[R] Shapes of the districts of Brandenburg

[Ferri Leberl]

Dear ∀,
I have today done tentative steps in the use of the cartogram packages, trying the examples on page
https://www.rdocumentation.org/packages/cartogram/versions/0.2.2
Can anybody tell me how to adapt the examples to the districts of Brandenburg?
I know the population data relevant to my example. If anybody can tell me how to load the shapes (if available) this might solve my problem.
Thank you in advance!
Yours, Ferri