Calling all Shape map experts - need help creating a DMA map

[Quinnie2017]

Hi Everyone - After researching this forum, I have not been able to find a successful solution to create a Designated Market Area (DMA) map in PowerBi.  For those unfamilar with DMA's they are an area or region that can have the same media offerings.  These are designated by a company called Nieslen.

It looks the the PowerBI Shapemap option, which is currently in preview , might be able to solve this, but it goes beyond my ability to understand.  It requires loading a JSON file, which I think I might have found a DMA .json file here.  

My request is for some help to just get started and I can take it from there.  If you can get the DMA map to work using this .json that would get me started.

[Quinnie2017]

Marked as solution!  Thanks @HotChilli !

[HotChilli]

You've made all the right steps but the shapemap you've used doesn't render.  It's the nielsentopo.json one that works.

[HotChilli]

Add shapemap visual to report canvas.  Add data to Location field well. Go to 'Format' section of shapemap (the paintroller icon). Go to Shape section.  Load in custom shapemap.

[Quinnie2017]

I must be an idiot because I tried what you said and still can't get it to work.  Here are the files, can you tell me what I am doing wrong?

https://drive.google.com/drive/folders/1qwsDwRFcI-iEi2AV8livcO9Y0tssNyAu?usp=sharing

[HotChilli · Accepted solution]

Shapemap has been in preview since before the dinosaurs.

 I managed to get nielsentopo.json to render.  Here's the picture with some map keys:

Here's a tutorial to get started on shapemap:

https://docs.microsoft.com/en-us/power-bi/visuals/desktop-shape-map#:~:text=To%20enable%20Shape%20Ma... 

You have to have some data loaded in powerbi before it'll let you add a custom shapemap (it doesn't matter if it's dummy data, anything will do).  Just get a column in the Location field well to get started.

[Quinnie2017]

Thanks @HotChilli !  I've got data ready do load - no problem there, but I could never get the .json to render even after reading the help.  Do you mind sharing the .pbix or the steps you took to get it to render?