Hi all. I don't know if this is a question for this list or the postgis's user list. We have several layers in a postgres/postgis database. Almost all layers are in utm zone 21 south, but we have some data in geographic coordinates. For several years we've data stored in the database with srid=-1 on the geometry_columns table. We had the utm projection defined in the MAP section, and the geographic coordinates projection defined in those LAYER sections corresponding to the layers in geographic coordinates.
<br><br>Today I loaded the spatial_ref_sys table and updated the srid field for those layers that are in geographic coordinates. We took out the projection definition from the LAYER sections corresponding to those layers, and kept the utm projection definition in the MAP section.
<br><br>I thought that, as the proj information is stored in the spatial_ref_sys table and referenced through the geometry_columns table, there was no need to specify it in the .map file, as mapserver could know it from the database layer definition, or maybe postgis could return the geometrys converted to the system specified in the MAP section. Well, in the generated map, all the utm layers are shown, but the geographic coordinates layers are not drawn.
<br><br>Looking in both mapserver's and postgis's documentation and mailing lists I'm almost sure that both assumptions are wrong, and that it's not an error in the proj WKT or something like that. <br><br>So my question is simple: Do i have to specify a projection section in every layer that is not in the same system of that in the map section, or is there a way of making any of the different components that participate in the layer drawing process to reason it?
<br><br>Thanks very much,<br>Antonio<br><br><br>