The opportunity of Open Source GIS development is that the developers and geospatial enthusiasts can participate in the development of new and interesting projects and at the same time improve their skills. Open source projects are characterized by the involvement of many people, which promotes the idea of solving problems and sharing knowledge. Here is a step-by-step guide to help you get started with open source GIS development if you are new to it.
1. Understand the Basics of GIS
To start with, open source GIS development, it is recommended to have a good understanding of GIS concepts and principles. Learn some of the basic concepts that are used in GIS including spatial data, vector and raster data, geospatial analysis, and cartography. Online courses, tutorials, and textbooks can help one get an understanding of GIS basics. Some of the useful references include the Geographic Information Science & Technology (GIS&T) Body of Knowledge and various MOOCs (Massive Open Online Courses).
2. Choose Your Programming Language
Open source GIS projects have specific programming languages that they use. The most used languages in the development of GIS are Python, JavaScript, and C++. Python is widely used due to its ease of use and availability of libraries like GDAL, Fiona and Shapely for handling geospatial data. JavaScript is vital for any web-based GIS applications and that is why Leaflet and OpenLayers are great libraries. Select a language that you are interested in and the projects that you would like to work on.
3. Familiarize Yourself with Open Source Tools
A number of open source GIS tools and libraries are popular in the community. Start by exploring the following:Start by exploring the following:
QGIS: A GIS application for desktop use that is easy to use and has compatibility with numerous data formats and many plugins.
PostGIS: A module for PostgreSQL that enables spatial operations on the data and therefore a useful tool for handling spatial data.
GeoServer: A server for publishing and modifying geospatial data suitable for development of web services and applications.
GDAL: A library for reading and writing raster and vector geospatial data formats which is very useful in data manipulation.
It is recommended that you get to know these tools as it will give you a hands on experience and a better understanding of how GIS development works.
4. Join the Open Source Community
It is important to interact with the open source GIS community to get information and be part of the community. Get involved in the online groups and communities that are associated with GIS development. GitHub, StackOverflow, and GIS Stack Exchange are some of the best places for asking questions, sharing information, and meeting other developers. Also, attending the local GIS meetups or conferences can be helpful in terms of networking.
5. Contribute to Existing Projects
Once you are familiar with the basics, it is recommended to participate in the existing open source GIS projects. First of all, it is necessary to determine the projects that are of interest to you and correspond to your abilities. Check their documentation, look into their coding conventions, and look for issues in their task management systems. Begin by contributing in the form of bug fixes, documentation, or new features. This is a practical session where you will get to understand the development process and boost your morale.
6. Create Your Own Projects
Having contributed to a few open source GIS projects, one can then start his or her own open source GIS project. Select a challenge or gap in the GIS community that you would like to help solve. Come up with a project plan, state the features you wish to include, and start writing the code. Post your project on platforms such as GitHub to get people to join your project and give their input.
Conclusion
Getting started with open source GIS development process that can be described as fun and challenging at the same time, as it involves both the application of certain technical knowledge and the enthusiasm for the application of GIS. Thus, knowing the concepts of GIS, selecting the appropriate programming language, getting aquatinted with the basic tools, participating in the community, contributing to the existing projects, and developing new ones, one can contribute to the development of GIS. The open source development is a great way to work with like-minded people and get a lot of experience and contacts for your portfolio.