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[Wookey]

On Tue 28 Mar, Andy Waddington on Survey stuff wrote:
> Wookey discusses fixes to turn off "Fixed point not used" and/or "point
> already fixed" errors.
> 
> I think there is a philosophy error in Survex (!). Just because there is no
> survey fixed to a fixed point doesn't mean that a fixed point isn't used !

Back in the days when cave surveys were of one cave and you fixed an
entrance location, this used to be a useful warning (warning you that you
have put it the fixed point but forgotten to link to it).

For the sort of multi-cave datasets we have now it's just a pain.

So people using Survcex for simple dataset probably still find it useful.
Anyone here still find it useful?

> I feel that *FIX should *never* generate a not used error,

> *FIX_AND_TELL_ME_IF_NOTHING_CONNECTS_HERE ... command

Yes, I think the correct approach is to have modifiers for the *FIX
commands, which set whether you want to be told if it's not used, and
probably change the survex default to not tell you, and imply SDs.

> Connected with the same problem that prompted Wookey to devise this
> hack is the "Point already fixed at the same coordinates" error.
> So what ? If I think the point is in the same place as I thought it
> was before, that's fine, just get on with it. If for some reason
> (and I can't imagine one at the moment) you actually want this
> warning, then we should invent a
> 
> *FIX_UNIQUELY directive or something similar.
> 
> Of course, if I am *FIXing something at _Different_ coordinates then
> I do want a warning.

I agree - this is completely pointless - unless someone can thing of a
good reason we should just get rid of this warning, or at least relegate
it to '--fussy' status.

Wookey
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