If you are interested how to install Valhalla on your Ubuntu 18.04 server, then go ahead with this tutorial. By the end you will have had to prepare your host instance with all necessary packages and dependencies to finally be able to make and install Valhalla.
If you are interested how to run Valhalla on your Ubuntu 18.04 server, then go ahead with this tutorial. Please install Valhalla (part 1 of this tutorial series) first. By the end you will be able to fire turn-by-turn directions requests to Valhalla on your host instance.
A short roundup of Qt Designer, which ships with QGIS and is the recommended program to design Graphical User Interfaces for QGIS Plugins. This post is complementary to our plugin tutorials or just a refresher. It also explains resources.qrc files in more detail, a usual pain point.
This post provides a basic reference guide for plugin development in QGIS v3. It describes the most important concepts around QGIS plugins, which a developer should be aware of, such as mandatory methods expected by QGIS, detailed explanation of the output of Plugin Builder 3 and more.
Follow our tutorial to get a better hang of developing QGIS plugins in QGIS v3.x. The resulting plugin will be capable of querying Nominatim's Reverse Geocoding API from user generated Lat/Long or X/Y in arbitrary coordinate systems and parse the API result into a QGIS Point layer.