26: Happy Birthday PROJ! https://geoobserver.de/2025/03/18/26-happy-birthday-proj/ #proj #gistribe #gischat #fossgis #foss4g #OSGeo #spatial #geospatial #opensource #GDAL #GRASS #MapServer #PostGIS #QGIS #R #FME #ESRI #gis #geo #geoObserver pls RT @mapserving

Troubling coincidence with worrying news, just found @ignfrance use of advanced #PROJ capabilities (deformation model) applied to Mayotte: https://geodesie.ign.fr/contenu/fichiers/documentation/grilles/outremer/defMayotte/

wow, HEALPix projection has just been sitting there available all this time

thanks to #PROJ and #GDAL

https://proj.org/en/9.5/operations/projections/healpix.html

As @hobu recently said in a #GDAL
email (plus some additions)
https://spatialreference.org/ is #1 on
- speed (super fast loading)
- the most the up-to-date (every 3 months, like #PROJ)
- no ads
- no-fuss
- no tracking
- no cookies
- easy-to-consume

spatial reference definitions website in the world :)

It has not only #EPSG systems, but also #ESRI, #IAU 2015, #IGNF, #NKG and #OGC authorities.

As open source, you can even run it in your machine.

Enjoy it!

PROJ 9.5.0 was released today, September 15th
More info on https://proj.org/en/9.5/news.html

https://spatialreference.org/ and https://crs-explorer.proj.org/ are already up to date.

PROJ 9.4.1 was released on June 1st
More info on https://github.com/OSGeo/PROJ/blob/master/NEWS.md

https://spatialreference.org/ and https://crs-explorer.proj.org/ are already up to date.

Question:
Do you know why some projected coordinate reference systems use axis order Northing-Easting?
Is that a historical reason?
(The most common case nowadays is Easting-Northing)

It's even more confusing when Northing uses abbreviation X and Easting uses Y.

Please, replay if you know.

Bonus for westing-southing ;)

1999-2024: Happy Birthday PROJ! https://geoobserver.wordpress.com/2024/03/19/1999-2024-happy-birthday-proj/ #proj #gistribe #gischat #fossgis #foss4g #OSGeo #spatial #geospatial #opensource #GDAL #GRASS #MapServer #PostGIS #QGIS #R #FME #ESRI #gis #geo #geoObserver pls RT via @mapserving

PROJ 9.4.0 was released today!

https://proj.org/en/latest/news.html

Since I use Coordinate Reference Systems on a daily basis I have to search them for different reasons (usually because a customer is using the wrong one). I decided to develop a webpage to search them quickly, and get useful information. A few months later we moved it into the PROJ.org domain.
You have it at https://crs-explorer.proj.org/
Now there is not a single day I do not use it. It was worth it the investment.

It's time for another #PROJ release. 9.3.1 just landed! Release announcement here: https://lists.osgeo.org/pipermail/proj/2023-December/011186.html

Hi GIS fellows,

Is there any way to get the #PROJ version from command-line without printing and parsing the whole help/man page?

Equivalent to `gdal-config --version`? from @gdal
@EvenRouault maybe?

Springer Makes Open Source Chapter Of Upcoming Handbook Of Geographic Information Freely Accessible In April
--
https://link.springer.com/chapter/10.1007/978-3-030-53125-6_30 <-- shared & free journal issue
--
[a good overview of open source GIS software stacks]
“... As a service to the readers, the reference section of this chapter includes scientific video recordings which provide additional content regarding software capabilities, historical notes and background information: #Actinia, #GeoBlackLight, #GeoPaparazzi, #GeoPython, #GeoServer, #GeoTools, #GMT, #GRASSGIS, #gvSIG, #JTS, #Leaflet, #MapServer, #NASAWorldWind, #OSGeoLive. #PostGIS, #PROJ, #QGIS, #rasdaman. In addition, scientific videos about the #OSGeo Foundation and the annual #SolKatzAwards or #GeospatialFreeandOpenSourceSoftware are included…”
#GIS #spatial #mapping #free #opensource #software #FOSS #opensourcesoftware #algorithms #geospatialtechnology #postgresql #postgres #softwarestacks