On Dec 2, 2010, at 5:22 AM, Karl Brand wrote:
Cheers Bill.
You got me halfway, since:
> temp <- merge(x=x, y=y[,17, drop=FALSE], by="rownames", sort=FALSE)
Error in fix.by(by.x, x) : 'by' must specify valid column(s)
but, using "row.names" instead of "rownames", like:
> temp <- merge(x=x, y=y[,17, drop=FALSE], by="row.names", sort=FALSE)
works (but adds a column "Row.names").
Which seems some what counter intuitive to me since i am feeding in
two matrices to the merge function, which i understand have
'rownames', not 'row.names' as data frames have, right? Although the
output of merge() is a data frame...
This reminds me of physicists using high energy particles to
investigate the structure of the nucleus. But you have alternatives to
what might be called "destructive debugging through binoculars".
Instead of throwing code at your data and asking the assembled
audience of soothsayers to tell you what went wrong by examining the
debris, why don't you show us what the data objects actually look like?
--
David.
thanks again,
Karl
On 12/1/2010 6:08 PM, William Dunlap wrote:
Try
by="rownames"
instead of
by=rownames
Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com
-----Original Message-----
From: r-help-boun...@r-project.org
[mailto:r-help-boun...@r-project.org] On Behalf Of Karl Brand
Sent: Wednesday, December 01, 2010 6:35 AM
To: Dimitris Rizopoulos
Cc: r-help@r-project.org
Subject: [R] attempted merge() returns: cannot coerce type
'closure' to vector of type 'any'
Hi Dimtris and esteemed useRs,
I don't understand why i get this error message when
attempting to use
merge() -
> temp<- merge(x, y[,17, drop=FALSE], by=rownames, sort=FALSE)
Error in as.vector(x, mode) :
cannot coerce type 'closure' to vector of type 'any'
It should work because:
> all(rownames(x[order(rownames(x)),]) ==
+ rownames(y[order(rownames(y[,17, drop=FALSE])),17,
drop=FALSE]) ....
[TRUNCATED]
[1] TRUE
also:
> class(x); class(y[,17, drop=FALSE])
[1] "matrix"
[1] "matrix"
Any idea why i cant use merge() in the normal way here? I'm forced
to
add the column using:
temp.b<- cbind(x, y[match(rownames(x), rownames(y)),17])
All insights appreciated for this leaRner,
cheers,
Karl
--
Karl Brand<k.br...@erasmusmc.nl>
Department of Genetics
Erasmus MC
Dr Molewaterplein 50
3015 GE Rotterdam
P +31 (0)10 704 3211 | F +31 (0)10 704 4743 | M +31 (0)642 777 268
______________________________________________
R-help@r-project.org mailing list
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PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
Karl Brand <k.br...@erasmusmc.nl>
Department of Genetics
Erasmus MC
Dr Molewaterplein 50
3015 GE Rotterdam
P +31 (0)10 704 3211 | F +31 (0)10 704 4743 | M +31 (0)642 777 268
______________________________________________
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.
David Winsemius, MD
West Hartford, CT
______________________________________________
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
