[R] converting string fractions to numerics

[baptiste auguie]

Hi,

I believe you want

eval(parse(text="pi/2"))

a word of warning exemplified in

eval(parse(text="library(fortunes) ; fortune(106)"))

HTH,

baptiste



On 19 October 2011 19:30, Erin Hodgess <erinm.hodgess at gmail.com> wrote:
> Dear R People:
>
> Suppose I have the following:
>
> "pi/2"
>
> and I would like it to be 1.57.....
>
> Using as.numeric, here is my result:
>
>> as.numeric("pi/2")
> [1] NA
> Warning message:
> NAs introduced by coercion
>>
>
> Is there a way to produce the numeric result, please?
>
> Thanks,
> Erin
>
>
> --
> Erin Hodgess
> Associate Professor
> Department of Computer and Mathematical Sciences
> University of Houston - Downtown
> mailto: erinm.hodgess at gmail.com
>
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