Deploying An Existing Django Application to AWS Ubuntu with Apache

Django is an excellent web framework that allows for excellent integration of geospatial data with other database functionality. The built-in development server is excellent during the development phase and is exceptionally easy to configure, but cannot handle concurrent connections and therefore cannot be used in a production environment. Apache is one of the most commonly […]

Troubleshooting “django-admin is not recognized”

When developing a Django application, one of the first steps is to run the django-admin startproject command from the terminal window. In a Windows environment this can lead to the following error: ‘django-admin’ is not recognized as an internal or external command, operable program or batch file.   To fix this, first close the terminal […]

Using UAV mounted methane sensors to to find natural gas leaks

Silver Spring Energy Consulting Ltd. is working closely with Burnt Lake Gas Coop to test and implement an aerial mounted laser methane detection system to quickly cover short segments of high pressure gas distribution lines in areas with challenging ground access due to variable terrain, underbrush and livestock. We are using our brand-new Laser Methane […]

Building Plugin Framework for QGIS 3.x

Part 1 Understanding and creating a new plugin framework QGIS 3.0 can be extended with a wide range of functionality using plugins. While there are thousands of plugins available in the Plugin manager, it is often necessary or advantageous to create your own plugins to automate common tasks or add extra functionality to a workflow. […]

Using PyCharm as an IDE for QGIS 3 plugin development

Developing plugins and other Python scripts can be a daunting task for the uninitiated. Using an IDE (Integrated Development Environment) like PyCharm can help keep everything in one place and even integrates version control systems like Git. Unfortunately, unlike ArcPy you can’t just set the interpreter to the included Python 3.7 installation for QGIS and […]

Installing Geoserver on Ubuntu Linux 18.10

GeoServer is a Java-based software web-server designed for sharing geospatial data on the web. It uses the Web Map Service (WMS) and Web Feature Servce (WFS) standard for sharing web maps and actual geospatial data sets. This allows simple sharing and editing of geospatial data. This document will record a step by step process for […]

Creating Vector Data in QGIS

This will cover creating basic vector data in QGIS. Included here will be instructions on how to create shapefile layers, and GeoPackage layers, and creating new geometry tables within a PostGIS Database.   Creating Shapefile Layers Creating Shapefile layers in QGIS is as follows: Open a QGIS project and save the project file in an […]

Adding XYZ Tiles to a QGIS Project

QGIS natively supports adding XYZ tiles to projects as background layers, from multiple sources. Here is a basic walkthrough as to how to connect XYZ tile services to your QGIS project. Open a QGIS Project and navigate to the ‘XYZ Tiles’ option in the Browser panel. Right click and select ‘New connection…’ In the XYZ […]

Converting a String Field to a Numerical Field in QGIS

Numerical data saved as a string in a PostGIS table column needs to be converted to a numerical data type to be properly analyzed. Below is a process by which to convert string data to real numbers in QGIS. Open the layer with the improper string column in QGIS, and toggle editing mode by selecting […]

Translating Vector Geometries

Translating geometries involves displacing vector data using a pre-defined offset distance from the current position of the data. In this case, we will be using this data to alter UAV flight paths (vector line data). This will involve shifting the paths to the East, West, North, or South, depending on the orientation of the flight […]