st_check_dim: Check for "XYZ", "XYM" and "XYZM" sfg classes
Description
Check for "XYZ", "XYM" and "XYZM" sfg classes
Usage
st_check_dim(sfc)
Value
LOGICAL indicating if any sfg element of the sfc object has class
"XYZ", "XYM" or "XYZM". Internal function used to check for 3 and 4
dimensional objects.