[R-sig-eco] plot data on base of lon&lat

[Sarah Goslee]

I don't completely understand your question, but is it perhaps that
west longitude is often represented as negative?

Otherwise, please provide a reproducible example, using data from the
cogizam package if you'd like, or at least a clear guide to where
you've found this example and how it differs from your own data.

Sarah

On Thu, Jul 5, 2012 at 11:38 AM, Mahnaz Rabbaniha <rab.mahnaz at gmail.com> wrote:
> Hi groups
>
>
> i want plot of phytoplankton density on base of Lon & lat, as same as
> the description on the cozigam package.
>
> but the main problem is the form of matrix Lon parameters in the example
> on eggdata that is negative ,how changed the longitude to this form ?
>
> thanks all
>
>
>
> Mahnaz
>

-- 
Sarah Goslee
http://www.functionaldiversity.org