There is possibility to show subplots in map in R. The goos things is about the variety of plots and style that we can have in power BI using R codes. the main process of creating Subplots in Map using R scripts has been explained in http://radacad.com/have-more-charts-by-writing-r-codes-inside-power-bi-part-3
for creatin this charts you need below packages to be installed in your local R version
install.packages(rworldmap)
install.packages(sp)
install.packages(methods)
install.packages(TeachingDemos)
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