Units on fix

[Olly Betts]

On Tue, Jul 08, 2008 at 03:54:15PM +0100, Andrew Atkinson wrote:
> I have some data from a cave which has the calculated position  of each 
> station.
> I believe the easiest way is to fix all the points and use no survey to 
> join them all up. Any comments?

That's often easiest.  You can add "*data nosurvey" legs to join
stations - these have no measurements and just take up the length
and orientation required to join the stations they connect.

> P1	586.5	79.4	565.6
> 
> The data looks like the above the units for the grid are in metres with 
> the 52 000 missed off x and 36000 off y, as we intend to add other caves 
> outside the one km square is there anyway to add the 52000 to all x and 
> 36000 to all y. Also to make it really inconvenient the height is in 
> feet. Is there anyway I can tell survex that the units of z are in feet

Neither of these is possible currently (as the numbers are coordinates
in the implicit grid in metres), but both probably should be - if these
coordinates were handled like other quantities, then you could specify
units and a zero offset.

Cheers,
    Olly