29, 2022 at 7:47 PM Jeff Reichman <reichmanj using sbcglobal.net>
wrote:

> R-help
>
> Is there a R function that will insert missing sequence number(s) and then
> fill a missing observation with the preceding value.
>
> For example df <- data.frame(seq = c(1,2,4,5,7), count = c(4,7,3,5,2))
>
>   seq count
> 1    1        4
> 2    2        7
> 3    4        3
> 4    5        5
> 5    7        2
>
> What I need is
>
>   seq count
> 1    1        4
> 2    2        7
> 3    3        7
> 4    4        3
> 5    5        5
> 6    6        5
> 7    7        2
>
> Jeff
>
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