5 Minute Intro to Stetl
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5-minute intro to Stetl an Open Source lightweight framework for handling the conversion and transformation (ETL) of in particular complex/rich GML. Stetl uses and combines existing tools like GDAL/OGR and XSLT. Python is used as glue. Users configure an ETL-process chain through a configuration. More at http://stetl.org
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Smart Emission - Citizens measuring Air Quality - Overview
Slides presented by me on behalf of Geonovum and the project on the Geospatial Sensor Webs conference 2016 organized by 52North in Münster, Germany:
http://52north.org/about/other-activities/geospatial-sensor-webs-conference
The slides give an overview of the Smart Emission project with a focus on the data infrastructure, data management (ETL) and providing access to sensor data via OGC-standards (SOS, WMS, WFS, STA).
Smart Emission - Data - Viewers - Standards
High-level presentation on the Data-infastructure for project-team and participating citizens at Radboud Univeristy Nijmegen, may 26, 2016 for the Smart Emission project: "Het Smart Emission project draait om het in kaart brengen van luchtkwaliteit, geluid, trillingen en meteorologische indicatoren in de stad op een fijnmazig schaalniveau, door inwoners met zogenoemde burger-sensor-netwerken." (Bron: http://smartemission.nl). Project partners: Radboud Universiteit, Gemeente Nijmegen, Rijksinstituut voor Volksgezondheid en Milieu (RIVM), Geonovum, Intemo, CityGIS and offcourse Nijmegen citizens.
NLExtract voor BAG - overview
Presentation given at the OSGeo.nl Day http://osgeo.nl at GeoBuzz Conference on nov 25, 2015. Overview of NLExtract and in particular ETL (conversion) for BAG, the open geo-dataset for Dutch Addresses and Buildings.
3D Breakthrough Meeting - 3D Standards progress
Slides I presented at the Dutch "Doorbraak 3D - Trekkersoverleg" ( 3D Breakthrough Representatives Meetup) at Geonovum, sept 3, 2015. Trying to provide an overview of 3D Open Standards efforts and suggestions for future actions/pilots with some of the CesiumJS-based tiling standards using Dutch public open base registry data ("Basis Registraties").
Wandelen met GPS en De Evolutie van Navigatie
Eng: originally planned as a talk/workshop on hiking with GPS, but evolving into a wider talk about the evolution of navigation and Natural Navigation techniques.
See also the main website: http://gps.justobjects.nl.
Below Dutch:
Plaatsbepaling en navigatie is iets van alle tijden. Zij is mee-geëvolueerd met de mensheid. Vandaag de dag doen we navigatie met GPS via bijv “De TomTom” of steeds vaker via onze Smartphone. We dreigen daarmee echter belangrijke vaardigheden te verliezen zoals kaartlezen en het gebruik van kompas. Maar deze laatste twee middelen waren ook weer een stap in de lange evolutie van Navigatie. Zoals de meesten van jullie weten heb ik veel interesse in de evolutie van de mensheid. In die context heb ik de laatste tijd nagedacht hoe navigatie zich heeft ontwikkeld. Ik zal dit praatje chronologisch opbouwen. Dan komen we vanzelf uit bij "Wandelen met de GPS" waar de nadruk op gaat liggen deze middag.
OSGeo.nl - Year 2014 Highlights
Highlights and achievements in 2014 from the OSGeo.nl, the Dutch-speaking Local Chapter of the Open Source Geospatial Foundation, OSGeo.org. Presented jan 11 2015 by Gert-Jan and Just at the OSGeo.nl/OpenStreetMap NL new years party. See more presentations from that meeting on our website: http://osgeo.nl
Nederland Ontsloten! OSGeo.nl Dag 2014
My talk on the OSGeo.nl Day 2014 on nov 25, 2014, Den Bosch. This event was organized by the OSGeo.nl, the Dutch Language Chapter of OSGeo.org and embedded in the GeoBuzz conference. Main subject is how to transform and visualize (unlock) Dutch Open Geo-datasets using open source tools like NLExtract (http://nlextract.nl), Stetl (http://www.stetl.org). In particular, there is a last minute addition on unlocking 3D data, Top10NL3D, using CesiumJS (http://www.cesiumjs.org) , an Open Source browser/WebGL-based 3D visualization framework ala Google Earth (but open and without plugins). The 3D part of this talk was also given the same day at the "3D Doorbraak" workshop (Jantien Stoter et al).
Big Data - Introduction and Research Topics - for Dutch Kadaster
Presentation (in Dutch) on Big Data (BD) given on Oct 10, 2013 for Dutch Kadaster. To provide an introduction on BD, what could be BD in the geospatial domain, what could be opportunities and research topics for Dutch Kadaster. A personal view, i.e. by no means that this represents opinions or positions of Dutch Kadaster. Just a clarification beyond the buzzword...
SensorWeb SOS Pilot RIVM/Geonovum - Status
Presenting the status of the "SOSPilot". A SensorWeb/IoT project where raw AirQuality data from The Netherlands is transformed (ETL) into Web Services like WMS-Time/WFS and in particular the OGC Sensor Observation Service (SOS). Project at Geonovum with partners, a.o.: RIVM, 52 North, and IRCEL - CELINE (Belgium). Work in progress, striving for EIONET IPR and INSPIRE compliance.
Combined tools like Stetl, PostGIS, HeronViewer, GeoServer, and 52North SWE-line. All FOSS. All promising tools as it all just worked, also thanks to the partners' support, within my 100-hour effort. Find more on http://sensors.geonovum.nl
Original version july 2, 2014. Updated with eionet-reporting and Geonovum weather station on okt 27, 2014.
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5 Minute Intro to Stetl
- 1. Taming Rich GML with Stetl Just van den Broecke 5 minute presentation at OSGeo.nl Stammtisch Wageningen November 7, 2012 www.osgeo.nl www.justobjects.nl
- 4. Rich GML = Complex Mess
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- 15. But... ....FOSS ? ... Stetl...?
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- 17. FOSS ETL - Lower Level But Each Powerful by Itself ogr2ogr
- 18. FOSS ETL - DIY ? (No!)
- 19. FOSS ETL - How to Combine? =+ + ? ogr2ogr
- 20. FOSS ETL - Add Python to Equation =+ + ?( ) ogr2ogr
- 23. Process Chain Input Filter Output gml Filter
- 24. Speed: Streaming Input Filter Output gml
- 25. Speed: Going Native Input Filter Output gml ogr2ogr stETL Native C Libs/Progs Calls
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