GEO

Developer corner: cross layer filtering coming down to GeoServer

Blog ‐ Posted on 04.02.2011 by simone giannecchini

Ever needed to find the answer to a question involving the spatial relationship between two layers? Something like "get me all the coffe shops withing 100 meters of the subway M exits?" Or "show me all the industrial buildings in counties X, Y and Z"?Both of those queries require finding features in one layer, possibly with an attribute filter, and then locate all the locate all the features in another layer that have some kind of spatial relationship with the first result set.This is known as a spatial join and it's used to find object that do relate with each...

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Developers Corner: Improvements to the rendering engine on upcoming GeoServer 2.1/GeoTools 2.7

Blog ‐ Posted on 04.02.2011 by simone giannecchini

In this installment we are going to look into the rendering speed improvements featured in the the upcoming GeoServer 2.1/GeoTools 2.7.0 release.We recently talked about a very significant one already: raster reprojection performance has skyrocketed, providing an overall speedup factor of four to six on the overall reprojected WMS request chain (if you want to know about the pure GeoTools reprojection operation speedup, it's more alike a hundred times faster).What you might not know is that the above is coupled by another speedup that we made for the WMS shootout 2010: the "direct rendering path", which makes GeoServer into a...

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GeoSolutions YouTube channel

Blog ‐ Posted on 03.02.2011 by simone giannecchini

Hi all,at GeoSolutions we decided to create a YouTube channel in order to have common repository for the videos that we make sometimes to demonstrate and/or explain new functionalities for the software we develop.You can reach the channel here.Enjoy!The GeoSolutions team.

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Developers Corner: Improving GeoServer WMS Cascading Support

Blog ‐ Posted on 02.02.2011 by simone giannecchini

Hi all,The ability to server WMS layers from a remote WMS server through a Geoserver installation (a.k.a. Cascading WMS) has been one of the latest improvements in Geoserver world in last couple of months. You can read about it more in one of our previous blog, where the basics have been explained already.GeoSolutions team has since been improving the existing state and introduced some new features. A few patches have been created to fix some important issues: Enabling cascading layer to be included in layer groups (GEOS-4273)Make GetFeatureInfo requests work again on cascading servers (GEOS-4301)Make GetFeatureInfo requests work on older...

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A new home for the ImageIO-Ext project

Blog ‐ Posted on 31.01.2011 by simone giannecchini

Dear All,after a long wait a new home has been finally created by Oracle for the ImageIO-Ext project on the new Java.net infrastructure. You can reach it here.For the records the Image I/O-Ext project extends the Java's ImageI/O framework capabilities by providing access to new raster formats directly or through the integration of other frameworks and libraries, like GDAL, JMagick (experimental) and Kakadu for JPEG2000.The project is Open Source but commercial-friendly, part of the code is released under an LGPL license, some other parts (namely, derivative work from Oracle's imageio source code) are licensed under BSD license.This work has been...

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