I found how to initialize an empty data frame with 3 or 4 dimensions. It's like
df <- data.frame(Date=as.Date(character()),
File=character(),
User=numeric(),
stringsAsFactors=FALSE)
However, What's the most effective way to initialize an empty data.frame with a lot of column names. like
mynames <- paste("hello", c(1:10000))
The wrong way I tried is:
df <- data.frame(mynames=numeric())
Thanks a lot beforehand
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