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Append an additional mark to existing marks.
mark
append_marks(x) <- value# S3 method for ppp append_marks(x) <- value# S3 method for tess append_marks(x) <- value# S3 method for psp append_marks(x) <- value
# S3 method for ppp append_marks(x) <- value
# S3 method for tess append_marks(x) <- value
# S3 method for psp append_marks(x) <- value
The S3 method dispatch append_marks<-.ppp returns a ppp.object.
S3
append_marks<-.ppp
currently only ppp.object is supported
a factor or numeric vector