srid

How do you know what SRID to use for a shp file?

I am trying to put a SHP file into my PostGIS database, the the data is just a little off. I think this is because I am using the wrong SRID. The contents of the PRJ file are as follows: GEOGCS["GCS_North_American_1983", DATUM["D_North_American_1983", SPHEROID["GRS_1980",6378137.0,298.257222101]], PRIMEM["Greenwich",0.0], UNIT["Degree",...

What spatial SRID is this? (trying to convert a .shp file to WSG84)

Hi folks, I'm trying to import some Shapefile mapping data into Sql2008. Before I do that, I need to convert it to WGS84 / SRID 4326, because all my existing data is in this format. This is the source file info: GEOGCS["GCS_GDA_1994",DATUM["D_GDA_1994", SPHEROID["GRS_1980",6378137,298.257222101]], PRIMEM["Greenwich",0],UNIT["D...

making a call to add_postgis_srs before GeoDjango model tables get created

Here is my model definition for a model in a GeoDjango app (with a PostGIS 8.4 database) meant to represent a Chicago neighborhood boundary: class Neighborhoods(models.Model): objectid = models.IntegerField() pri_neigh_field = models.CharField(max_length=3) pri_neigh = models.CharField(max_length=50) sec_neigh_field = mo...