fun guide_legend(nRow: Int? = null, nCol: Int? = null, byRow: Boolean? = null): Map<String, Any>
Legend guide. Legend type guide shows key (i.e., geoms) mapped onto values.
nRow - A number of rows in legend's guide
nRow
nCol - A number of columns in legend's guide
nCol
byRow - A type of output: by row (default), or by column
byRow