Subsetting ShapeMap objects essentially passes the data to sf.
See sf
Usage
# S3 method for class 'ShapeMap'
x[...]
# S3 method for class 'ShapeMap'
x[...] <- value
Arguments
- x
object of class ShapeMap passed to sf[]
- ...
other parameters passed to sf[] <-
- value
value to be passed to sf[] <-