Another method :
> DF[DF$row1 == "x", ]
row1 row2 row3
1 x 2 3
2 x 1 4
On Dec 15, 2008, at 8:51 PM, Jorge Ivan Velez wrote:
Dear Jörg,
Try this:
# Data
DF=read.table(textConnection("
row1 row2 row3
x 2 3
x 1 4
y 5 3
y 2 3"),header=TRUE)
closeAllConnections()
# Splitting
res=with(DF,split(DF,row1))
res
# To access the first data.frame just type
res$x
See ?split for more details.
HTH,
Jorge
On Mon, Dec 15, 2008 at 8:43 PM, Jörg Groß <jo...@licht-malerei.de>
wrote:
Hi,
I have a data frame with several columns.
Now I want to transfer the data into a new variable (also a data
frame),
but I only want a part of the data, defined by a rule ...
for example; I have following data frame:
row1 row2 row3
x 2 3
x 1 4
y 5 3
y 2 3
I know want a data frame, only with lines containing x in row1.
I know how to do that for one row (f <- d$row2[d$row1=="x"]).
But how can I do that for all rows in one step?
So that I get this for f:
row1 row2 row3
x 2 3
x 1 4
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and provide commented, minimal, self-contained, reproducible code.
______________________________________________
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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.
