https://www.cybertec-postgresql.com/en/getting-started-qgis-postgresql-postgis/ * EN [github][svg] Blog Cybertec LogoCybertec Logo * Services + Requirement Analysis + PostgreSQL consulting + PostgreSQL migration o Migration from Oracle o Migrating from MySQL / MariaDB o CYBERTEC Migrator + PostgreSQL Infrastructure o Setup & Installation o Kubernetes o Database architecture + PostgreSQL development o Database modeling o Functions & Features + Update & Upgrade + Optimization & Security o PostgreSQL Health Check o Performance Tuning o Enterprise Security o Security Audit + Troubleshooting & Data Recovery + PostgreSQL clustering and HA o Clustering and failover o High availability with Patroni o Synchronous and asynchronous replication o Scaling with PL/Proxy + Spatial Services o GIS Tooling o PostGIS OSM Downloader + CYBERTEC Partner Network * Support + Standard PostgreSQL Support o Product Support o 9/5 Basic Support o 24/7 Basic Support o 24/7 Enterprise Support + Advanced PostgreSQL Support o 9/5 Remote DBA o 24/7 Remote DBA o 9/5 Dedicated DBA o 24/7 Cloud-based Support + Support for Reseller o 3rd Level Support o CYBERTEC Partner Network * Products + Our Products o CYPEX - Build Apps & Forms o CYBERTEC PostgreSQL Enterprise Edition o CYBERTEC MIGRATOR o PostgreSQL Transparent Data Encryption o Scalefield - Private Cloud o Data Masking for PostgreSQL o PL/pgSQL_sec - Fully encrypted stored procedures + PostgreSQL Tools & Extensions o pg_timetable - Advanced Job Scheduling o pg_show_plans - Monitoring Execution Plans o pgwatch - PostgreSQL Monitoring Tool o pg_squeeze - Shrinks Tables o Walbouncer - Enterprise Grade Partial Replication o PGConfigurator - Visual PostgreSQL Configuration o ora_migrator o Patroni Environment Setup + Assessment Packages o Data Science Assessment Package o Start-Up Assessment Package o Spatial Data Assessment Package + CYBERTEC Partner Network * Training + Course Catalog + Online Training + Customized Training * PostgreSQL + Advantages of PostgreSQL + PostgreSQL Books + Solutions - Who uses PostgreSQL o PostgreSQL for Startups o PostgreSQL for governments and public services o Longlife solutions + Business Cases o Fraud Detection o PostgreSQL for biotech and scientific applications * Data Science + Data Science Overview + Machine Learning + Big Data Analytics * Contact Getting started with QGIS, PostgreSQL and PostGIS Posted on 2021-04-08 by Hans-Jurgen Schonig cloud gis OSM postgis postgresql QGIS scalefield Visualizing spatial data is an important task. In this mini-tutorial, you will learn how to quickly visualize OpenStreetMap (OSM) data with PostGIS and QGIS. The idea is to get you started as fast as possible, and to make the most out of your data. Installing QGIS QGIS is freely available as Open Source software and can be used free of charge. It is a powerful tool to edit and visualize spatial data which is ideally stored in a PostGIS-enabled PostgreSQL database. First, download QGIS from the official website. getting started with qgis: Downloadgetting started with qgis: Download Once the package has been downloaded, you can simply follow the installation instructions. The following gallery shows how this works. Installing QGIS should be relatively easy. getting started with qgis: Installation getting started with qgis: Installation getting started with qgis: Installation getting started with qgis: Installation getting started with qgis: Installation getting started with qgis: Installation getting started with qgis: Installation getting started with qgis: Installation Deploying PostgreSQL and loading OSM data The next thing we have to do is to install PostgreSQL and to load OpenStreetMap (OSM) data. There are various ways to load OSM data. Many people use osm2pgsql, which has become pretty popular over the years. If you want to learn more about loading OSM data into a PostgreSQL database, please check out Florian Nadler's excellent OSM / PostgreSQL tutorial dealing with this issue. Since we want to primarily focus on QGIS-related questions here, I have used Scalefield to create a small PostgreSQL instance and to load OSM data directly. Scalefield comes with a built-in mechanism to populate data sets directly during the provisioning process of your PostgreSQL service, as shown in the next gallery. OSM data with scalefieldOSM data with scalefield OSM data with scalefieldOSM data with scalefield OSM data with scalefieldOSM data with scalefield OSM data with scalefieldOSM data with scalefield Creating maps with QGIS Make sure that you have deployed your desired OpenStreetMap data. In my example, I simply loaded OSM data for Andorra because it is the quickest way to get started. However, any other data set will serve the same purpose. If you want to use QGIS to visualize your spatial data, the first thing is to define the database connection you want to use. Click on "Create a New PostGIS connection" and fill out the connection data in the form which pops up. connect QGIS and PostGISconnect QGIS and PostGIS The beauty here is that QGIS allows you to immediately verify the database connection to ensure that the connection works smoothly later on. The core concept we are looking at here is the idea of a "layer". A map is not usually made out of a simple column, but consists of various types of information all put into a single image. In our case we want to use columns from all four OSM tables. We can select the Andorra data set on the left side and mark those columns. QGIS will visualize the selected data for us immediately. Visualizing data with QGISVisualizing data with QGIS Visualizing data with QGISVisualizing data with QGIS Visualizing data with QGISVisualizing data with QGIS Visualizing data with QGISVisualizing data with QGIS Finally... Voila, you have visualized your first OSM data set. As you can see, the process only takes a couple of minutes. However, QGIS offers a lot more. You can create all kinds of fancy maps, and even edit your data. Speedy and practical! For a tutorial on using PostGIS to calculate optimized trip costs, see Florian Nadler's post on the Traveling Salesman Problem. Hans-Jurgen Schonig Hans-Jurgen Schonig has experience with PostgreSQL since the 90s. He is CEO and technical lead of CYBERTEC, which is one of the market leaders in this field and has served countless customers around the globe since the year 2000. 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