[R] stringr package question

[Mauricio Romero]

thanks.... that makes sense... in the previous version of R it worked for
some reason.

On Thu, Aug 13, 2015 at 4:33 PM, Sarah Goslee <sarah.goslee at gmail.com>
wrote:

> Hi,
>
> The + is a special character in regular expressions. If you want to
> match a literal + you need to escape it:
>
> str_extract("+proj=utm +zone=19 +datum=WGS84 +units=m +no_defs
> +ellps=WGS84 +towgs84=0,0,0", "\\+proj=[a-zA-Z0-9]*")
>
> Sarah
>
>
> On Thu, Aug 13, 2015 at 2:55 PM, Mauricio Romero
> <mauricioromerolondono at gmail.com> wrote:
> > Hi,
> >
> > I'm running R 3.2.1 and im having an unexpected problem... when I run the
> > follwing code it returns an error
> >
> > library(stringr)
> > str_extract("+proj=utm +zone=19 +datum=WGS84 +units=m +no_defs
> +ellps=WGS84
> > +towgs84=0,0,0", "+proj=[a-zA-Z0-9]*")
> >
> > But I can't find whats wrong with my code.
> >
> > Thanks
> >
> > Mauricio
> >
>

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