Chapter 2. Querying Vector Data

In this chapter, we will cover the following recipes:

• Loading a vector layer from a file sample

• 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 distance along a line

• Calculating the area of a polygon

• Creating a spatial index

• Calculating the bearing of a line

• Loading data from a spreadsheet

• Accessing layer metadata