[ Resending to the list as I fell foul of the too many recipients rule ]
On Thu, 2006-11-30 at 11:34 -0600, Marc Schwartz wrote:
Thanks to Marc, Prof. Ripley, Sebastian and Sebastian (Luque - offline)
for your comments and suggestions.
I noticed that two of the vectors were named and so I
Gavin Simpson wrote:
[ Resending to the list as I fell foul of the too many recipients rule ]
On Thu, 2006-11-30 at 11:34 -0600, Marc Schwartz wrote:
Thanks to Marc, Prof. Ripley, Sebastian and Sebastian (Luque - offline)
for your comments and suggestions.
I noticed that two of the vectors
On Fri, 2006-12-01 at 12:13 +0100, Peter Dalgaard wrote:
Gavin Simpson wrote:
snip /
I just don't understand what is going on with data.frame.
I think there is something about the data you're not telling us...
Yes, that I was doing something very, very silly that I thought would
work
On Thu, 2006-11-30 at 19:26 +, Gavin Simpson wrote:
On Thu, 2006-11-30 at 11:34 -0600, Marc Schwartz wrote:
Thanks to Marc, Prof. Ripley, Sebastian and Sebastian (Luque - offline)
for your comments and suggestions.
I noticed that two of the vectors were named and so I removed the names
Hi,
In a function, I compute 10 (un-named) vectors of reasonable length
(4471 in the particular example I have to hand) that I want to combine
into a data frame object, that the function will return.
This is very slow, so *I'm* doing something wrong if I want it to be
quick and efficient, though
On Thu, 2006-11-30 at 17:00 +, Gavin Simpson wrote:
Hi,
In a function, I compute 10 (un-named) vectors of reasonable length
(4471 in the particular example I have to hand) that I want to combine
into a data frame object, that the function will return.
This is very slow, so *I'm* doing
If you are prepared to give up most of the sanity checks, see this at the
bottom of read.table:
## this is extremely underhanded
## we should use the constructor function ...
## don't try this at home kids
class(data) - data.frame
row.names(data) - row.names
data
Hi!
I don't know for sure - and I have not tried it yet, but how about
allocating a matrix which will hold all stuff, then put all vectors in
it and at last assign some dimnames to it:
data - matrix(0, ncol=5, nrow=length(vec1))
data[1,] - vec1
...
dimnames(data) - list(c(1,2,3,4,5), )
Gavin,
One more note, which is that even timing the direct data frame creation
on my system with colnames, again using the same 10 numeric columns, I
get:
system.time(DF1 - data.frame(lc.ratio = Col1, Q = Col2, fNupt = Col3,
rho.n = Col4, rho.s = Col5,
