Cheers Bill,
Thank you for the clarificaiton. Prabably showing the str() of these
objects would have made it easier for you see exatly where i was going
wrong. Which as David pointed out, was really a lack of ?merge reading...:)
Karl
On 12/2/2010 5:46 PM, William Dunlap wrote:
I didn't change your "rownames" to "row.names"
because I figured you had the name you wanted
but only forgot to include the quotes. Both "rownames"
and "row.names" are valid inputs, but they mean
different things. Howver, without the quotes you were
passing in the contents of the object called
rownames, which happens to be a function (aka a closure),
not the string "rownames. The quotes are needed to
distinguish between things and names of things.
Some functions (e.g., library() and help()) try
to cover up this difference, leading to occasional
difficulties using them.
Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com
-----Original Message-----
From: Karl Brand [mailto:k.br...@erasmusmc.nl]
Sent: Thursday, December 02, 2010 2:22 AM
To: William Dunlap
Cc: r-help@r-project.org; Dimitris Rizopoulos
Subject: Re: [R] attempted merge() returns: cannot coerce
type 'closure' to vector of type 'any'
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...
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
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.
--
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
--
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.
