Spatial Databases - Desktop GIS: Mapping the Planet with Open Source Tools - page 107

Figure 7.7: PostGIS connect dialog box in uDig

7.5 Using PostGIS and uDig

You can use uDig to display PostGIS layers—which is no surprise since
both come out of Refractions Research. 10 If you look back to Figure 3.1 ,
on page 40 , you'll recall that PostGIS was one of the choices when
adding data to the map.

Adding a PostGIS layer is pretty easy—you just have to know the par-
ticulars of your database location and connection parameters, just as
we did with QGIS. In Figure 7.7 , you can see the uDig PostGIS connec-
tion dialog box with our connection parameters filled in. Once we click
Next, we are presented with a list of layers in the database that can be
added to the map. uDig doesn't currently support the filtering of Post-
GIS layers, so we can't create a “virtual” layer. Once the layer is added
to the map, you can symbolize it just like we discussed in Section 3.2 ,
Rendering a Story, on page 42 , including the use of color palettes.

Once you've made a connection, uDig keeps it available in the cata-
log, accessible at the bottom of catalog, accessible at the bottom of the

10. http://refractions.net