Merging Regions of a shapefile

[Neil Saunders]

Hi Brock,

Thanks for your reply; However I've tried using PostGIS but could't
get the shapes to actually "merge" together. Ideally what I'd like to
do is have a tool such as OpenEV in to which I could load my
shapefile, select a given number of *adjacent* regions, and merge
selected regions to a single region, if you catch my drift. I'm
beginning to think that it may not be possible... :(

Thanks once again for you input!

Cheers,

Neil

On 1/16/06, Brock Anderson <banders at refractions.net> wrote:
> Neil,
>
> I tend to use Postgres/PostGIS for this kind of processing.
>
> For example:
>
> Load the data into postgres like this:
>
>    shp2pgsql <loader options here> england.shp england_table | psql
>
> Then dump it out again into several shapefiles. Use an SQL statement to
> select the regions to include in each file:
>
>    pgsql2shp <dumper options here> england_table "select * where ..."
>    pgsql2shp <dumper options here> england_table "select * where ..."
>    pgsql2shp <dumper options here> england_table "select * where ..."
>
> Brock
>
> Neil Saunders wrote:
>
> >Hi Folks,
> >
> >I've got a map of England as a shapefile, containing regions for each
> >county. What I'd like to do is merge selected regions in to a larger
> >region (E.g Devon, Somerset, Cornwall etc into "Westcountry").
> >
> >Does any one know a simple (Preferably GUI based) way of achieving this?
> >
> >Thanks in advance,
> >
> >Neil.
> >
> >
>
>