It’s been a while, since I last developed things for qgis2web. To be honest: I lost focus on the whole project after we decided to merge qgis2leaf with the openlayers exporter back in 2015. Tom Chadwin and many others did a great job and managed to develop the state of-the-art plugin when it comes to publishing content right from within QGIS. But as I was lucky I had the chance to develop some interesting things for QGIS2web in the last weeks.
Let’s assume you like cruise ships, tanker, ferries or you’re so fortunate and own a fleet of vessels cruising over the oceans. But where the heck are the ones you’re interested in. First you can visit MarineTraffic and search for the Vessels you’re interested in. But what if you want to keep track of those vessels or if you want to put them on your “own” map. Now Python comes in handy and I’ll show you how to gather coordinates and put them on a map using the ArcGIS API for Python.
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.
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!
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!…
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.
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”.
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.
About four years ago, Daniel wrote a short article on how to publish a GeoTiff as maptiles and how to use this in a leaflet map. I would like to refresh that knowledge and apply this to the current release of the NASA images (“Black Marble 2016”) which were published last week and also compare the images using some LeafletJS magic.
Google Maps is one of the most popular web-based map services. If you want to adjust its style you can easily define a custom style sheet and embed it as JSON element into your HTML-code. Because there are lots of map elements you can style, it could be a good idea to use one of here introduced web service specialized on Google Maps style creation.