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Pass a data.frame column name to a function
...ust use the column name directly:
df <- data.frame(A=1:10, B=2:11, C=3:12)
fun1 <- function(x, column){
max(x[,column])
}
fun1(df, "B")
fun1(df, c("B","A"))
There's no need to use substitute, eval, etc.
You can even pass the desired function as a parameter:
fun1 <- function(x, column...
What is the meaning of the prefix N in T-SQL statements and when should I use it?
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edited May 23 '17 at 12:10
Community♦
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answered Apr 5 '12 at 8:20
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Add leading zeroes/0's to existing Excel values to certain length
...0s work with it...
– Shadow
Nov 23 '12 at 4:29
10
@shadow Hexadecimal number for Excel is a strin...
Difference between CSS3 transitions' ease-in and ease-out
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edited Feb 12 '14 at 2:40
answered Mar 9 '12 at 15:03
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How to allow keyboard focus of links in Firefox?
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edited Sep 21 '18 at 12:11
doppelgreener
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Can anyone explain python's relative imports?
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edited Aug 14 '12 at 18:41
answered Dec 16 '09 at 23:37
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Passing arguments forward to another javascript function
... Shnatsel
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answered Oct 12 '10 at 12:22
Nick Craver♦Nick Craver
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How to get and set the current web page scroll position?
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answered Nov 4 '10 at 12:59
SLaksSLaks
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How to create byte array from HttpPostedFile
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12
It won't work if your file InputStream.Position is set to the end of the stream.
My additional ...
How do I make Git treat a file as binary?
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edited Oct 16 '14 at 12:42
ryenus
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answered ...