Mapping Hacks

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Chapter 8, Building the Geospatial Web

#89 Publish Your Geodata to the Web with GeoServer

HACK

Next go to the FeatureType page and hit New. The tables of your PostGIS

database should show up appended to the DataStore ID that you gave your

newly created Store. Select one that you would like to make available to the

geospatial web.

After hitting New, you will be taken to the FeatureTypeEditor screen. This

information is primarily for the Capabilities document; it is the meta-infor-

mation about the FeatureType. The SRS is probably the most important

field; it should be an EPSG number—a serial number allocated by the Euro-

pean Petroleum Survey Group—for the projection of your data. You can

also edit the schema information to hide certain attributes and to make oth-

ers mandatory. GeoServer generates the DescribeFeatureType responses

automatically, depending on how you configure these attributes. After edit-

ing your feature, submit it and click Apply. Your feature should then show

up in the Capabilities documents for WMS and WFS, and you can even

query it.

If in doubt, you can use an SRS of EPSG:4326, which corre-

sponds to geographic coordinates (i.e. lat/long) referenced to

the WGS84 spheroid and datum. If you need to use a differ-

ent spatial reference system, try looking through the con-

tents of the

spatial_ref_sys table in your PostGIS database

to see what other EPSG codes are standard.

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