Learn QGIS - Fourth Edition

Styling layers

Since we now know how to load data, we can continue by styling the layers. The simplest option here is to load a premade style (.qml file):

v_layer.loadNamedStyle('D:/QGIS_3_4/airports_style.qml')

This will return True if the .qml file is found:

 ('', True)

Use the following command to set the market style:

v_layer.triggerRepaint()

Make sure that you call triggerRepaint() to ensure that the map is redrawn to reflect your changes.

You can create airport_style.qml by saving the airport style you created in Chapter 3, Visualizing Data. This can be done by going to Layer Properties | Style | Save Style | QGIS Layer Style File, or, alternatively, you can use any other style you like.

We can also create a QGIS style using the console. ...