Keep coordinate systems.
cs=keep(cs,1:10)
cs=cs.keep(1:10)
KEEP returns an IMAT_CS object containing the coordinate systems specified in ID.
If ID is numeric, KEEP keeps the coordinate systems in ID that exist in CS in the order specified in ID. KEEP will issue a warning if there are coordinate systems in ID that do not exist in CS.
If ID is logical, the coordinate systems matching the ID mask will be kept.
>> fem=readunv('fem_file.unv')
fem =
IMAT_FEM Finite Element Model
1 coordinate system
30 nodes
10 elements
3 tracelines
>> cs=fem.cs;
>> cs=cs.keep(1:3);
>> cs=keep(cs,node.id==3);