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Updated QOD September 2021 (markdown)

Tim Sutton 2021-09-21 17:25:57 +01:00
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QOD-September-2021.md

@ -18,7 +18,8 @@ No | Name | Time | Speaker | Country | Language
---|------|------|-------------|---------|--------- ---|------|------|-------------|---------|---------
1 | Implementation of web-based groundwater information mapping projects with QGIS and Lizmap | [08h00 UTC](https://www.timeanddate.com/worldclock/fixedtime.html?year=2021&month=9&day=24&hour=08&min=00&sec=0&msg=QGISOpenDay-IMMO "click this link to find out the time in your local time zone") | Immo Blecher | South Africa | English 1 | Implementation of web-based groundwater information mapping projects with QGIS and Lizmap | [08h00 UTC](https://www.timeanddate.com/worldclock/fixedtime.html?year=2021&month=9&day=24&hour=08&min=00&sec=0&msg=QGISOpenDay-IMMO "click this link to find out the time in your local time zone") | Immo Blecher | South Africa | English
2 | Automatic identification of ditches and streams in elevation data using raster algorithms | [13h00 UTC](https://www.timeanddate.com/worldclock/fixedtime.html?year=2021&month=9&day=24&hour=13&min=00&sec=0&msg=QGISOpenDay-Jacob "click this link to find out the time in your local time zone") | Jacob Levallius | Sweden | English 2 | Automatic identification of ditches and streams in elevation data using raster algorithms | [13h00 UTC](https://www.timeanddate.com/worldclock/fixedtime.html?year=2021&month=9&day=24&hour=13&min=00&sec=0&msg=QGISOpenDay-Jacob "click this link to find out the time in your local time zone") | Jacob Levallius | Sweden | English
3 | QGIS a vibrant Community| [21h30 UTC](https://www.timeanddate.com/worldclock/fixedtime.html?year=2021&month=8&day=27&hour=21&min=30&sec=0&msg=QGISOpenDay-Touringmodelbuilder "click this link to find out the time in your local time zone") | Luiz Motta | Brazil | Portuguese 3 | Track yaself! A case study of using OwnTracks, MQTT, Node-Red, PostGIS and QGIS to build your own personal tracking platform. | [15h00 UTC](https://www.timeanddate.com/worldclock/fixedtime.html?year=2021&month=9&day=24&hour=15&min=00&sec=0&msg=QGISOpenDay-Tim "click this link to find out the time in your local time zone") | Tim Sutton | Portugal | English
4 | QGIS a vibrant Community| [21h30 UTC](https://www.timeanddate.com/worldclock/fixedtime.html?year=2021&month=8&day=27&hour=21&min=30&sec=0&msg=QGISOpenDay-Touringmodelbuilder "click this link to find out the time in your local time zone") | Luiz Motta | Brazil | Portuguese
**QGISOpenDay 25 September 2021** **QGISOpenDay 25 September 2021**
@ -67,6 +68,21 @@ No | Name | Role | Contact
**Description:** Hydrological flow models are today commonly made using surface elevation sourced from LIDAR data. One big problem with this elevation data when calculating water flow is that culverts aren't represented and therefore the elevation data needs to be modified. Culverts have to be identified, digitised and "burned" into the elevation raster. Culverts are usually found along ditches and streams and these can to some degree be identified visually in the elevation raster using hillside symbology. However, if ditches and streams could be automatically identified the process of finding culverts would be easier. This presentation shows how to automatically identify ditches and streams of certain sizes and shapes using raster calculations with slope, aspect and neighbourhood analysis. The resulting raster features are then converted to polylines for further workflows to find and digitise culverts. **Description:** Hydrological flow models are today commonly made using surface elevation sourced from LIDAR data. One big problem with this elevation data when calculating water flow is that culverts aren't represented and therefore the elevation data needs to be modified. Culverts have to be identified, digitised and "burned" into the elevation raster. Culverts are usually found along ditches and streams and these can to some degree be identified visually in the elevation raster using hillside symbology. However, if ditches and streams could be automatically identified the process of finding culverts would be easier. This presentation shows how to automatically identify ditches and streams of certain sizes and shapes using raster calculations with slope, aspect and neighbourhood analysis. The resulting raster features are then converted to polylines for further workflows to find and digitise culverts.
## Track yaself! A case study of using OwnTracks, MQTT, Node-Red, PostGIS and QGIS to build your own personal tracking platform.
**Time:** 24 September 2021 [15h00 UTC](https://www.timeanddate.com/worldclock/fixedtime.html?year=2021&month=9&day=24&hour=15&min=00&sec=0&msg=QGISOpenDay-IMMO "click this link to find out the time in your local time zone").
**Duration:** ~60 min
**Venue:** [Youtube Live Stream Link]() - Amy to Add
**Presenter:** Tim Sutton
**Description:** Did you ever wonder if you can build a personal tracking platform similar to how Google tracks you but without Google tracking you? Come and join me for an informal session where I will show you how easy it is to build a platform like this using FOSS GIS. Note the presentation will use QGIS but also focus a lot on other related tools needed in the workflow.
## QGIS a vibrant Community ## QGIS a vibrant Community
**Time:** 24 September 2021 [21h30 UTC](https://www.timeanddate.com/worldclock/fixedtime.html?year=2021&month=8&day=27&hour=21&min=30&sec=0&msg=QGISOpenDay-Touringmodelbuilder "click this link to find out the time in your local time zone"). **Time:** 24 September 2021 [21h30 UTC](https://www.timeanddate.com/worldclock/fixedtime.html?year=2021&month=8&day=27&hour=21&min=30&sec=0&msg=QGISOpenDay-Touringmodelbuilder "click this link to find out the time in your local time zone").