[R] named character question

[Joshua Wiley]

Hi Erin,

The first element of the character vector is a string.  You cannot
extract specifically characters from a string; try something like
?nchar

or perhaps better use regular expressions to extract things between
commas after two characters (or whatever logical rule accurately gets
the zip code).

Cheers,

Josh

On Sun, Aug 12, 2012 at 8:33 PM, Erin Hodgess <erinm.hodgess at gmail.com> wrote:
> Dear R People:
>
> Here is a goofy question:
>
> I want to extract the zip code from an address and here is my work so far:
>
>> add1
>                   results.formatted_address
> "200 W Rosamond St, Houston, TX 77076, USA"
>> add1[1][32:36]
> <NA> <NA> <NA> <NA> <NA>
>   NA   NA   NA   NA   NA
>> str(add1)
>  Named chr "200 W Rosamond St, Houston, TX 77076, USA"
>  - attr(*, "names")= chr "results.formatted_address"
>>
>
> What am I not seeing, 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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-- 
Joshua Wiley
Ph.D. Student, Health Psychology
Programmer Analyst II, Statistical Consulting Group
University of California, Los Angeles
https://joshuawiley.com/