  Dear useRs,
I drew 12 separate raster maps. I want to combine them in such a way the they appear on the same sheet in R, which will later on be saved. Each row should contain three raster maps, so in total we should have 4 rows with each row containing 3 rasters. I know that mfrow() can do it but I don't exactly know how?

Eliza 		 	   		  
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