Digital Geography

From Cloud to GIS: Getting Weather Data.

A small bit of effort to improve presentation

Introduction In this post we are going to look at how to get weather forecast data and display it as a layer in a desktop geographical information system (GIS). The tools that you need are: A desktop GIS. I am going to use QGIS (free software) but I have done this with ESRI ArcMap as well A spreadsheet application. I will be using MS Excel but I have also tried this with Softmaker Office and I am sure LibreOffice (free software) will work or indeed any other spreadsheet application The Natural Earth Quick Start data set. This is a collection…

Extracting information from Sentinel-1

Detected objects from Sentinel-1 image

SAR images can see through clouds and in darkness, and are therefore very useful for operational monitoring of our seas. Detecting ships, icebergs, wind patterns, and oil spills is daily business in Europe with the Sentinel-1 satellite. Want to see for yourself how to extract information from a SAR image? In this tutorial, we’ll use the SNAP toolbox for Sentinel-1 to extract information on the number of ships at sea.

Proud of the Linux world

We are LinuxSometimes I have something to tell, but also need to realize that it is not so easy to explain. How many times have you heard of Linux, or maybe Ubuntu? Probably very often, right? I imagine that the comments were (between you and those who spoke, newspaper or friend who is): “Do I need to delete Windows?”, “It is easy, just if you know to program!” or “but there are problems with the printer…” But what makes me proud is when I ask the question, but you use it for work? The Linux world has had a big leap forward…

ERDDAP: Diving into a Data Ocean

Three hurricanes in the Pacific

Data Lakes has become a popular term in the Big Data community. It’s used to refer to a large storage repository and processing engine. However there is now a technology from NOAA (National Oceanic and Atmospheric Administration of the USA) that turns its existing distributed data network of Petabytes of Open Data into what can be described as a Data Ocean! This technology is called ERDDAP and it provides fixed entry points on the Internet from which data can be searched for, queried and transformed. This functionality is made available via a human interface (web site) and Restful Web Services.

Python and Webmaps: folium

median_ageWe have seen some easy ways to create webmaps without learning JavaScript or loosing sort of control of our data in terms of using a platform like cartoDB, mapbox or AGOL (ArcGis OnLine). There are R and QGIS connectors which translates your current data and project to a leaflet or openlayers based webmap. Today I worked with folium which creates a webmap directly from Python. Follow me!

Evolving Geographic Information System: OpenWebGIS plans & its crowdfunding campaign


Perhaps you have already used in your work OpenWebGIS or just have seen it or read about it. Due to this system exists since 2014. But we will describe OpenWebGIS briefly. It is an open source online/offline geographic information system for work in web browser or mobile app. Since its foundation, a great number of users have benefited from using this system functions.

ally! What?

allyOkay I have to confess: I was invited to the beer friday at ally HQ in Berlin Mitte. I liked what I saw there and I also had a nice chat with Uli whom I met during the geo Berlin Meetup for the first time. So let’s have a look at what ally is about.

The new flickr2qgis plugin for QGIS

Photos fetched by flickr2qgisIn the last week I saw a post on the German ESRI page called GIS-IQ which featured a new widget for ArcGIS which needs you to have the “ArcGIS Web AppBuilder Developer Edition 1.2”. This widget lets you fetch images from flickr and probably show it on the map. I haven’t tried it yet but I thought: lets build something similar for QGIS… so here is my flickr API plugin for QGIS

HERE maps: Free navigation apps for web and smartphones

HERE maps Berlin-Munich by cat

Navigating from a to b is really easy today. Once you have a power connector in your car (bike, bicycle, scooter or whatever) and a mounting point, smartphones are absolutely comparable with common navigation units for vehicles. App sharing onto new car infotainment systems makes it easy to choose your preferred navigation software also in current car models, if you’re not satisfied with the build in software. Also on your desktop many applications will guide you to your preferred destination. It’s time to check out the current navigation solutions on the market.

How a QGIS plugin saved my day: autotrace

3483780One of my favourite horror exercises for students was the digitization of geological maps. Everyone hated it as you need to take of snapping options, correct attributes, and always needed to check with the background map which was most of the times a bad quality scan of an old never-heard-of-this-country geological map. Today I needed to do this work for myself… what goes around, comes around.