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Spatial Indexes and Bad Queries
So, this happened: Basically a GeoDjango user posted some workarounds to some poor performance in spatial queries, and the original query was truly awful and the workaround not a lot better, so I s…
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Fixing Invalid Geometry with JTS
TLDR: JTS can now fix invalid geometry!The JTS Topology Suite implements the Geometry model defined in the OGC Simple Features specification. An important part of the specification is the definition …
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Fixing Invalid Geometry with JTS
TLDR: JTS can now fix invalid geometry!The JTS Topology Suite implements the Geometry model defined in the OGC Simple Features specification. An important part of the specification is the definition …
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Static Vector Tiles II: Openlayers with Custom Projection
Building off the work from my previous post on vector tiles, I wanted to develop a second process for use in Openlayers. There are many tutorials out there demonstrating the use of vector tiles with p…
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QGIS – Cálculo de área tridimensional com o r.surf.area
Nesse vídeo iremos aprender como usar a função r.surf.area para realizar o cálculo de área de uma superfície tridimensional. Ou seja calcularemos a área de uma região levando em consideração a sua top…
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Sol Katz Award for Geospatial Free and Open Source Software - Call for Nominations 2021
2021-04-26 Sol Katz was an early pioneer of FOSS4G and left behind a large body of work in the form of applications, format specifications, and utilities while at the U.S. Bureau of Land Management…
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GeoTools 24.3 released
The GeoTools team is pleased to share the availability of GeoTools 24.3 :geotools-24.3-bin.zip geotools-24.3-doc.zipgeotools-24.3-userguide.zipgeotools-24.3-project.zipThis release is published to …
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Why are my survey points shifted?
It happens that when you collect data and then checking it in the office on your desktop using QGIS, the points are misplaced and shifted. This blog post explains the possible root cause of this issue…
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Why are my survey points shifted?
It happens that when you collect data and then checking it in the office on your desktop using QGIS, the points are misplaced and shifted. This blog post explains the possible root cause of this issue…
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Collaboration with Group on Earth Observations (GEO)
2021-04-21 As such, GEO is pleased to be a key supporter of the largest community gathering of the open source geospatial community, which will take place online as part of FOSS4G 2021 from 27 Se…
