In this chapter, we built the core foundation of our application. In each of our vector and raster folders, we created three new modules that allow us to access, edit, and share some popular geographic data formats. Our folder structure should, therefore, look something like this:

This is the minimum we will need for any type of GIS application. We can theoretically, at this point, make a minimalistic application focused only on loading and handling file formats. In the next chapter, we jump straight into making the visual interface application, so we can have a real interactive application up and running as soon as possible.