Property (attribute) of the data to be styled, as string.
breaks
A vector giving the breakpoints between the desired classes.
closure
Specifies whether class intervals are closed on the left, i.e. >=breakpoint ("left", the default) or on the right, i.e. >breakpoint ("right").
out
Handling of data outside the edges of breaks. One of 0 (left and right-closed), 1 (left-closed, right-open), 2 (left-open, right-closed) or 3 (left and right-open). Default is 0.
style.par
Styling parameter as string. One of "col" (graduated color) or "rad" (graduated radius). Graduated radius can only be applied to points.
style.val
Styling values, a vector of colors or radii applied to the classes.
leg
Legend title as string. The line break sequence \n may be used for line splitting.
...
Additional styling parameters, see styleSingle for details.