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21:01 FOSS4G, Open Source Geospatial Foundation (OSGeo) Englisch 2014

Creating Map Style & Visibility Rules from Statistics

Map style, label, and visibility rules, especially those aimed at differentiating "important" classes of features from "minor" ones, can be derived from statistical functions performed on feature attributes. If the source data classification scheme is not already strong in prioritizing features how we want to view them, then style patterns may emerge from calculations over an assortment of counts, sums, averages, and other measurements. We will begin with a quick examination of popular open source web and desktop mapping engines -- do their configuration capabilities include formal constructs for deriving rules from statistics? Or must the developer arrive at "this looks right" through trial and error? We'll extend the discussion to specific data distribution patterns that can be exploited for styling. We're accustomed to setting line styles, symbol and font sizes, colors, and visibility at different scales. The bell curve resulting from a query may point us to where we make the scale breaks, or toward how much color or size contrast to employ in order to make the best presentation from the particular data we are displaying. Perhaps we can arrange our queries, thereby grouping our features a certain way, to aim for an "ideal" curve that is already known to produce pleasing results.A simple set of query tools for streamlining style assists from statistics will be used to create a few examples from troublesome data.
  • Erscheinungsjahr: 2014
  • Herausgeber: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Sprache: Englisch
1:11:54 FOSS4G, Open Source Geospatial Foundation (OSGeo) Englisch 2014

Open Source Geospatial Foundation - Annual General Meeting

  • Erscheinungsjahr: 2014
  • Herausgeber: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Sprache: Englisch
56:25 FOSS4G, Open Source Geospatial Foundation (OSGeo) Englisch 2014

OSGeoLive: An Overview of the best Geospatial Open Source Software

This presentation provides an overview of the breadth of quality geospatial open source applications, which are available for the full range of geospatial use cases, including storage, publishing, viewing, analysis and manipulation of data.

The presentation is based upon documentation from OSGeoLive, which is a self-contained DVD, USB thumb drive and Virtual Machine, based on Lubuntu GNU/Linux. ÊIt includes over 50 of the best geospatial, open source applications, pre-configured with data, project overviews and quick-starts, translated into multiple languages. It is an excellent tool for demonstrating Geospatial Open Source, using in tutorials and workshops, or providing to potential new users.

This presentation is very useful for anyone wishing to gain a high level understanding of the breadth of Geospatial Open Source available, and is often presented at the start of spatial conferences to help attendees select targeted presentations later in the conference.

  • Erscheinungsjahr: 2014
  • Herausgeber: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Sprache: Englisch
36:45 FOSS4G, Open Source Geospatial Foundation (OSGeo) Englisch 2014

Introduction to the geospatial goodies in Elasticsearch

In this session we'll introduce how you can work with spatial data in Elasticsearch - The Open Source, distributed, RESTful Search Engine. We'll provide a general introduction on how to index spatial data into Elasticsearch, then cover off on using spatial query and filters, before finishing up showing you how you can visualise and interact with spatial data stored in Elasticsearch using Kibana.
  • Erscheinungsjahr: 2014
  • Herausgeber: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Sprache: Englisch
28:56 FOSS4G, Open Source Geospatial Foundation (OSGeo) Englisch 2014

Implementing basic GeoCouch support in Couchbase Lite

Couchbase Lite is an Apache-licensed native JSON database for iOS and Android with offline synchronization support.At a hackathon last year it took a couple of hours to add GeoCouch-style bbox queries to Couchbase Lite. I'll walk through the implementation of the geo indexer and how it fits into the Couchbase Lite codebase.Also expect to be wowed by examples of the power of sync + geo.
  • Erscheinungsjahr: 2014
  • Herausgeber: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Sprache: Englisch
29:38 FOSS4G, Open Source Geospatial Foundation (OSGeo) Englisch 2014

Mending Spatial Data with PostGIS

This presentation demonstrates common techniques to clean-up spatial data from a real-world data source.I will start with raw OSM data.Topics I'll cover:1) Getting OSM data2) How to merge multilinestrings into single linestrings.3) Fill in gaps, snapping, reducing resolution4) Consolidating geometries with aggregate functions ST Union, ST MakeLine, ST Collect based on both spatial and non-spatial attributes
  • Erscheinungsjahr: 2014
  • Herausgeber: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Sprache: Englisch
39:49 FOSS4G, Open Source Geospatial Foundation (OSGeo) Englisch 2014

UrbanFootprint: Next-Gen Scenario Planning Tool

UrbanFootprint is a new open source scenario planning tool that seeks to revolutionize the practice of planning, with the potential to allow for a closer integration with research, public involvement, and education. Within version 1.1 alpha now complete and the next version currently under development, UrbanFootprint is a new state-of-the-art model that uses open source geographic information system (GIS) technology to create and evaluate physical land use/transportation investment scenarios. It is designed to be deployed by government agencies, private entities and NGOs. The model translates disparate data describing the existing environment and future urban development plans into a common data language, and defines future scenarios through the application of a new common set of ÔPlace Types'. The model's suite of Place Types represents a complete range of development types and patterns, from higher density mixed-use centers, to separated-use residential and commercial areas, to institutional and industrial areas. The physical and demographic characteristics associated with the Place Types are used to calculate the impacts of each scenario. UrbanFootprint represents the new standard for scenario modeling tools intended for use by urban and regional planners at the local, county, regional, state or national level. Running on a backbone of PostGIS, PostgreSQL and Ubuntu Linux 64-bit, it takes full advantage of today's hardware processing capabilities to model the impacts of future urban growth scenarios on the base (existing) environment in future years to generate outcomes for a full list of metrics, including: Travel behavior (vehicle miles traveled, transit trips, walking trips, fuel consumed, fuel cost, criteria pollutant emissions, transportation electricity consumed and impacts); Energy & Water consumption (for transportation & buildings); Land Consumption by type; Infrastructure Cost (capital and operations & maintenance); City revenue from residential development; Public Health Impacts (Obesity, Asthma, Rhinitis, Pedestrian-Vehicle Collisions, Respiratory & Cardiovascular Health Incidences); and Greenhouse Gas (GHG) Emissions.
  • Erscheinungsjahr: 2014
  • Herausgeber: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Sprache: Englisch
24:28 FOSS4G, Open Source Geospatial Foundation (OSGeo) Englisch 2014

3D slippy map with three.js

We will demonstrate the use of WMS and WCS as input to three.js for rendering an interactive 3D-model in the browser, based on actual data. Our extension of three.js, (WxS.threejs) takes several inputs, the boundingbox being the simplest. WMS-service, WCS-service, LAYERS and many, many other variables can be set either via the URL or predefined in a quick and easy setup. Further, we wish to introduce the idea of using cached WMS as an input. We've prepared a framework that is ready for consuming WMTS, rendering tiled 3D-models that are stitched together. The goal is to implement a slippy map in 3D. This is an open invitation to all hungry hackers who wish to join us in tapping the potential.Original article:http://labs.kartverket.no/wcs-i-threejs/Example:http://labs.kartverket.no/threejs/wxs.three.htmlGithub:https://github.com/jarped/wxs.threejs
  • Erscheinungsjahr: 2014
  • Herausgeber: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Sprache: Englisch
54:53 FOSS4G, Open Source Geospatial Foundation (OSGeo) Englisch 2014

State of GeoServer and GeoTools 2014

GeoServer and the Java toolkit GeoTools comprise one of OSGeo's fastest moving mapping ecosystems. In addition to this core we will cover java-stack developments in JTS, GeoWebCache and ImageIO-Ext.First up is "State of GeoServer" reviewing the new and noteworthy features introduced in the past year. Our six month release cycle sees GeoServer 2.5 and 2.6 being released this year. These releases bring together exciting new features: WCS 2.0 and WCS 2.0 Earth Observation profile, batch importer, and a fresh implementation of GetFeatureInfo.Switching to technical for a GeoTools update. A passion for performance sees improvements in PNG and JPEG encoding, rendering from PostGIS and experimental JDK work. This presentation provides a review of new features, api changes and community modules. We have simplified the core FeatureCollection interface, introduced partial 3D support, structured grid coverages, multiple grid coverages and extended JTS Geometry with Curves.Data formats support continues to grow with the latest GeoPackage, native NetCDF support and a new shapefile and wfs client implementation. Database users have table and index management methods to look forward to. Extensions have seen a lot of activity with WMS client improvements, vector grids, and a transform extension for dynamic feature collection processing.Attend this talk for a cheerful update on what is happening with these great OSGeo projects! Whether you are an expert user, a developer, or simply curious what these projects can do for you, this talk is for you.
  • Erscheinungsjahr: 2014
  • Herausgeber: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Sprache: Englisch
19:20 FOSS4G, Open Source Geospatial Foundation (OSGeo) Englisch 2014

GeoTools, GeoServer, GeoGit: A Case Study of Use in Utility Field Work

After creating a custom application featuring ArcSDE and the ESRI Mobile SDK for use by the field crew from a local Mosquito and Vector Abatement District, we sought an alternative to the high overhead from the proprietary software. By utilizing GeoTools, GeoServer, and GeoGit, we were able to develop a full-fledged application maintaining the same functionality and usability of the original application, without the high cost of entry.The GeoTools application, "Mosquito," and GeoServer, were placed on each of the field laptops of the twenty-member crew, serving both the application and cached base layers to allow for offline data connection. A USB Bluetooth GPS dongle was used to allow workers to locate themselves within the application. GeoGit was utilized to allow the disparate field workers to merge and synchronize data to the master database at the end of their shift.
  • Erscheinungsjahr: 2014
  • Herausgeber: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Sprache: Englisch
27:27 FOSS4G, Open Source Geospatial Foundation (OSGeo) Englisch 2014

Open Web Mapping: An educational resource for creating online maps using free and open source software

Free and open source software (FOSS) for GIS continues to increase in functionality and usability, and offers a flexible and economic option for organization that want to create online maps; however, beginners face a broad array of software choices and may not know which FOSS products and packages to deploy in each tier of the web map architecture. Compounding the problem is the fact that much documentation for FOSS GIS is fragmented among these tier-specific products and does not provide end-to-end workflows for designing and publishing cartographic web services and assembling them into an online map product. In response to these needs, The Pennsylvania State University has introduced an open online course entitled Open Web Mapping. The course lessons explain the theory and architecture of web mapping, while walking beginners through the process of deploying online maps with FOSS. Software such as QGIS, GDAL, GeoServer, TileMill, and OpenLayers is introduced as students start from the data processing stage and work their way to the final display of interactive web service layers in a browser-based map. The course is intended as an open resource for the entire FOSS community; therefore, the lesson materials are freely accessible through a Creative Commons license.
  • Erscheinungsjahr: 2014
  • Herausgeber: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Sprache: Englisch
29:54 FOSS4G, Open Source Geospatial Foundation (OSGeo) Englisch 2014

MapServer #ProTips

MapServer is a fast, flexible and extremely powerful tool for creating dynamic maps for the Web. Underneath the hood, MapServer offers many powerful and advanced features that many users never dig into, and new features are being added constantly. Come learn about some of the more advanced features of MapServer, from heat maps to 3D WFS services to exporting data to GDAL file formats to very complex symbology and labeling. Learn simple and advanced use cases and debugging techniques for some of these advanced features from two presenters with over 20 years combined experience of using MapServer. A live MapServer instance will be used during this presentation (yes we are crazy!).
  • Erscheinungsjahr: 2014
  • Herausgeber: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Sprache: Englisch
von 16 Seiten
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