New blog post: Accessing Planetary Computer STAC files in DuckDB - see https://blog.rtwilson.com/accessing-planetary-computer-stac-files-in-duckdb/

This is a report of my experimentation on how to access STAC GeoParquet files provided by Planetary Computer in DuckDB - I struggle a bit with authentication and libraries, but get it working after a while.

#geospatial #python #duckdb #PlanetaryComputer

Have you wanted to use segment-geospatial (https://samgeo.gishub.org/) on Microsoft Planetary Computer and struggled? My blog post shows the simple solution: https://blog.rtwilson.com/how-to-get-segment-geospatial-working-on-microsoft-planetary-computer/

#python #ml #segmentation #PlanetaryComputer #geospatial #gis

day 23: 3d
with bonus animation.

same corner of Sussex used on the Day 17. Elevation data from Copernicus Gloabl DEM (ESA) via #PlanetaryComputer.

DEM --> TIN accomplished with by randomly sampling the DEM, and using `matplotlib.tri.Triangulation`

first time mucking about with a TIN. ditto animation. and #matplotlib can do them both.

code: https://github.com/tlohde/30DMC/tree/main/2023

#30DayMapChallenge

day 20: outdoors
summit views

aggregating viewsheds for all peaks within the cairngorms national park. brighter areas can be seen from more hill tops.

Cac Càrn Beag (1156 m) in the south east of the park wins the most visible prize: (can be seen from 289 other summits)

peaks and cairngorms boundary from #OpenStreetMap. DEM from Copernicus Global 30 m DEM via #PlanetaryComputer. viewshed analysis run with #gdal.

code: https://github.com/tlohde/30DMC/tree/main/2023

#30DayMapChallenge

day 18: atmosphere
wanted to do something with weather balloons....couldn't readily find the sort of data i was after.

INSTEAD: the utility of #sar. a pair of acquisitions from Sentinel-2 (cloudy) and Sentinel-1 (cloud-free) over Panama.

Contains Copernicus Sentinel Data (ESA) accessed via #PlanetaryComputer using #pystac and #stackstac

code: https://github.com/tlohde/30DMC/tree/main/2023

#30DayMapChallenge