GeoCue Group’s repository of knowledge base articles and FAQs covering Terrasolid tools, tips and workflows.
This technical note explains how to launch an external application with a TerraScan project from GeoCue 2014 and later. In doing so one may provide a means to pass a TerraScan project to MicroStation Connect before the full support is implemented in GeoCue 2016. One may also use this command to pass a TerraScan project…
Geiger-mode lidar data is getting a lot of press lately as the “next big thing” in airborne data collection. Unlike traditional lidar sensors, which we will call “linear-mode lidar” for convenience, Geiger-mode sensors use a different detection method in the receiver – the “Geiger-Mode” part – to enable much higher data collection altitudes and higher…
In the LIDAR industry the generally accepted definition for Nominal Pulse Spacing (NPS) is the one detailed in the USGS base LIDAR Specification. That is the spacing between points in the collection when in reference to single instrument, single swath, first return only LIDAR point data. The NPS is a value that is usually predicted by…
Contours are polylines that are used to connect locations of equal value and show how values change across a surface model. Most of the time, elevation values are associated with contours, but any continuous data can be used, for instance: precipitation, pollution or even atmospheric pressure. When talking about contours it is not uncommon to…
In some cases hardware manufacturers and/or software are not properly setting the GPS Timestamps in an LAS file according to the LAS specification. That specification dictates that the timestamp for LIDAR points be stored in either weekseconds or Adjusted GPS Standard time. This is very important as the tools within TerraScan and other software expects the…
Quality control and quality assurance checks for LIDAR data continue to evolve as the industry identifies new ways to help ensure that data collections meet desired usage requirements. The U.S. Geological Survey (USGS) LIDAR Base Specification introduced a definition for spatial density distribution and regularity within LIDAR data. The requirement is that the spatial distribution…
Due to the fact that TerraMatch Corrections cannot be applied via TerraSlave, it is important to make sure that the macro has been assigned correctly when running via dispatch within GeoCue. Here are the steps to take when setting up the macro within GeoCue. ***Note: Best practice is to save the tms file in the…
