bogdan romocea br44114 at gmail.com writes:
Here's an example.
dfr - data.frame(A1=1:10,A2=21:30,B1=31:40,B2=41:50)
vars - colnames(dfr)
for (v in vars[grep(B,vars)]) print(mean(dfr[,v]))
At first I did not know why you had bothered with the (dfr[,v])) part of the
command. I thought you
On 5/4/06, Farrel Buchinsky [EMAIL PROTECTED] wrote:
bogdan romocea br44114 at gmail.com writes:
Here's an example.
dfr - data.frame(A1=1:10,A2=21:30,B1=31:40,B2=41:50)
vars - colnames(dfr)
for (v in vars[grep(B,vars)]) print(mean(dfr[,v]))
At first I did not know why you had
How does one create a vector whose contents is the list of variables in a
dataframe pertaining to a particular pattern?
This is so simple but I cannot find a straightforward answer.
I want to be able to pass the contents of that list to a for loop.
So let us assume that one has a dataframe whose
On Wed, 2006-05-03 at 10:46 -0400, Farrel Buchinsky wrote:
How does one create a vector whose contents is the list of variables in a
dataframe pertaining to a particular pattern?
This is so simple but I cannot find a straightforward answer.
I want to be able to pass the contents of that list
Farrel Buchinsky wrote:
How does one create a vector whose contents is the list of variables in a
dataframe pertaining to a particular pattern?
This is so simple but I cannot find a straightforward answer.
I want to be able to pass the contents of that list to a for loop.
So let us assume
Column names in iris that contain the string Sepal:
grep(Sepal, names(iris), value = TRUE)
On 5/3/06, Farrel Buchinsky [EMAIL PROTECTED] wrote:
How does one create a vector whose contents is the list of variables in a
dataframe pertaining to a particular pattern?
This is so simple but I
To: r-help@stat.math.ethz.ch
Subject: [R] Listing Variables
How does one create a vector whose contents is the list of
variables in a
dataframe pertaining to a particular pattern?
This is so simple but I cannot find a straightforward answer.
I want to be able to pass the contents of that list
Uwe Ligges [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
vnames - paste(Height, 1:20, sep=.)
Interesting but not suitable. It creates a name even if such a variable does
not exist. I have 6000 variables. The numeric component of the variable name
goes from 0 to about 1000.
