[R] Strange Expression

[Duncan Murdoch]

On 3/3/2006 7:09 AM, A Mani wrote:
> Hello,
>          I have a dataframe with a column 'col' of expressions of the form
> 2*3+4*5+6*7 and substrings thereof.

Stored in what form?  It sounds from below that they may be character 
vectors or factors.  It would be easier to help if you gave a 
reproducible example.

Duncan Murdoch

> Now
>> eval(2*3+4*5+6*7) is ok.
> But I want it done on that column... nothing seems to work
> Even
>> cil <- dataframe$col
>> eval(cil[1])
> 2*3+4*5+6*7
> 
> I want the elements of the column evaluated.
> 
> Thanks,
> 
> A. Mani
> Member, Cal. Math. Soc
> 
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> 
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