Data, Maps & Landscape

A spatial Blog

Tag Maps Python Implementation, HDBSCAN and Emoji Clustering

An email today made me aware that I really need to update the YouTube video tutorials on Tag Maps to the new Python implementation. This made so many things easier. The time for processing data for a typical map based on 200,000 photos is now down from 1 hour to 2-5 Minutes (kudos to the […]

Painted by 1,387,131 Artists

The temporal aspect often isn’t visible in static visualizations, but time & space aren’t separable. These visualizations show how Flickr users ‘paint’ a collective map of spatial photo attribution and valuation by contributing thousands of personal experiences each day from 2007 to 2017. The first animation shows global photo locations, with accentuation of areas in […]

Tag Maps Video Workshops

In the last few months, I put some work into the availability of methods and tools for tag maps generation. I hope the following collection helps to answer some of the questions I received from people who are interested in creating similar maps: First, there are now two Video Tutorials available that demonstrate how to […]

Paradigm shift in Germany: Open Goverment Data

Last week, the German government finally agreed to the implementation of the Open Data and Open Government action plan before the end of this year (2016). Some explanation to the unfamiliar reader: Unlike in the USA and in many other countries, data collected by public administration units in Germany is usually not available to the […]

Different photo patterns based on user origin classification

The base for the following visualizations are two datasets: (1) 147 million worldwide photographs from Flickr, georeferenced between 2007 and 2015, and (2) 415,000 user locations (from 1.3 million total number of users), geocoded through the Bing Maps API. My original intention was to validate the location information that is provided by users on their […]

LVMF Analysis/ Flickr comparison

I recently conducted an analysis of vantage points in London that are protected by the London View Management Framework (LVMF). Shown in red are locations of photos that contain references (title/tags/description) to view/vantage point/skyline/’over london’/’of london’ etc. For some vantage points, a strong correlation exists between Flickr photos and the LVMF protected viewing location (Primrose Hill summit, […]

Paper published in Landscape and Urban Planning

I received the invitation for contributing a research paper to Landscape and Urban Planning back in October 2012. I am very happy that this paper now appeared in Vol. 142’s Special Issue: Critical Approaches to Landscape Visualization. Considering the diversity of contributions and topics in this special issue, the guest editorial team, specifically Katherine Foo and Emily […]

Toolkit available

I finally found the time to publish the tools I used for processing and visualizing Flickr photo data (e.g. visualizations on Primarily, this step is intended to supply updated software versions to Workshop participants (University of Waterloo, University of Toronto, University of Technology Dresden). All parts of the toolkit are Creative Commons CC BY-NC-SA 4.0 (this is a non-commercial license, in accordance with Flickr’s […]

Visualizations of globally georeferenced Flickr photos

Over two years and no update or blog entry! I thought this would be a good start to add some content to this site. The maps below are visualizations of geotagged photos uploaded to Flickr between 2007 to 2015 and geotagged with the highest location accuracy (streetlevel accuracy). I generated a number of different visualizations. […]

Hello Real World.

I finally did it – setting up my blog. This will be a place to collect thoughts around my thesis I am currently working on: Network Landscapes and everything related to it. This means writing about new developments I find interesting; programming and code-snippets; GIS and data analysis; the mind, cognition & perception of landscapes […]