Digital Geography

Query OpenStreetMap in ArcGIS: OSMQuery

QUickOSM is my weapon of choice when it comes to downloading data from OSM in QGIS. The tool offers an easy way to access tag/key combinations with a designated spatial query. As I was asked how many bus stops Berlin has, I was interested in a similar approach for ArcGIS. So I created my own little tool: OSMQuery.

Copernicus, Sentinel and your favourite GIS

The Copernicus Program provides an interesting alternative data source for your work with Landsat data… Sentinel images: Copernicus will deliver an unprecedented volume of free data, provide new operational services and foster new business opportunities and job creation. The data itself is collected since 2014 (Sentinel 1A) and the operation is scheduled to deliver data till 2020 at least. But how to get the data into the GIS of your choice.

Short Announcement: kepler.gl is available now – free and open

Back in 2016 Uber surpised the geo market with its solution “deck.gl“, a “predecessor” of kepler.gl: WebGL2 powered geospatial visualization layers The visuals were quite stunning: You can find some more information about deck.gl 4.0 at the Uber blog. Kepler.gl is build on top of this Uber framework: a data-agnostic, high-performance web-based application for visual exploration of large-scale geolocation data sets. Built on top of deck.gl, [it] can render millions of points representing thousands of trips and perform spatial aggregations on the fly.

QGIS 3 officially released

On 24th of February, the QGIS developers have officially released QGIS 3 (codename “Girona”). It is the third major version of the free and open source cross-platform GIS software. In this post, I want to tease you with the most important infos and installation instructions.

Short Announcement: OpenWhateverMap

Choosing a basemap for your cool web map is always crucial for the style and perception of your map. A colorful basemap like watercolor might be stunning but also interfering with your data visualization. In contrary a grayish basemap might look a bit boring but your data visualization will be crucial. If you’re unsure and a playful type of developer: Use OpenWhateverMap!

ArcGIS Online (AGOL) for free: The Developer Way

You might have heard of ArcGIS Online (AGOL) already: ArcGIS Online is a complete, cloud-based mapping platform. Make and share beautiful maps, and do everything in between. It’s possible only with ArcGIS Online, a scalable and secure software-as-a-service hosted by Esri. But as there is nothing for free in this world the usage of ArcGIS online with all capabilities (batch geocoding, hosted feature services, app creation, etc…) will cost some money, aka credits, as well. If you use the developer program of Esri you can use almost everything from AGOL as you will receive 50 credits for free every month!…

Service Areas, Traffic and QGIS

Our author Riccardo recently published an article on GeoNet where he described the traffic aware analysis of service areas (isochrones) in ArcGIS Pro with the analytical support of ArcGIS Online. I searched for a way to do something similar in QGIS. So let’s follow the white rabbit.

Short Announcement: Your Input is Needed… A Readers Survey

We are always looking for new ideas, tutorials, work flows, solutions. Unfortunately we were not able to write so much in the past for our beloved blog Digital-Geography.com. Therefore I am asking you today: What do you want to know, read, see, be advised on in the future? Take this short survey as a starting point so we can gather your ideas and write about the stuff you would like to read in the future.

Create Bounding Boxes without Desktop GIS

Bounding boxes are crucial for a lot of geospatial projects: wether you need to limit the extent of your web mapping application or need to cut your research data to the area of interest, bounding boxes are used everywhere. Here is a nice little tool from Klokantech that helps you generating bounding boxes in a variety of formats in your browser, without even opening your desktop GIS.

Short Announcement: Retro View of Mankind’s Habitat / Pastvu.com

Once in past there was a project called Panoramio were you uploaded your photos of landscapes or places around the world and it was explorable via a map. This was a great tool to digitally visit your next destination and wander around this beautiful planet. The project/service itself is not longer available. But there is pastvu.com which offers another approach: upload historic images and place them on a map.

OpenRouteService API: A Leaflet example for Isochrones

The page OpenRouteService.org is a very easy to use website which provides routing from A to B via C. It also allows to choose between different routing types for trucks, pedestrians or bicycles and isochrone analyses based on time and distance. In this article I would like to show you, how to embed the OpenRouteSevrice API into your very own Leaflet based webmap.

Donut Polygons in QGIS, ArcMap, ArcGIS Pro and geoJSON

Donut Polygons were the nightmare in first GIS courses. At the very moment I can’t remember why but the concept of an inner and an outer part makes total sense in the real world (house with a patio, lakes with islands, Rome with the Vatican City) yet the creation of those was never the covered in the basic “how to edit”-classes. So how can we create them with QGIS, ArcMap as well as ArcGIS Pro and geoJSON? In this tutorial I will cover this basic task.

Short Announcement: PlayMapsCube using Three.JS

We all played around with this little thing: wood labyrinths with one or many little balls called a “Ball-in-a-maze puzzle”. The goal was to find a path through the labyrinth so the ball was not trapped by the holes in the board: Google leveraged the idea itself and made a funny little game PlayMapsCube out of it to communicate the ideas and logic behind one of its main products: Google Maps.