QGIS Rule Based Labeling filter string from a value

Question

I'm relatively new to QGIS. Recently I started mapping the hiking trails of Nepal. I used a GPX recorder application from Android Play Store. While entering the waypoint, I entered the name. The entered waypoint is in the Name section of the record. I have used a unique name for different types of waypoints.

• Node - Junction
• POI - Point of interests
• Road - Change in type of path.

Example : Node 3 1 correct 2 hiking trail

I want to filter the nodes by filtering the string 'Node'. How could I do that?

Answer 1

Assuming you have a point layer with a field name Name labeled as follows:

To filter the labels, you need to go to Rendering (Last tab with brush icon) → Show label →　Edit, and replace the word NULL with the following expression:

"Name" like 'Node%'  

Replace "Name" with the field name that holds the name of the field that you want to display their labels.

The expression means selecting all labels that start with the word Node. If you have the word Node in the middle of the text, just add another percent character before the word Node to become

"Name" like '%Node%'

Here is the output: