Talk "Introduction to Vertical Coordinate Systems" from #foss4ge2024 in Tartu

https://www.youtube.com/watch?v=tELPb9G64zU

The slides in PDF are available in the description of the video and in my web page.
#FOSS4GE #FOSS4G #GIS #coordinatesystems

As A USGS Employee Working In Spatial Data: hehehehehehehehe
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https://xkcd.com/2920/ <-- link to XKCD cartoon
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"The standard North American NAD83 coordinate system is misaligned from the actual Earth, off-centre by about 7 feet. Someone knows where I am, and I'm in the wrong place."
#GIS #spatial #mapping #humour #humor #datums #coordinatesystems #NAD83 #NAVD88 #mappymeme #survey #USGS #NGS #benchmark #surveymarker #NorthAmerica #geodetic #geodesy
@XKCD

Talk I gave in FOSS4G 2023: "Introduction to Coordinate Systems" https://www.youtube.com/watch?v=4OOGVIajt9Y
Now with the proper subtitles! (Google was not very good with the autogenerated ones).
The slides in PDF are available in my web page.
#FOSS4G #foss4g2023 #GIS #coordinatesystems