Print methods that simply print out the spline basis matrix without
unnecessary attributes.
# S3 method for bSpline2
print(x, ...)# S3 method for ibs
print(x, ...)
# S3 method for dbs
print(x, ...)
# S3 method for mSpline
print(x, ...)
# S3 method for iSpline
print(x, ...)
# S3 method for cSpline
print(x, ...)
Objects of class bSpline2, ibs, mSpline,
iSpline, or cSpline, etc.
Optional argument for future usage.
Object input.