On Oct 12, 2010, at 12:33 AM, David Winsemius wrote:
On Oct 12, 2010, at 12:16 AM, rivercode wrote:
Hi,
I am trying to find the total number of rows for a list of
data.frames and
want to know if there is a better way than using a loop like:
df = { list of data.frame with varying number
On Oct 12, 2010, at 12:16 AM, rivercode wrote:
Hi,
I am trying to find the total number of rows for a list of
data.frames and
want to know if there is a better way than using a loop like:
df = { list of data.frame with varying number of rows...each one
has a
column called "COL" }
r =
Hi,
I am trying to find the total number of rows for a list of data.frames and
want to know if there is a better way than using a loop like:
>df = { list of data.frame with varying number of rows...each one has a
column called "COL" }
>r = 0
> for (i in 1:length(df)) {
+ r = r + length(n[[i]]$CO
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