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Bert Temme

@berttemme.bsky.social
119 followers 76 following 33 posts
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Reposted by Bert Temme
Lat × Long @latlong.blog · 07/09/2026
Bert Temme took the new Portolan CLI for a spin, turning an ArcGIS dataset into a published data catalogue with PMTiles in just eleven commands. bertt.wordpress.com/2026/09/03/from…
bertt.wordpress.com
From ArcGIS Online to Blob Storage: A Portolan v0.8.0 Walkthrough
IntroductionSetting up a Spatial Data Infrastructure (SDI) as a data publisher has traditionally meant significant work and cost: • Loading data into spatial databases (SQL Server, Oracle, PostGIS)…
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Bert Temme @berttemme.bsky.social · 07/08/2026
Traileasy: Planning hikes made easy www.traileasy.com
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Reposted by Bert Temme
Postholer - Hiking & GIS @postholer.com · 16/07/2026
Create a median composite raster from Sentinel-2 using only #GDAL This tutorial achieves the same result as #spatialthoughts Python tutorial: courses.spatialthoughts.com/python-remot... ...using only GDAL and Bash, without Python and it's dependencies. www.postholer.com/portfolio/no...
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Bert Temme @berttemme.bsky.social · 13/05/2026
Animated all public transit movements in Utrecht for today on a MapLibre map — powered by the OVapi GTFS feed Demo : bertt.github.io/utrechtriders #GTFS #OpenData #MapLibre #PublicTransit #Utrecht
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Bert Temme @berttemme.bsky.social · 03/05/2026
Built a static transit app based on GTFS feed for the Netherlands — 52,000+ stops, all operators, no backend. Because all other planners are pure shit 💩 bertt.github.io/OVNu
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Bert Temme @berttemme.bsky.social · 04/03/2026
in the SDE days it was hacking blindly in the SDE.LOCKS table and hope for the best :-)
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Bert Temme @berttemme.bsky.social · 04/03/2026
You only need enterprise advanced pro license for that
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Bert Temme @berttemme.bsky.social · 15/02/2026
16 million cyclists measured at Utrecht's busiest point Vredenburg in 9 months, max 80K in a day in may. bertt.github.io/utrecht_mobi...
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Bert Temme @berttemme.bsky.social · 09/02/2026
New blog: GDAL Powered AI Agents bertt.wordpress.com/2026/02/09/g...
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Bert Temme @berttemme.bsky.social · 26/05/2025
Dutch map www.visplanner.nl/tabs/map
visplanner.nl
VISplanner
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Bert Temme @berttemme.bsky.social · 26/05/2025
Dutch map www.visplanner.nl/tabs/map
visplanner.nl
VISplanner
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Reposted by Bert Temme
Postholer - Hiking & GIS @postholer.com · 08/04/2025
Cloud Native Data formats. A quick cheat-sheet in case you weren't sure... #gischat
A summary of what defines Cloud Native Data, in context of spatial data. It's become a marketing term and not the definition it was intended to be.
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Reposted by Bert Temme
Mapsui @mapsui.bsky.social · 17/02/2025
Mapsui 5.0.0-beta.8 has a ruler widget to measure distance. The source is relatively simple. It is easy to make your own variant github.com/Mapsui/Mapsu...
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Bert Temme @berttemme.bsky.social · 14/02/2025
Exploring Boost.Geometry: A Library Based on Concepts, Traits and Tag Dispatching www.youtube.com/watch?v=UcxD...
youtube.com
BAREND GEHRELS - Exploring Boost.Geometry: A Library Based on Concepts, Traits and Tag Dispatching
YouTube video by cppunderthesea
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Bert Temme @berttemme.bsky.social · 03/02/2025
Geocomputation with Python: a (open source) book on reproducible geographic data analysis with open source software. py.geocompx.org
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Reposted by Bert Temme
Chris Holmes @opencholmes.bsky.social · 03/02/2025
I finally found the time to write up my experience using AI-coding tools to create the QGIS plugin I made a couple months ago to make it easy to download Overture Maps Foundation, Source Cooperative and other GeoParquet data. Read it at: cholmes.medium.com/coding-qgis-...
cholmes.medium.com
Coding QGIS Plug-ins with AI coding tools
Following up on my last post, I wanted to share some more details about the experience of using AI tools to code a plugin for QGIS, one…
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Bert Temme @berttemme.bsky.social · 22/01/2025
New blog: Speeding up large PostGIS tables in QGIS - using 'estimated table metadata' bertt.wordpress.com/2025/01/22/s...
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Reposted by Bert Temme
Paul Ramsey @pwramsey.bsky.social · 16/01/2025
Have you met Mr. DEM? 56GB of Canadian elevation data in a single COG. open.canada.ca/data/en/data...
open.canada.ca
Medium Resolution Digital Elevation Model (MRDEM) - CanElevation Series - Open Government Portal
ATTENTION! The files in this dataset are designed for streaming, not downloading. For the best experience, please follow the instructions available in the resources. In replacement of the former...
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Reposted by Bert Temme
James Milner @jameslmilner.com · 13/01/2025
After 2.5+ years, Terra Draw v1 is finally released 😌 ✏️ Draw on web maps with the 10 built in modes (Point, Line, Polygon, Rectangle etc!) 🗺️ Supports Leaflet, @maplibre.org, @openlayers.org, Google Maps, Mapbox Check it out: github.com/JamesLMilner... #geojson #maplibre #leafletjs #openlayers
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Bert Temme @berttemme.bsky.social · 12/01/2025
nice spatial query, select buildings in danger based on wind direction (or some fancy fire model)
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Bert Temme @berttemme.bsky.social · 12/01/2025
no wind direction available?
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Bert Temme @berttemme.bsky.social · 10/01/2025
Demo is at bertt.github.io/ordesa_gr11/
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Bert Temme @berttemme.bsky.social · 10/01/2025
New blog: Creating interactive 3D hiking map bertt.wordpress.com/2025/01/10/c... Live demo: github.com/bertt/ordesa...
bertt.wordpress.com
Creating interactive 3D hiking map
In this blog we’re going to create an interactive 3D Hiking map of the impressive Ordesa canyon in Spain. GoalsGoals of the map are:- Create 3D map with detailed terrain from Spanish IGN;- Plotting…
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Bert Temme @berttemme.bsky.social · 24/12/2024
Polygonize in JTS TestBuilder www.eclipse.org/community/ec...
eclipse.org
The JTS TestBuilder - a Multitool for Geometry | The Eclipse Foundation
TestBuilder: a full-featured multitool for working with geometry.
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Bert Temme @berttemme.bsky.social · 16/12/2024
jump in the hot pools epiciceland.net/all-hot-spri...
epiciceland.net
List of all Hot Springs - Epic Iceland 2024
50+ hot springs. Guide to every single hot spring in Iceland. How to get to the hot spring? What type of hot spring is it? Tips, videos, maps.
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Reposted by Bert Temme
Pacific Crest Trail @pacificcresttrail.bsky.social · 13/12/2024
Here's an animated 'viewshed' of the #PacificCrestTrail. This shows all visible/invisible terrain along the entire trail. You'll find one for the #JohnMuirTrail as well. www.youtube.com/watch?v=tmY2...
youtube.com
Pacific Crest Trail Viewshed
YouTube video by Postholer
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Bert Temme @berttemme.bsky.social · 13/12/2024
Barcelonnette buildings generated from massive airborne laser altimetry point clouds bertt.github.io/roofer_demo/...
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Bert Temme @berttemme.bsky.social · 10/12/2024
well it worked right now! weird, maybe did something wrong.
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Bert Temme @berttemme.bsky.social · 10/12/2024
same error ai! Part of stacktrace: gis_plugin_gpq_downloader\__init__.py", line 78, in classFactory from .qgis_plugin_gpq_downloader import QgisPluginGeoParquet python/plugins\qgis_plugin_gpq_downloader\qgis_plugin_gpq_downloader.py", line 15, in
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Bert Temme @berttemme.bsky.social · 09/12/2024
With QDuckDb installed no error
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Bert Temme @berttemme.bsky.social · 09/12/2024
On Windows (without qduckdb/duckdb): "Couldn't load plugin 'qgis_plugin_gpq_downloader' due to an error when calling its classFactory() method ModuleNotFoundError: No module named 'duckdb'"
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Reposted by Bert Temme
Nicolas Lambert @neocarto.bsky.social · 05/12/2024
How to deal with map projections in the geoviz JavaScript library observablehq.com/@neocartocnr...
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Bert Temme @berttemme.bsky.social · 04/12/2024
yeah it's mine. Well the lights are part of the glTF's
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Bert Temme @berttemme.bsky.social · 04/12/2024
These are glTF 2.0 models
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Bert Temme @berttemme.bsky.social · 04/12/2024
3D models you mean?
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Bert Temme @berttemme.bsky.social · 02/12/2024
or make it optional, I think DuckDB uses ':memory:' value as output db for this
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Bert Temme @berttemme.bsky.social · 02/12/2024
well it saves a click :-)
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Bert Temme @berttemme.bsky.social · 02/12/2024
First test: works! Maybe can create in memory layer instead of saving to file?
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Reposted by Bert Temme
Nicolas Lambert @neocarto.bsky.social · 27/11/2024
Proud to see my work exhibited at the Musée de l'Homme in Paris. www.museedelhomme.fr/fr/expositio...
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Bert Temme @berttemme.bsky.social · 23/11/2023
always stupid cors things :-( think it should work right away with the tif on github pages (if it's not too big to put it there)
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Bert Temme @berttemme.bsky.social · 23/11/2023
ah ok, it works indeed in Firefox, not in chrome/safari somehow
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Bert Temme @berttemme.bsky.social · 23/11/2023
something wrong with public-webmapping-experimental.s3.amazonaws.com/NYC_2017_LiD... ?
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Reposted by Bert Temme
Mike Treglia @miketreglia.bsky.social · 21/11/2023
#gischat Been wanting to try a serverless webmap of w/ NYC land cover data (6" res data!) as a COG. Finally put the pieces together! tnc-ny-science.github.io/nys_cities_s... Couldn't quite make it work til I tried adapting @berttemme.bsky.social's example here github.com/bertt/cog/tr... (thanks!)
Screenshot of web map of NYC land cover data
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Bert Temme @berttemme.bsky.social · 22/09/2023
yo
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