Leica Viva Smartworx Hidden Point Routine
Been struggling for years in figuring out on how to batch transfer disto measurements to Smartworx. This is about the Hidden Point routine is Smartworx wherein using the trilateration (2 Slope Distances) method, I always end up filling up text boxes individually. I don’t know if I keep on missing something but when I hit the Disto transfer button, it always end up writing slope distance with zero vertical angle value. If I choose the vertical angle in Disto and hit the transfer button, it ends up writing the angle but overwrites the slope distance with zero value.
Any experience?
- 5 Replies
The hidden point routine is not about doing a distance distance intersection, it is about using a certain type of rod that has two prism assemblies.
The picture in this link is of the rod broken down, which is not the most helpful but you get the idea; a rod of known length usually determined by number of one meter extensions with two prisms in line with the rod enabling the calculation of a point at the end of the rod with the rod facing in any direction rather than just plumb.
https://www.stakemill.com/index.php?main_page=product_info&cPath=121_191_355&products_id=990
For a less precise approach you could shoot a level rod reflectorless at a known interval with known length but I do not see any place where a disto would come into play.
It is a great approach for getting to hard to reach places, I like to use a bipod, clamp or bungie cord to ensure the prisms are stable through the routine.
There is actually a Hidden Point routine in GPS environment. What you’re referring to is in TPS environment.
Ah, I thought that something seemed funny, well, I got nothing for you there. Good luck, too bad user “Survey the Mark” never comes around any more, he would know.
I use this method…although outside of the data collector.
https://amerisurv.com/2008/10/31/tips-tricks-hidden-point-offset/
Thanks Shawn.
I have Captivate on my dc and I dont have that double prism rod. I use a 360 prism and make sure the same face is pointed at the instrument for both shots. I set up a spreadsheet to crunch the numbers.
Nice prism pole and cool method.
I always just shot 3 visible nails, taped the distance to the bar, made 3 measurements in my field notes, and had it calc’d back at the office or used the Point-Point-Point COGO intersection on the Leica 1200. Or one could do 2 point radius intersection with an inverse to the 3rd as a check. I always had nails and a tape measure in my pocket.
Sorry for the off-topic. I have never used a Disto with Smartworx. By this link, both Viva and Viva LT should be able to do the hidden point routine with a Disto:
https://www.mainetechnical.com/mc_files/3/Leica_SmartWorx_Viva_DS_us.pdf
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