Dear All,
This sounds simple but can't figure out a good way to do it.
Let's say that I have an empty data frame "df":
## creates the df
df = data.frame( id=1, data=2)
## empties the df, perhaps there is a more elegant way to create an empty
df?
df = df[-c(1),]
> df
[1] id data
<0 rows> (or 0-length row.names)
Now, how can I add a third column name to that empty df?
Normally I would use df$new.col = 1
But here I can't use this because it's empty!
I tried df$new.col=NULL -- this doesn't give an error but doesn't add the
column.
Thanks for your help,
Emmanuel
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