Return direction strings of all coordinates.
d=dir(t)
The DIR function takes an imat_ctrace object and returns an nx1 cell array of strings containing only the direction string for each coordinate. Most often these strings will be of the form 'X+', 'RZ-', etc., but in general can be any 4-character uppercase string.
>> t=imat_ctrace('5y', '6rx', '3z', '4x-')
t =
'5Y+'
'6RX+'
'3Z+'
'4X-'
>> d=dir(t)
d =
'Y+'
'RX+'
'Z+'
'X-'
>> whos
Name Size Bytes Class
d 4x1 386 cell array
t 4x1 284 imat_ctrace object
Grand total is
34 elements using 670 bytes
>>
imat_ctrace/imat_ctrace, imat_ctrace/node, imat_ctrace/id, imat_num2dir, imat_dir2num