Greetings: 

 

Could anyone advise me how to make transparent polygons in plotKML? I am
overlaying polygons in a SpatialPolygonsDataFrame object into Google Earth -
Seems I can make the polygons any color (e.g., yellow - see example) except
transparent

 

plotKML(mySPDF, colour_scale ="#FFFF00")

 

Appreciately, Seth Bigelow


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