[Qgis-user] How to outline regions consisting of multiple fields

[Jeroen Hovens]

Hi all,

 

I am trying to create a map with different visualizations for different
attributes.

The map is a basic municipalities map and has at least two other attributes
that I want to show.

Each municipality (each field/polygon) belongs to a region (attribute A)
and each municipality has a feature of some sort (attribute B).

Now I am trying to create a map that will show the borders of the
municipalities (the basic polygons in simple thin outline), the outer
borders of the region (only a thick outline) and for each municipality a
color representing the value of the 'feature'.

 

My question is: how do I create only a thick outline of the outer border for
each region on my basic municipality map?

I can give each region a color (style rule > categorize), but I don't know
how to create an outline of the region border. Anything I try with lines
affects every single polygon instead of just the outer border of the region.

Is it possible without creating a new layer with the regions as polygons?

Since I will color each municipality according to 'attribute B', I want just
the outer border for each region to be visible to visually indicate to which
region the municipality belongs.

 

Any idea's?

 

Regards,

Jeroen Hovens

 

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