Chapter 2. Querying Vector Data

In this chapter, we will cover the following recipes:

• Loading a vector layer from a file
• Loading a vector layer from a geodatabase
• Examining vector layer features
• Examining vector layer attributes
• Filtering a layer by geometry
• Filtering a layer by attributes
• Buffering a feature
• Measuring the distance between two points
• Measuring the distance along a line
• Calculating the area of a polygon
• Creating a spatial index
• Calculating the bearing of a line