[R] evaluate a expression

[Ning Ma]

Thank you and Sunder!

On Sat, May 2, 2009 at 8:49 PM, ronggui <ronggui.huang at gmail.com> wrote:
>> eval(parse(text=expr))
> [1] 15
>
>
> 2009/5/2 Ning Ma <pningma at gmail.com>:
>> Hi,
>>
>> I am new to R. Can anyone tell me how to evaluate an expression stored
>> in a string?
>> such as:
>>> expr <- "3*5"
>> I want to get the result 15.
>>
>> Thanks in advance.
>>
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>
>
>
> --
> HUANG Ronggui, Wincent
> PhD Candidate
> Dept of Public and Social Administration
> City University of Hong Kong
> Home page: http://asrr.r-forge.r-project.org/rghuang.html
>