Mastodawn

"It is easy to take GIS tools for granted because they feel fast and intuitive. Yet every click depends on contributions from many fields. Surveyors measured land boundaries by hand. Mathematicians built the formulas for projections. Geodesists defined the reference frames. Engineers designed satellites and receivers. Programmers wrote the tools that display and analyze the data." #gisDay thoughts by Benedicta Boasiako https://gogeomatics.ca/the-story-beneath-the-map/

Konstantin Nov 20

Am #GISDay ehren wir Dr. Gladys West, die geniale Mathematikerin, deren geodätische Erdmodellierung in den 1970er-80ern die GPS-Grundlage schuf. Ihre SEASAT- & GEOSAT-Arbeit lieferte präzise Geoid-Modelle für heutige #geospatial-Apps. #wow 😮 #WomenInSTEM

RE: https://bsky.app/profile/did:plc:2xisupj43xdq7uvffzigis5p/post/3m5zli6p4622w

Eugene Alvin Villar 🇵🇭Nov 20

In 2021 I gave a talk about “openness” briefly tracing the history from the Free Software movement, #GNU, and OSS, to open formats like XML and ODF, then to the #FreeCulture and #OpenData movement like #CreativeCommons, #Wikipedia, and #Wikidata.

I then pivoted to the parallel developments in the geospatial industry leading to the creation of what I call the open geospatial tripod: Open Geospatial Consortium, Open Source Geospatial Foundation, and OpenStreetMap.

#Mapstodon #gischat #GISDay

Geomob Nov 20

We celebrated #GISDay with not one, but two Geomob events. A #geomobBER, but also a #geomobLX in the heart of the Portuguese capital.

Thanks as always to Startup Lisboa for opening your doors late to the community, and to our organisers @doublebyte and Miguel Marques for hosting such a wonderful evening.

crowdotblack Nov 19

For #GISDay, I re-digitized a whole city block of impervious polygons (with #topology) because the last person did such a bad job. No one will ever care or know. It took about 3 hours and yes all curves are curves, they are tangent, or fillets and sidewalks are all measured widths, the rest has to be from imagery

This is basically my job, to quietly fix things without thanks. I'm ok with that

#gischat #gis #mapstodon

SEAS Guyane Nov 19

En cette journée internationale du système d'information géographique,
voici un extrait de la dernière image SEAS Guyane du bourg de Mana, prise samedi dernier par le satellite Pléiades (0,5 m de résolution).

https://seasguyane.org

#satellite #Pleiades #Mana #Guyane #télédétection #cartographie #SIG #GISDay #SEASGuyane

Georg Verweyen Nov 19

How does economic complexity correlate with human development?
On today's #gisday I'll share my first attempt at a bivariate chloropleth map.
Admittedly, there's a lot going on and 25 tints can be hard to distinguish, plus I tried to keep it as accessible as possible marrying two accessible color ramps: Mako and Viridis.
#gis #qgis #mapping #CorrectTheMap

Derek Law Nov 19

Happy #GIS Day 2025!! Learn more about the event https://gisday.com/en-us/resources

#GISDay #spatial #business #location #intelligence #geography #GISchat #geospatial @esri @gisday @esrifederalgovt @esrislgov @esritraining @urisa

HD Nov 19

Happy Corporate Shill day to those who celebrate.
#gisday

Josh Nov 19

In celebration of #GISDay 2025 here is the only instance I know where geographic information systems and geodatabases are specifically named and described, to vampires, in a major motion picture.

#GIS #WhatWeDoInTheShadows

https://www.youtube.com/watch?v=sg4YsAjreOA

GIS Definition - What we do in the Shadows

YouTube