On Aug 8, 2008, at 5:18 PM, <[EMAIL PROTECTED]>
<[EMAIL PROTECTED]> wrote:
I have a beginner question. After I finally get the data to a
data.frame that I can work with I have the following a data frame
that is fairly long:
length(r2007)
[1] 17409
If I look at the first element:
r2007[1]
$`100009`
DayOfYear Quantity
1 66 1
2 128 1
3 137 1
4 193 1
Now how do I get the length of this list (actually it is another
data.frame)?
I have tried:
length(r2007[1])
[1] 1
Not right. And:
length(r2007[1]$DayOfYear)
[1] 0
Also not right the length returned should be 4 from the output
above. I want to use this to iterate through the object. So in the
outer loop I would have:
for(i in 1:length(r2007))
{
. . . .
}
I need to form an inner loop and an expression that returns each
row (as above).
Hi,
Use nrow() and ncol() to determine the number of rows and columns of
a data frame.
Cheers,
Ben
Ben Tupper
[EMAIL PROTECTED]
I GoodSearch for Ashwood Waldorf School.
Raise money for your favorite charity or school just by searching the
Internet with GoodSearch - www.goodsearch.com - powered by Yahoo!
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
