Topic:
Rolling saved traverses cannot get back to original line interpretation.

Description:
A traverse (A) is defined within a 3d survey.  A user then rolls across the
survey performing interpretation and saves another traverse (B) at the far end
of the survey.  If the user opens traverse B and tries to roll back to traverse
A, he will not be on the exact line defined by traverse A.

Solution:
If you are rolling from saved traverses and interpreting along these lines, do
not delete your original saved traverse.  You will always need to roll forward
from that traverse to locate the correct interpreted line(s).  If the survey is
too large and there are too many rolls between the beginning and end of the
interpreted lines you can save multiple traverses, BUT ALWAYS begin rolling in
the same direction from a single traverse.  To get back to the same lines that
were interpreted while rolling you must start from that same saved traverse.

This problem is the result of differences between traverses snapping to the
nearest trace when saved.



Last Modified on: 04-MAY-99