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Back in the days of R 2.6, if you did this, you got this: > z=function(x){x*2} > z() Error in z() : argument "x" is missing, with no default But now in this decade we get (for R 2.9 and 2.10): > z=function(x){x*2} > z() Error in z() : element 1 is empty; the part of the args list of '*' being evaluated was: (x, 2) Now I can see (after thinking about it)

I'm struggling to find any help on this seemingly simple question - how does one read data with percentage (%) or currency (?,$ etc.) signs? When I try to read a data file which has any of those symbols in the data fields, they are read as characters rather than values. Is there a function or library which can deal with such values? As an example, I use this sample from one of chinna's