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.
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.
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 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.
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.
If you digitize features for OpenStreetMap you might have used Landsat data or the Bing basemap. Now we do have one other source for our armchair mapping approach: Esri World Imagery basemap. In the past you were able to view the data. Using the basemap data for digitization was not allowed.
Introduction In my previous two posts I introduced the Cloud based data broker technology ERDDAP and demonstrated how one can use it to obtain geo-spatial scientific environmental data: Access sensor data on an buoy located in the Irish Sea . Get and display weather forecast data from the Global Forecast System (GFS). The use of data brokers to unify data catalogues is an approach taken by both the National Oceanic and Atmospheric Administration of the USA (ERDDAP) and the intergovernmental Group on Earth Observation (GEO Discovery and Access Broker). In this post I discuss the potential impact of this type…
Mapbox created a cloudless Landsat map in 2013. That was a huge step for all the webmapping enthusiasts as we got a composit image of the world with stunning ground resolution and still cloudless! Now EOX, a company based in Vienna, provided a similar product called Sentinel Cloudless. And it is “for free”.
Recently HeiGIT @ GIScience Heidelberg released a dedicated stable disaster versionof OpenRouteService (ORS) to support humanitarian logistics within specific regions of catastrophes with data from OSM in a more sustainable way. Since his start in 2008 OpenRouteServivce had been spontaneously applied for specific real world disaster cases already numerous times, for instance during the earthquakes in Haiti 2008 and 2010, in Nepal2015, and in Equador 2016. Yet this always involved manual effort to set the system up for the specific disaster which costed time and manpower. For this reason this was only manageable for specific larger disasters. In order to provide this…
If you are reading this post – you might know something about satellite imagery. This is a valuable source to power quite a lot of analytics and monitoring applications. In this post I’d like to give you an idea of how all this Big Data stuff can be obtained and processed online, using the single API called #VANE language. What is VANE? The VANE geospatial platform, that’s coming out of the Beta now, is a new project we started at Openweathermap, relying on our expertise in providing well-designed APIs for weather data which is widely used by devs community. The…
Tiled map layers are an important part of the digital mapping stack, since Google and others introduced their slippy maps quite some time ago. There’s a huge ecosystem of (open source) software for creating and hosting tiles for your custom mapping project. In this tutorial, I want to share what I learned while setting up a tileserver for our projects at Geolicious.
Two years ago I wrote the OSMroute plugin which enable the QGIS user to use the OpenRouteService API for geocoding of points, accessibility analysis as well as routing from A to B. Unfortunately the managing of a plugin/ open source tool is time-consuming/ hard. But fortunately Nils Rode lifted the plugin to a new level: OSM tools.
In one of my last posts I described the installation of a git server to improve collaborative work in closed environments. But developing solutions can be a pain in the axxxx if you need deal with user/OS dependent issues all the time. So let me introduce you to Vagrant: Vagrant is an open-source software product for building and maintaining portable virtual development environments.