[R] evaluate a expression

[ronggui]

> 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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> and provide commented, minimal, self-contained, reproducible code.
>



-- 
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