On 12-06-22 5:09 PM, Joseph Boyer wrote:
Why doesn't this work?
David gave you a solution that works. The answer to this question is
that unlike SAS, R is a computing language that has an idea of variable
scoping: when you modify the argument df in DropLikeSAS, you are making
local changes, not global ones.
Duncan Murdoch
#Drop a variable name from a data frame
DropLikeSAS<- function(x,df) {
df[[x]]<- NULL
0
}
DropLikeSAS("VarName", DataFrameName)
Try it. The column VarName will not be deleted from the data frame
DataFrameName.
But
x<- "VarName"
DataFrameName[[x]]<- NULL
Works.
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