Launch

Start directly with the "Assistant for Thematic Maps"".

Select type

Select "Ranged" and click on Next

Layer & Data Field

Select the layer "Cables" and the data field "FreeFibres".

Note: Only number fields are offered!

Define Areas

Define the areas in which a display should be valid.

If the range cannot be calculated using functions from the "Method" selection, set to "Custom", define the number of ranges and the range limits per range.

Define styles

Now switch to the "Styles" tab.

Now define a style for each area.

Reference

With the selection "Apply Attributes" you can control whether only the color, or also the width and pattern would like to take over.

Range 0.. 22

Area 22. 24

Area 24. 50