On 2/8/06, Neil Saunders <[EMAIL PROTECTED]> wrote: > Hi Frank - Thanks very much for your continued help. I'm still only a > the learning stage, and so am just having a play trying to get a > working system going. > > For testing purposes, the shapefile file I'm using is here: > http://www.cdc.gov/epiinfo/shape/Cntry00.zip > > What I'd like to do is load this shape file in to a PostGIS database, > then have mapserver render it projected as mercator (WGS84?), > overlayed with points I've got in another table (specified as > Lat/Long). As you can probably tell, most of my lack of understanding > revolves around projections - Are there any good resources you could > point me towards regarding this?
Neil, I think the main gap is that you need to express your EXTENT in meters, which you can manually reproject from lat/long using something like cs2cs (from PROJ.4). There are some good general references about projections at the bottom of: http://proj.maptools.org/ Best regards, -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, [EMAIL PROTECTED] light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent
