Category: Uncategorized

If you ever wanted to polygonize something like a street network with shapely, you may have noticed missing geometries in the result, like in the case of Vienna below. I had the same issue, and this is a note to myself… Continue reading Fixing missing geometries in a polygonized network

Paul Ramsey saw a spatial join done using a GPU and tried to do the same with PostGIS, checking how fast that is compared to the GPU-based RAPIDS.AI solution. Since Paul used parallelisation in PostGIS, I got curious how fast Dask-GeoPandas is on the same task. So, I gave it a go. Let’s download the… Continue reading Dask-GeoPandas vs PostGIS vs GPU: Performance and Spatial Joins

The final paper based on my PhD thesis is (finally!) out in the Environment and Planning B: Urban Analytics and City Science. We looked into ways of identifying patterns of urban form and came up with the Methodological foundation of a numerical taxonomy of urban form. You can read it on the journal website (open… Continue reading Methodological Foundation of a Numerical Taxonomy of Urban Form