Can I use the XYZ coordinates directly in a total station, or do I need to convert them to UTM ?

My total station seems to support this, as input for rectangular coordinates can have up to 8 digits and 3 decimals.

As I understand the XYZ projection, it should also be linear in all 3 axis, so it shouldn’t be a problem?

# Can I use XYZ coord. from Reachview directly in a total station?

**wizprod**(Christian Grüner) #1

**peter**(Peter Jones) #3

Grid coordinates will be fine with a total station but if your using geodetic coordinates you will need to apply a scale factor to your total station measurements.

Most survey loggers can do this (SurvCE, Field Genius etc…)

If the TS has on-board software you may be able to just type the lat, long in to the unit.

**wizprod**(Christian Grüner) #4

Thanks!

I Can input the scalefaxtor directly, so it should take that into account hope.

As far as I could read, this is only applied to the XY-part, correct?

**peter**(Peter Jones) #5

Scale factor can be a complicated subject.

It all depends on the size of your project and what coordinate system you are using.

If you want to read up on it see the links below.

**wizprod**(Christian Grüner) #6

Thanks !

So, if I have 2 points from my RS+ (WGS84), and I measure the distance between the 2 with the EDM. With no scale-factor, this 2 distances should be the same, correct ?

If I want to use the distance for photogrammetry, and the software is using WGS84, do I need to use a scale factor here?

Edit, answered my own question, as I modified an existing photogrammetry project. I had a few scalebars in the project, and correcting those with the appropriate scale factor, I was able half the error

Gotta love it when things make sense and numbers add up!

**wizprod**(Christian Grüner) #8

Seems like I don’t have to, from what I can see I wouldn’t like to have laptop out on-site.