Error in loop closure algorithm?

[John Halleck]

On Thu, 12 Aug 2004, Olly Betts wrote:

> Date: Thu, 12 Aug 2004 17:47:14 +0100
> From: Olly Betts <olly at survex.com>
> To: John Halleck <John.Halleck at utah.edu>
> Cc: Mike McCombe <mikemccombe at btinternet.com>,
     Survex User Group <survex at survex.com>
> Subject: Re: Error in loop closure algorithm?
> 
> [...]

> The example Mike gave (with the implicit fixing of station 1) has a loop
> with a control point and a single leg linking this to a second loop with
> a blunder in.  That's rather different to the linked loops example you
> gave in an earlier mail.

 In that case I have my head ** ** **s, I miss read his original post
 to be a the version that I drew... (The linked loops example.)

  If that wasn't what he had, then obviously what I said didn't apply.
  My appologies to all for the waste of time.
  
> Mike's network has articulation points at either end of the single
> linking leg so solving the first loop (and fixing the coordinates of all
> the stations in it) then solving the second loop should be equivalent to
> solving the whole system.  Hence nothing in the second loop should
> affect the coordinates of stations in the first loop.

  You are right.
 
> [...]