PrintTo try out this new version of the plugin, close the dock widget if it’s currently still open in QGIS and then run the Plugin Reloader plugin to load this updated version of our plugin. Add a basemap to your map project and zoom it to the general area of Dublin. When you then load the input files, you will see the two new layers appear in the layer list of the current QGIS project with the symbology we are setting up in the code. When you now start the analysis, what you see should look like the video below with the bus tracker widget continuously updating the bus status information, the bus tracks starting to appear in the QGIS map window, and square symbols starting to pop up for the events detected.
[NOTE: This video (3:04) does NOT contain sound]
The delay slider can be used to increase the breaks between two analysis steps, which can be helpful if the map window doesn’t seem to update properly because QGIS has problems catching up with the requests to repaint layers. This in particular is a good idea if you want to pan and zoom the map in which case you may notice the basemap tiles not appearing if the delay is too short.
Overall, there is quite a bit that could be optimized to make sure that QGIS remains responsive while the plugin and analysis are running as well as other improvements and extensions that could be made. But all this would increase the amount of code needed quite a bit and this has already been a rather long project to begin with, requiring you to read and understand a lot of code. As we said before, it is not required to understand each line in the code; the crucial points to understand are how we are using classes, objects, and inheritance in this project and make use of the other techniques and concepts taught in this lesson. Reading and understanding other people’s code is one of the main ways to become a better programmer and since we are approaching the end of this course, this was a good place to practice this a bit and maybe provide some inspiration for your term project. However, we certainly don’t expect your term project to be nearly as complex as the plugin created in this section!