I have the following situation:
I have a topojson map of postal code regions in Switzerland for use with shapemap visual. There are 4133 regions at 4-digit postal code level which is most detailed level in Switzerland. The file contains the postal code of each region so that Power BI can reference data correctly to the visual.
Now I want to create two additional shapemaps (meaning: two separate topojson files), one that combines regions on 2-digit postal code level and one that combines regions on 1-digit postal code level.
An additional use case will be to create a third topojson file that combines postal code regions into sales regions of my customer. So the input for combining the shapemap regions will be a list with postal codes in one column and sales regions in the second column. If you have a solution for that, the two maps above can be created as special cases of this third use case.
Is there a tool or proceeding that you can recommend for doing that?