Holy Cats, those were four quick responses! And the question,
basically, is answered:
1. When in doubt, try quoting column names where you would try using
unquoted column indexes.
2. Subset() seems, overall, the most flexible analog to Stata's
variable-referencing syntax.
I appreciate the help. I
On Dec 5, 2009, at 11:30 AM, baptiste auguie wrote:
Hi,
Try this,
cor(pollute[ ,c("Pollution","Temp","Industry")])
and ?"[" in particular,
"Character vectors will be matched to the names of the object "
John-Paul;
In the time it took me to compose this, I see that others have already
po
Alternatively, you can use subset(), which supports the ":" operator
for the 'select' argument:
> cor(subset(iris, select = Sepal.Length:Petal.Length))
Sepal.Length Sepal.Width Petal.Length
Sepal.Length1.000 -0.11756980.8717538
Sepal.Width-0.1175698 1.000 -
Dear John-Paul,
Take a look at https://stat.ethz.ch/pipermail/r-help/2009-July/204027.html It
contains different ways to do (in part) what you want.
HTH,
Jorge
On Sat, Dec 5, 2009 at 11:22 AM, John-Paul Ferguson <> wrote:
> I apologize for how basic a question this is. I am a Stata user who
> h
As baptiste noted, you can do
cor(pollute[ ,c("Pollution","Temp","Industry")]).
But
cor(pollute[,"Pollution":"Industry"])
will not work. For that you can do
cor(pollute[
,which(names(pollute)=="Pollution"):which(names(pollute)=="Industry")])
-Ista
On Sat, Dec 5, 2009 at 11:22 AM, John-Paul
Hi,
Try this,
cor(pollute[ ,c("Pollution","Temp","Industry")])
and ?"[" in particular,
"Character vectors will be matched to the names of the object "
HTH,
baptiste
2009/12/5 John-Paul Ferguson :
> I apologize for how basic a question this is. I am a Stata user who
> has begun using R, and th
I apologize for how basic a question this is. I am a Stata user who
has begun using R, and the syntax differences still trip me up. The
most basic questions, involving as they do general terms, can be the
hardest to find solutions for through search.
Assume for the moment that I have a dataset tha
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