Mapping parameters
A vector of property values. length(values)
should be one greater than
length(breaks)
if extend = TRUE
, or one less if extend = FALSE
.
If TRUE
, intervals are closed on the right, i.e. if values are exactly equal to a
break
, they go in the lower group. Otherwise, intervals are closed on the left, so equal
values go in the higher group. FALSE
by default.
Extend breaks
to c(-Inf, breaks, Inf)
, i.e. include numbers below and above the
outermost breaks. TRUE
by default.
If TRUE
, NA
values in the result will be left unchanged
from their previous values. Otherwise, NA
normally resets to the default.
Logical. Calculate breaks separately within each column?