Maps - two sets of borders (subdivisions, e.g. state and county)

[s--turn]

Hello,

I work for an organisation which has divided the UK into 8 "Regions", and each Region is subdivided into a small number of "Hubs".

I have a topojson (and geojson) file for the Region borders, and another one for the Hub borders.  I can thereby produce EITHER a map that shows the Region borders, OR a map that shows the Hub borders.

I want to produce a map that shows both - with the Region borders thicker than the Hub borders.  This seems like a common requirement (e.g. I'm sure some users would do this for things like states and counties), but I can't see how to achieve it.  

Thanks in advance for any suggestions! 

Edit: the main use case for this kind of map would be to publish it as an image, so I'm less interested in the interactive side of things e.g. drilling down as mentioned here https://learn.microsoft.com/en-us/power-bi/visuals/power-bi-map-tips-and-tricks#use-geo-hierarchies-... 

[Anonymous · Accepted solution]

Hi @s--turn ,

I recommend utilize the ArcGIS Map Visualization. The ArcGIS map visualization in Power BI offers extensive customization options, including the ability to add multiple layers to a map. Each layer can be customized independently, allowing you to set different border thicknesses for your Regions and Hubs. You can add your topojson or geojson files as separate layers and customize each layer's border thickness as needed.
Interacting with an ArcGIS map that has been shared with you - Power BI | Microsoft Learn
Create an ArcGIS map in Power BI - Power BI | Microsoft Learn
When adding your layers, ensure the Region layer is added first with a thicker border setting, followed by the Hub layer with a thinner border setting. This layering will ensure that both sets of borders are visible and distinct from each other.

Best Regards,
Dino Tao
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