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Fractal dimensions or how to generalize geometries in Python and how it affects data

For todays 30dayMapChallenge: Process I was processing a coastline dataset for Norway, trying to find out about the fractal dimension. osmdata.openstreetmap.de has a nice extract of this here:…

Post author By Riccardo

Map Challenge – Day 2 (lines): Straightening the A2

Day 2 of the 30daymapchallenge focused on cleaning and preparing the A2 motorway data before creating a straightened schematic line. Raw geospatial data is rarely perfect, and getting…

Post author By Riccardo

🗺️ Turning a Simple Excel Table into a Map — My #30DayMapChallenge Story

For this year’s #30DayMapChallenge day one points, I wanted to do something lightweight:just take one of those never-ending Excel tables that everyone in GIS seems to have lying…

Post author By Riccardo

Create Pseudo 3D Topographies in QGIS

John Nelson did it again and amazed us by recreating AI topographic images with ArcGIS Pro. He showed the process in his latest youtube video. You may ask…

Post author By Riccardo

Create your own vector basemaps the easy way

Basemaps are a web cartographers best friend, aren’t they. There are plenty of them online, ready to be embedded in your upcoming nice web map application. In this…

Post author By Riccardo

How to use PyQGIS as standalone script on Ubuntu

Today I wanted to hack together a standalone script using PyQGIS, the QGIS Python bindings, to write a small prototype. I hadn’t written such a standalone script yet,…

Post author By Daniel

Joining Data with the Placekey QGIS Plugin

Placekey is a free address and point-of-interest (POI) matching tool that is now integrated with QGIS via the Placekey Connector Plugin. Placekey does the work of address and…

Post author By Riccardo

OSM, PostGIS and Docker: an approach for automatic processing

In the summer of 2019 Michael Marz started to extract most important items from OpenStreetMap and published those extracts as geopackages on his webpage. Back then I looked…

Post author By Riccardo

Automated UI tests with AutoIt for QGIS

I hate testing! Yet I do understand that it is crucial for a good software solution. As I am often confronted with GUIs, I asked myself how to…

Post author By Riccardo

the housing marekt in Denmark as an animation

qgis2web in the wild

There are plenty of webmapping services out there. The best known might be mapbox, carto, arcgis online, google maps. But what they all share: they do not come…

Post author By Riccardo

Run GIS functions directly in Python with GeoPandas

GeoPandas, once installed, supports you with a handfull of GIS functions in your Python notebooks and will leverage your work with geospatial data. But to be honest: this…

Post author By Riccardo

How to create a custom Web AppBuilder Widget for your Portal with ORS

In the recent years I often worked with ArcGIS Portal / Enterprise and fell in love with the idea of writing widgets which I can use in the…

Post author By Riccardo