On 10/18/05, Biz King <[EMAIL PROTECTED]> wrote:
The problem I have is that I am being given GPS (WGS84) co-ordinates and need to convert them
for use within the same data sets.
Are these WGS84 coordinates in a shapefile or some GIS data format already? If so, Mapserver can handle data in disparate projections by reprojecting "on-the-fly":
1. Your MAP's projection ("init=epsg:4326") will be the common output projection.
2. Your LAYER's projection will define the actual native coordinate system of the dataset (One would be UTM the other latlong, etc) If the layer projection differs from the map projection, it will be reprojected everytime you request an image.
The reprojection is pretty fast but keep in mind that reprojecting HUGE datasets will slow things down so it's best to preprocess them in that case. A tool like ogr2ogr (http://gdal.maptools.org/ogr/ogr2ogr.html) can reproject vector data.
Hope this helps,
--
Matt Perry
[EMAIL PROTECTED]
http://www.perrygeo.net
