possible to enable Historic data analysis on and off using restful api?

Hi heyjoe 

I'm afraid it's impossible to achieve that.Some articles for your reference.

https://bpcs.com/blog/power-bi-streaming-data-sets-the-good-the-great-and-the-gotchas

https://docs.microsoft.com/en-us/power-bi/service-real-time-streaming

Regards,