This function extends print.sp by including a display and summary of the interval slot for the object.
# S3 method for intgrd
print(x, ..., digits = getOption("digits"))Prints object to the screen, identical to
SpatialPoints-class, as well as summary statistics for the
interval slot.
An object of class intgrd.
Additional arguments to print.
Determines how numeric values are printed to the screen
(default from sp package).