LP360 as an initial validation tool

We would be insterested in hearing more about the end product you would like to produce that would aid in performing dZ adjustments. Currently we do not have any direct tools to perform these adjustments. Here are some options that may be useful as an indirect way to perform the analysis you are after:

o There is an ArcToolbox tool called Shift LAS file that can be used to shift the z coordinate up and down in las files. This performs in batch on a set of selected las files. The disadvantage here is that it does not perform a different z for different flightlines.

o You can display by flightline or point source in the profile which is useful for viewing the overlap between flightlines. You can also drape by flightline which can further emphasize the difference between the flightlines. Use the graticles or measure tool to estimate the difference. You’ll need to define a point source legend first in the profile view before using the display by point source or flightline.

o As a custom option you can use the LPObjects library in vba to modify the z coordinate for points and you can customize it to change the z coordinate differently based on flightlines. We can provide a simple example of how to loop the points in a file and change the z by flightline if you are willing to explore this option. You could even get creative here and scan the points to produce your own adjustment values if you wanted to.

Hopefully one or more of these options may help you achieve your goal. Currently in LP360 we are lacking in our ability to process points by flightline (similar to how you can use class values to do so). These are fixes we hope to work on future generations of point access software.

Let us know if you would like to explore a custom solution.

Andrew