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

[Matt Boyd]

Hi Jereon,
what I think you wan to do is create a merged region "A" layer that sits on
top of your municipalities layer.
You could do this by copying the municipalities layer. Then, on the copied
layer merge the municipalities by attribute (the region attribute).
Then set the properties of each layer visualization to suit.

I don't think there is a way to just select the outline / extent of the
regions from the municipalities and display that but still keep the
municipalities separate. There may be something with a virtual view if you
loaded it into a GIS database but I'm just guessing now.


Matt

On Mon, Sep 11, 2017 at 10:04 AM, Jeroen Hovens <mail at groenebij.nl> wrote:

> 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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