Virtual Fields and Layers

Virtual Fields and Layers

This course demonstrates how to utilize virtual fields and virtual layers within QGIS

Course Overview

Virtual Fields and Layers

This course demonstrates how to utilize virtual fields and virtual layers within QGIS. A virtual field is a field based on an expression calculated on the fly. Virtual fields are only saved in the project field in which they have been created. Similarly, a virtual layer is a vector layer that can be defined by the result of a query statement on any type of vector layer. These layers do not directly store the data but are views to actual data.

Experience Level:

Intermediate

Skills Covered:

  • Create a virtual field
  • Symbolize a layer with a virtual field
  • Add a virtual layer with a WHERE clause
  • Symbolize and label a virtual layer

Lessons1 hr

  • Virtual Fields
  • Virtual Layers
  • Course Survey

Course Overview

Virtual Fields and Layers

This course demonstrates how to utilize virtual fields and virtual layers within QGIS. A virtual field is a field based on an expression calculated on the fly. Virtual fields are only saved in the project field in which they have been created. Similarly, a virtual layer is a vector layer that can be defined by the result of a query statement on any type of vector layer. These layers do not directly store the data but are views to actual data.

Experience Level:

Intermediate

Skills Covered:

  • Create a virtual field
  • Symbolize a layer with a virtual field
  • Add a virtual layer with a WHERE clause
  • Symbolize and label a virtual layer

Lessons1 hr

  • Virtual Fields
  • Virtual Layers
  • Course Survey