7
#[6,] 0.17196576 0.25992668 0.14820905 0.44368375 0.09780113 0.094327534
A.K.
- Original Message -
From: Keith Weintraub
To: r-help@r-project.org
Cc:
Sent: Wednesday, November 7, 2012 6:14 PM
Subject: Re: [R] Aggregate data frame across columns
Arun, Jeff, Bert,
Thanks for yo
7196576 0.40813573 0.44368375 0.19212866
A.K.
- Original Message -
From: Keith Weintraub
To: r-help@r-project.org
Cc:
Sent: Wednesday, November 7, 2012 6:14 PM
Subject: Re: [R] Aggregate data frame across columns
Arun, Jeff, Bert,
Thanks for your help.
I have put a subset of my dat
Here is one way of doing it:
# get subset of the column names
ss <- substring(names(mySubset), 1, 5)
# create the indices of common column
colIndx <- split(seq(ncol(mySubset)), ss)
rSums <- lapply(colIndx, function(x) rowSums(mySubset[, x], na.rm = TRUE))
# create dataframe
newResult <- as.data.fr
Arun, Jeff, Bert,
Thanks for your help.
I have put a subset of my data below in mySubset.
I would like to be able to sum the rows by year. In this case the results would
be the result data.frame below.
How can I automate something like this and how would I do it quarterly if
necessary.
The
1534
#2004 Q2 1833
#2004 Q3 1445
#2004 Q4 1720
#2005 Q1 1444
#2005 Q2 1630
#2005 Q3 1780
#2005 Q4 1458
A.K.
- Original Message -
From: Keith Weintraub
To: r-help@r-project.org
Cc:
Sent: Wednesday, November 7, 2012 12:32 PM
Subject: [R] Aggregate data frame across columns
Folks,
I have a data f
The best way to get an answer is to provide sample data and desired results
(computed by hand or by any other available means). See
http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example.
In the vague question begets a vague answer department, I would use melt fr
- Original Message -
From: Keith Weintraub
To: r-help@r-project.org
Cc:
Sent: Wednesday, November 7, 2012 12:32 PM
Subject: [R] Aggregate data frame across columns
Folks,
I have a data frame with columns 200401, 200402, ..., 201207, 201208.
These represent years/months. What woul
Have you read the Introduction to R tutorial? This is discussed there,
I believe. If you have not, please do so before posting here further.
But ...
?tapply
?aggregate
?ave
Also the plyr package for "user-friendlier" approaches.
-- Bert
On Wed, Nov 7, 2012 at 9:32 AM, Keith Weintraub wrote:
>
Folks,
I have a data frame with columns 200401, 200402, ..., 201207, 201208.
These represent years/months. What would be the best way to sum these columns
by year? What about by quarter?
Thanks for your time,
KW
--
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