multiplot: Multiple plot function If the layout is something like...
In frbl/airaR:

Multiple plot function If the layout is something like matrix(c(1,2,3,3), nrow=2, byrow=TRUE), then plot 1 will go in the upper left, 2 will go in the upper right, and 3 will go all the way across the bottom.

1	multiplot(..., plotlist = NULL, cols = 1, layout = NULL)

`...`	ggplot objects can be passed in ..., or to
`plotlist`	(as a list of ggplot objects)
`cols`	Number of columns in layout
`layout`	A matrix specifying the layout. If present, 'cols' is ignored.