2 data frames - list in one out put , matrix in another ??
Hi as I do not know what class is labelled and not knowing about your data I just try to give you some hints. What says str(adata) and str(bdata) about structure of your data? It can be possible that in second case the structure of resulting table can be formed into matrix and apply probably does this coercion in accordance with Details section of help page. But this is only a guess. HTH Petr
On 26 Feb 2007 at 14:56, John Kane wrote:
Date sent: Mon, 26 Feb 2007 14:56:07 -0500 (EST) From: John Kane <jrkrideau at yahoo.ca> To: R R-help <r-help at stat.math.ethz.ch> Subject: [R] 2 data frames - list in one out put , matrix in another ??
I have two more or less parallel dataframes that are
giving me different results on one subset of
variables. I know that I assembled the 2 dataframes
slightly differently but I don't see why I am getting
this result because one set of variables are labelled
and the other is not. Variable names are the same,
etc. as far as I can acertain. The only diffference
seems to be that bdata variables are labelled.
About now I really don't care which I get but I would
like them to be the same. Can anyone suggest what I
am doing wrong or should be looking at?
Windows XP , R 2.4.1 Using Hmisc and gtools as well as
the basic R installation.
Problem
load(adata)
fn1 <- function(x) {table(x)}
jj <-apply(adata[,110:127], 2, fn1)
OUTPUT jj is aa list of 18 tables
Examine a variable:
> typeof(adata$act.toy)
[1] "integer"
class(adata$act.toy)
[1] "integer"
load(bdata
fn1 <- function(x) {table(x)}
kk <-apply(bdata[,94:111], 2, fn1)
OUTPUT jj is a matrix 2 X 18
class(bdata$act.toy)
[1] "labelled"
typeof(bdata$act.toy)
[1] "integer"
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Petr Pikal petr.pikal at precheza.cz