Hi I'm new to geosrever. I'm planning to develop a web-gis application with
these capabilities:
- visualization on google map
- spatial querying on the fly (like: which are the polygons that touch a
specific polygon)
I want to use postgre/postgis as repository for my spatial data, geoserver
and the google maps api.
I know that geoserver gets data directly from postgis and so my web app will
communicate with geoserver. But I don't undestand how it works when I have
to run a spatial query? Can geoserver do spatial querying?
thank's
bye
d.
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Hi,
You should look at the openlayers library for the front end. It will do all of what your application requires. It can use the google maps base map, and overlay vector data from geoserver or a variety of other sources on top of it.
As for running spatial queries against geoserver, yes it will do that. On the client side you have to build up a "filter" be it spatial or attribute based. Openlayers will translate the filter into a WFS request and pull the data in from geoserver, which can be getting the data directly from postgis.
For exactly how to build up filters you might want to check out the openlayers documentation, or start asking questions on their mailing list.
Hope that helps.
-Justin
ddddssss wrote:
Hi I'm new to geosrever. I'm planning to develop a web-gis application with
these capabilities:
- visualization on google map
- spatial querying on the fly (like: which are the polygons that touch a
specific polygon)
I want to use postgre/postgis as repository for my spatial data, geoserver
and the google maps api.
I know that geoserver gets data directly from postgis and so my web app will
communicate with geoserver. But I don't undestand how it works when I have
to run a spatial query? Can geoserver do spatial querying?
thank's
bye
d.
--
Justin Deoliveira
OpenGeo - http://opengeo.org
Enterprise support for open source geospatial.
thank's for tips!!
bye
Justin Deoliveira-6 wrote:
Hi,
You should look at the openlayers library for the front end. It will do
all of what your application requires. It can use the google maps base
map, and overlay vector data from geoserver or a variety of other
sources on top of it.
As for running spatial queries against geoserver, yes it will do that.
On the client side you have to build up a "filter" be it spatial or
attribute based. Openlayers will translate the filter into a WFS request
and pull the data in from geoserver, which can be getting the data
directly from postgis.
For exactly how to build up filters you might want to check out the
openlayers documentation, or start asking questions on their mailing list.
Hope that helps.
-Justin
ddddssss wrote:
Hi I'm new to geosrever. I'm planning to develop a web-gis application
with
these capabilities:
- visualization on google map
- spatial querying on the fly (like: which are the polygons that touch a
specific polygon)
I want to use postgre/postgis as repository for my spatial data,
geoserver
and the google maps api.
I know that geoserver gets data directly from postgis and so my web app
will
communicate with geoserver. But I don't undestand how it works when I
have
to run a spatial query? Can geoserver do spatial querying?
thank's
bye
d.
--
Justin Deoliveira
OpenGeo - http://opengeo.org
Enterprise support for open source geospatial.
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