[R-sig-Geo] writeOGR() to shapefile and dates/times classes

[Roger Bivand]

On Sun, 24 Jun 2012, Agustin Lobo wrote:

> writeOGR() issues an error if the Spatial Points/Polygon Dataframe
> has any variables of classes dates or times. While I understand that
> this is rather a problem of using a bad format (shapefile) that does not accept
> these kind of variables, I suggest
> the developer could consider that the necessary conversion to character
> were done automatically by writeOGR() and just issue a warning message
> instead of an error.

Please provide a reproducible example, and sessionInfo() output.

The function already converts the standard date and time classes POSIXct, 
POSIXlt, Date and POSIXt to character. If the user chooses a non-base 
date-time representation, arguably the user should then convert to a base 
class first, otherwise rgdal would depend on zoo, xts, lubridate or 
whatever.

Roger

>
> Thanks!
>
> Agus
>
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-- 
Roger Bivand
Department of Economics, NHH Norwegian School of Economics,
Helleveien 30, N-5045 Bergen, Norway.
voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no