Adding location of start and end points to the attribute table

Question

I want to add start and end points to my attribute table for each feature in one layer in terms of actual location and not distance form start meter i.e. start being 0 and end point 10 meters. Is there a way I could do this?

Answer 1

Use the expressions

start_point($geometry) and end_point($geometry)

This expression alone will result in NULL in your attribute table. To make it readable in your attribute table combine it with geom_to_wkt() or x() and y(). For example:

• geom_to_wkt(start_point($geometry)) (Use Text (string) as field type) or
• x(start_point($geometry)) || ', ' || y(start_point($geometry)) (Use Text (string) as field type)
• x(start_point($geometry)) (Use Decimal number (real) as field type)

Enter the expression in your field calculator and make sure to set output field type correctly as well as ouput field length and precision: