[R] Adding a column to an **empty** data.frame
    S Ellison 
    S.Ellison at LGCGroup.com
       
    Wed Nov  2 15:07:49 CET 2016
    
    
  
> Now, how can I add a third column name to that empty df?
You could use functions that generate zero-length objects. Examples:
df$newv <- vector(mode="numeric") #logical by default, so <-vector() would give you a zero-length logical
df$newi <- integer()
df$newf <- factor()
S Ellison
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