R help - Apr 2003 - wait, t(sapply()) does not work

I just noticed that the code

data.frame(t(sapply(tester.L, function(x) x <- x[1,])))

does not result in a nice dataframe, although is.data.frame gives TRUE. It works
on the small example in the previous emails, but something weird happens for a
larger dataset.

remko

What are the symptoms?

Do "sapply(tester.L, data.class)".  If some of the attributes of 
tester.L are data.frames, then do, e.g., "sapply(tester.L[[1]], 
data.class)".  If the objects passed to "function(x) x <-
x[1,]" are
data.frames, the ouput of "function(x)x <- x[1,]" may be a list,
not a
vector, with attributes of different classes.

Spencer

Remko Duursma wrote:
> I just noticed that the code
> 
> data.frame(t(sapply(tester.L, function(x) x <- x[1,])))
> 
> does not result in a nice dataframe, although is.data.frame gives TRUE. It
works on the small example in the previous emails, but something weird happens
for a larger dataset.
> 
> remko
> 
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