postgis

Sun, 2016-02-07 11:39

Precision Agriculture and Open Spatial Technologies

Autonomous Vehicles, Drones and Data Driven decisions happening on a sub inch level. A city of the future? No, a farm today. Come find out the current Precision Agricultural techniques for data collection, analysis and dissimulation and where FOSS4G tech plays a key role. From harvesting millions of data points generated from every vehicle on the farm, to the corporate dashboard and reports, FOSS4G plays a role.

Precision Agriculture, drones are just the tip of the iceberg.

Thu, 2016-02-04 06:11

Postgis “esri union” on a “unlimited” sized data set.

“Esri union” is a function that is often used by Arcgis users and in many cases an important reason why people still need Arcgis software, even when the data area available in Postgis. For NIBIO the Arcgis software was working ok with smaller datasets, but not bigger datasets.  So we asked the users why not run this is in Postgis ? The answer was “The function is not available in Postgis, can you make one that works ?”

 

In this presentation we will go into how to manage

Wed, 2016-02-03 15:25

Using Open Source to support Transportation Research: Nonmotorized Travel Analysis Toolkit (NMTK)

A common challenge with niche research, notably in the realm of bicycle and pedestrian travel, is that research results can be very difficult to evaluate and reproduce outside of the context in which the research was originally conducted. In addition, academic research always favors “novel” and “unique” approaches, rather than carefully testing out work in new contexts and incrementally building toward a complete well-developed analytic solution.

Fri, 2016-01-22 10:11

Marine Protected Area Mapping - Promoting Awareness, Compliance, and Enforcement via Open Data and Tools

Marine Protected and Managed Areas (MPAs) are a cornerstone of coastal and ocean conservation efforts and reflect years of dedicated effort to protect species and habitats through science-based regulation. The Anthropocene Institute, in partnership with the NOAA Marine Protected Area Center, is creating an actively managed, free and open, worldwide database of MPAs, including normalized metadata and regulation summaries, full GIS boundaries, revision history, and public facing interactive web maps. This presentation will describe the technology stack (custom PostGIS database application and interactive web map leveraging Leaflet, Mapbox vector tiles and styles, jQuery, and Semantic-UI), and also the underlying interdisciplinary effort to populate and manage relevant data accurately.

Thu, 2016-01-21 11:25

Terra Populus: Free Human-Environment Spatial Data

Terra Populus is a National Science Foundation project that provides free population-environment data for the globe. Terra Populus is a next generation spatial database repository, built entirely on FOSS stack. The project focuses on the integration of heterogeneous big spatial data. When accessing Terra Populus through the web interface (data.terrapop.org) users are able to access microdata, vector, and raster datasets and transform them into the data format necessary for their work. This allows users to focus their time on analytics instead of spending time collecting datasets.

Wed, 2016-01-20 19:28

pgRouting: A Crash Course

pgRouting is an extension that builds on PostGIS for performing network routing such as road navigation, hiking, and other things.

In this talk we'll give a crash course of what you can do with pgRouting with a special focus on pgRouting 2.1, and time permitting, highlights of upcoming pgRouting 2.2.

Coverage will detail:

1) Making general data routable and applying costs to data
2) Using dijkstra to determine optimal paths from one start location to one destination
or for choice travel options - one source to many destinations

Wed, 2016-01-20 04:41

Basing LiDAR surveys on (PostgreSQL) geospatial databases: is it possible?

LiDAR surveys represent one of the largest datasets involved in GIS, corresponding to "point clouds" containing up to several billions of points including more information than simple geospatial coordinates (flight direction, number of returns, color, etc.). The choice of the technology for the management of these data is therefore crucial.

Tue, 2016-01-19 13:44

Wrapping up Python into a Cloud-based PostgreSQL

Through PostgreSQL’s support for user-defined procedural language functions, the possibilities for data analysis within a database is greatly expanded. Specifically, using PL/Python, one can bring in countless Python libraries to process data close to the database. Here I will talk about my efforts to bring in the functionality of PySAL, a spatial analytics library written in Python and developed largely by Serge Rey, et al. at Arizona State University.

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