How to use Viewshed

Question

Hello community,

I would like to make a Viewshed for a tower. The tower must have a height of 70 meters above the z-value from my TIN. If I am changing the z-value in the "input point observer features" I always get the viewshed-raster with the z-value from the TIN.

How can I calculate the viewshed from a point X,Y with an offset of Z from the ground?

Thanks in advance!

PeterKrieger · Answer

Hello community,

I would like to make a Viewshed for a tower. The tower must have a height of 70 meters above the z-value from my TIN. If I am changing the z-value in the "input point observer features" I always get the viewshed-raster with the z-value from the TIN.

How can I calculate the viewshed from a point X,Y with an offset of Z from the ground?

Thanks in advance!

The solution is to add a column in the observer point table with the name "OFFSETA" and their you have to set the heigt for your tower.