Visualization

PostGIS 2.0, the new stuff

Session Type: 
Tech Session
Presenter(s): 
Regina Obe, Paragon Corporation
Leo Hsu, Paragon Corporation

We will show the latest coolest stuff in PostGIS 2.0.

Speaker Bio: 

 Leo Hsu and Regina Obe are PostGIS spatial database consultants.  They are also co-authors of the book PostGIS in Action

Schedule info

GeoServer on steroids

Session Type: 
Tech Session
Presenter(s): 
Mr Simone Giannecchini, GeoSolutions
Mr Andrea Aime, GeoSolutions

Setting up a GeoServer can sometimes be deceptively simple. However, going from proof of concept to production requires a number of steps to be taken in order to optimize the server in terms of availability, performance and scalability.

The presentation will show how to get from a basic setup to a battle ready, rock solid installation by showing the ropes an advanced user already mastered. The topics that will be covered in details include:

  • choosing the appropriate output formats to avoid network bottlenecks
  • optimize vector and raster data for the deep multi-resolution displays typical of web GIS
  • optimize styling to provide a good balance between map navigability and performance, identifying common performance pitfalls in the styling options
  • setting up caching with GWC for the background layers, identify layers and situations that are not suitable for caching
  • configuring WMS/WFS/WCS service limits so that no single request can consume too many server resources
  • defend against peak hour load by using the control-flow extension
  • using the monitoring extension to control the server in production and identify sources of trouble (long request, clients making too many/too heavy requests, layers and services used the most that could use more tuning attention)
  • load test a OGC service with JMeter

The presentation will end with real world examples of enterprise deployments of GeoServer implemented by the author as well as its colleagues at GeoSolutions during the years.

Speaker Bio: 

GeoSolutions Founder, OSGEO Charter Member, Simone Giannecchini has been involved with geospatial open source software since early 2004, playing an active role sine early 2005. He has a leadership role in several projects, like GeoServer, GeoTools, ImageIO-Ext and JAI-Tools.

Schedule info

Advanced cartographic map rendering in GeoServer

Session Type: 
Tech Session
Presenter(s): 
Andrea Aime, tech lead, GeoSolutions
Simone Giannecchini, GeoSolutions

Various software can style maps and generate a proper SLD document for OGC compliant WMS like GeoServer to use. However, in most occasions, the styling allowed by the graphical tools is pretty limited and not good enough to achieve good looking, readable and efficient cartographic output.

The presentation aims to provide the attendees with enough information to master SLD documents allowing him to produce amazingly looking maps on his own. SLD will no longer be cartographer's enemy.

Topics that will be covered are as follows:

  • making scales that show different data at different scales, and that change its cartographic rendering as well, by means of multi scale rules
  • using GeoServer extensions to build common hatch patterns and how to control the patterns appears using advanced stroke control over the basic marks
  • line styling beyond the basics, such as cased lines, repeating symbols and hatch patterns
  • leveraging TTF symbol fonts and SVGs to generate good looking point thematic maps, line and fill patterns
  • use the full power of GeoServer label lay-outing tools to build pleasant, informative maps on both point, polygon and line layers, including adding road plates to your map
  • leverage the labelling subsystem conflict resolution engine to avoid overlaps in stand alone point symbology
  • blending charts into a map
  • dynamically transform data during rendering to get more explicative maps without the need to pre-process a large amount of views, such as on the fly extraction of contours, range polygons and wind maps from raster data
  • perform cross layer filtering and parametrize it to generate a generic “paint all points of interest close to the main road” style in which the client can dynamically change the distance.

 

Speaker Bio: 

Andrea Aime has had long involvement in the open source community, first as a user and then as a core developer for the GeoTools and GeoServer project (and as a jai-tools contributor). Andrea's main interests cross through cartographic quality map rendering, spatial data analysis, performance and scalability as well as GIS programming and teaching. 

Schedule info

Dynamic Earth in GRASS7

Session Type: 
Academic Session
Presenter(s): 
Dr Helena Mitasova, North Carolina State University
Eric Hardin

 

Speaker Bio: 

Helena Mitasova is Associate Professor at the Department of Marine, Earth and Atmospheric Sciences, North Carolina State University and a member of GRASS project steering committee.

Schedule info

Are you sure? - Open Source Tools for Uncertainty Enabling the Model Web

Session Type: 
Academic Session
Presenter(s): 
Benjamin Pross, Institute for Geoinformatics, University of Muenster
Dan Cornford

 

Speaker Bio: 

Benjamin Pross is a research associate at the Institute for Geoinformatics of the University of Muenster and active developer at the 52°North Open Source Initiative. 

Schedule info

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