One way is to use %in% like below:
df<-data.frame(var.a=rnorm(10), var.b=rnorm(10),var.c=rnorm(10))
print(df)
df <- df[,!(names(df) %in% c('var.a','var.b')),drop=FALSE]
print(df)
On Tue, Feb 24, 2009 at 3:10 PM, Sean Zhang wrote:
Dear R-helpers:
I am an R novice and would appreciate answer to the following
question.
Want to delete many variables in a dataframe.
Am able to delete one variable by assigning it as NULL
Have a large number of variables and would like to delete them without
using
a for loop.
Is there a command/function which does this job?
Many thanks in advance.
-Sean
#Small Example:
df<-data.frame(var.a=rnorm(10), var.b=rnorm(10),var.c=rnorm(10))
df[,'var.a']<-NULL #this works for one single variable
df[,c('var.a','var.b')]<-NULL #does not work for multiple variables
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and provide commented, minimal, self-contained, reproducible code.