SAR704 wrote:
An offset option would enable one to have parallel poly lines at a fixed distance from the centre one, without them stockpiling on top of each other. IE where the track takes a 90 degree turn, and they all end up in exactly the same place, unless one manually places them at a certain distance from another one.
I have done something like that a couple of years ago, but in the C# language, not in C++. And in a completely different application domain. I sometimes miss such a feature myself for TransDEM, but won't make promises here.
SAR704 wrote:
And also, is there a way to add say a polyline worth of UTMs in one session? IE add say one with 18 zoom, then add a second and third parallel line at some other point. It would reduce the chances of the dreaded 'follow up error getting map'.
No chance here, unfortunately. Server behavior is unpredictable.