Looks good, this is what I need for a quick start; thank you!
One more question: If you issue a getFeatureInfo Request to Geoserver - what does the pregeneralized module do? Will it read the Attribute Information a generalized dataset or will it use the original one? I am asking because a custom generalisation process might merge features an thus discard the original attributes.
Cheers, Matthias Am 26.10.2011 02:10, schrieb christian.muel...@nvoe.at:
Forgot the link to the tutorial http://osgeo-org.1803224.n2.nabble.com/attachment/6137141/0/pregen_tutorial.html Zitat von Matthias Müller <matthias_muel...@tu-dresden.de>:Hi Christian, thanks for the hint and appreciation for your work. I am planning to use this module on a PostGIS Datastore - if you have a documentation I'd really like to read it. Right now I am diving into the subtleties of feature generalization. Decimal degrees are a bit tricky as the "real" generalisation distances increase towards the equator. The choice is to either get too much detail when reqesting data at medium or high latitudes or loose detail around the equator. (I'll first try the conservative choice and check the response times).The module chooses the generalization level for itself at runtime. The idea is not to draw a pixel multiple times for a given pixel dimension (WMS request as an example). The amount of net traffic is reduced and you have less memory and cpu consumption.Cheers, Matthias Am 25.10.2011 17:16, schrieb christian.muel...@nvoe.at:Hi, I am the developer. The distance unit is taken from the coordinate system. Decimal degrees for wgs84. What is your backend store, I hope you are not working with shape files. Here is a postgis tutorial, until now I had not the time to write an official one. This tutorial can be adapted to other databases as well. Cheers Christian Zitat von Matthias Müller<matthias_muel...@tu-dresden.de>:Hi, does anybody have experience with the pregeneralized datastore? I would really like to try this one a larger dataset which contains complex polygons in WGS84. The critical parameter for this module is the "generalisation distance". - But what is the unit for that distance? Is it in dataset units (degrees in the case of WGS84 source) or is it in meters? Thanks, Matthias---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program. ------------------------------------------------------------------------------ The demand for IT networking professionals continues to grow, and the demand for specialized networking skills is growing even more rapidly. Take a complimentary Learning@Cisco Self-Assessment and learn about Cisco certifications, training, and career opportunities. http://p.sf.net/sfu/cisco-dev2dev _______________________________________________ Geoserver-users mailing list Geoserver-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geoserver-users---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.
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