Add tracelines.
tl=add(tl,id,conn,color,desc)
tl=tl.add(id,conn)
tl=tl.add(id,conn,color)
tl=tl.add(tlnew)
ADD will add a traceline or tracelines to the IMAT_TL object.
ID is a vector containing the element IDs. They must be unique.
CONN is a cell array of vectors containing the traceline node connectivity.
COLOR is a numeric vector containing the traceline colors. If not supplied, or it is empty, the default color of 1 is used.
DESC is a cell array of strings containing the traceline descriptions.
An alternate calling sequence is to supply an IMAT_TL object NEWTL to add.