27 Dec
2021
27 Dec
'21
11:02 p.m.
On Sun, Dec 26, 2021 at 08:00:49AM +0000, Ben Cooper wrote:
What does Survex actually do for all these loops?
It deal with any backsights up front and just adds a single link to the network for each survey leg. It's harder to properly account for partial backsights if we created a separate link for the backsight (e.g. backcompass and backclino but no backtape is common). But even just from a network solving perspective, if we generated a trivial loop for each backsight the network optimisations would later rediscover each trivial loop and collapse it to a single leg, but that would be less efficient than collapsing it when we have the knowledge it's a trivial loop as we read in that leg. Cheers, Olly