Message-ID: <Xns9A5DEA488E945dNOTwinscomcast@80.91.229.13>
Date: 2008-03-11T03:01:43Z
From: David Winsemius
Subject: combining/deleting rows
"Suran, Luciana @ Torto Wheaton Research"
<Luciana.Suran at tortowheatonresearch.com> wrote in
news:09EBE0E1A7DEA24CAD5EA6827A7EB16D0C620EF5 at usidcxmb02.us.cbre.net:
> I'm new to R and have some question on combining (and deleting)
> rows.
You posted your email in response to a question that had nothing to do
with this question. If you have new question, you should not send a
reply to someone else's question.
> I have a dataset that looks like this:
>
<snipped single element per line listing with 47 elements>
The lines you posted had no organization that would suggest they had
ever been part of a data.frame. The first 5 elements looked to be
variable names. But the number of elements was not evenly divisible by
5. Can you post a new message with complete data and the code (or
method) that you used to bring this data into the R environment?
>
> How can I add row 1 to row 24?
If this is arranged as only one column, and you wanted the value in row
24, then the code might be:
df[24] <- df[24] + df[1]
> Also, how can I delete rows from the dataframe?
You could assign another object the values in the first object rows
that you wanted kept:
df2 <- df[c(1:3, 5:10), ]
Or you could exclude the rows you wanted dropped using a minus-sign:
df2 <- df[-4,]
df2 <- df[-c(2,5,8), ]
--
David Winsemius