💧🌏 Greg Cocks
As A USGS Employee Working In Spatial Data: hehehehehehehehe
--
https://xkcd.com/2920/ <-- link to XKCD cartoon
--
"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
Survey Marker

xkcd
Apr 17, 2024 at 8:06pmWeb
Show thread💧🌏 Greg CocksApr 17, 2024
A recent post with some more tech details:
https://techhub.social/@GregCocks/112244097936932307
GregCocks (@[email protected])

Attached: 4 images The NSRS Horizontal Datums Will Be Tectonic Plate Based! | Changes To The Vertical Datums -- https://geodesy.noaa.gov/datums/newdatums/index.shtml <-- details of the new NSRS datums, etc at the National Geodetic Survey (NGS) website -- #GIS #spatial #mapping #coordinates #coordinatesystems #NationalGeodeticSurvey #NGS #datums #verticaldatum #NorthAmerica #horizontaldatum #NSRS #geology #NorthAmericanPlate #CaribbeanPlate #tectonics #platetectonics #movement #GPS #GNSS #geomorphometry #NAVD88 #NAD83 #accuracy #precision

TechHub
Show threadKevin LeecasterApr 17, 2024
@GregCocks
Do you recall what the old geospatial software that was used by USDA and I assume USGS, was it GLASS or something like that?
Show threadtchaddadApr 18, 2024
@GreenFire @GregCocks you might be thinking of GRASS? https://grass.osgeo.org/
GRASS - Bringing advanced geospatial technologies to the world

GRASS is a powerful open-source geospatial processing engine that supports advanced modeling, time series analysis, and spatial data management.

GRASS
Show threadKevin LeecasterApr 18, 2024
@tchaddad @GregCocks
Yes, of course. It's been since the early nineties and hadn't thought about it in a long time. Thanks.
Show threadtchaddadApr 18, 2024
@GreenFire @GregCocks it goes back to the 80’s at least! (obligatory link to the 1987 GRASS video narrated by William Shatner): https://m.youtube.com/watch?v=U3Hf0qI4JLc
GRASS GIS MOVIE CERL 1987

YouTube
Show threadKevin LeecasterApr 18, 2024
@tchaddad @GregCocks
Are they still using it though?
Show threadtchaddadApr 18, 2024
@GreenFire @GregCocks no idea about agencies, but people definitely still use it both as a standalone spatial analysis tool, and it is also integrated in QGIS, so fairly accessible from a GUI as well
Show thread💧🌏 Greg CocksApr 18, 2024

@GreenFire @tchaddad

@grassgis is a very active project / software and almost constantly being improved, with tools that other spatial software can't do ½ as well, if at all...
It is under the auspices of the Opensource Geospatial Foundation, and has a strong & active community of users
It also just received 1½ million dollars of (further) development funding from the National Science Funding, so it has some chops!
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2303651
More details here: grass.osgeo.org
#GIS #spatial #mapping #gischat #GRASSGIS #OSGeo #opensource

NSF Award Search: Award # 2303651 - POSE: Phase II: Growing GRASS OSE for Worldwide Access to Multidisciplinary Geospatial Analytics

Show threadShawn CarterApr 19, 2024
@GreenFire @tchaddad @GregCocks I use GRASS daily for operational remote sensing tasks like river ice monitoring and flood inundation mapping. It's definitely not the easiest to grok out of the box, but it is solid. Scripting for it is also insanely simple, flexible, and legible.