GeoCue Group’s reference library articles covering a wide variety of geospatial topics related to our various product lines.
In the last edition of LP360 News, we discussed the creation of 3D breaklines. Recall that, for our purposes, a 3D breakline is a vector that has an elevation value (Z) associated with each vertex. Generally, 3D breaklines can be divided into two categories – those with the same elevation for each vertex (used for…
As we have discussed in the last two issues of LP360 News, breaklines are two- or three-dimensional graphic data (points, lines, polygons) that we introduce into an elevation model to alter the topology. When working with Geographical Information System (GIS) models, we nearly always model complex, irregular elevation data as a Triangulated Irregular Network (TIN).…
In the previous issue of LP360 News, I introduced the use of Triangulated Irregular Networks (TIN) for modeling point derived elevation data as well as the basic concepts of “soft” breaklines. I realized when writing that first article that it is probably a useful exercise to review contours. Thus this part II article will be…
See the 2018 updated version of this article here. One of the more powerful capabilities within LP360 is breakline capture and enforcement. In fact, many LIDAR production shops use LP360 as their tool of choice for supplementing point cloud data (derived from LIDAR or correlated imagery) with breaklines. But what are breaklines and how should…
As with any data, breaklines should undergo a QA/QC process. For breaklines this should entail a check for potential topology errors as well as incorrect elevation values. Since breaklines are used to define and control surface behavior in terms of smoothness and continuity they may have a significant effect when incorporated in a surface model.
This technical note provides recommended flight planning procedures and suggestions for contractual data deliverables for organizations that are subcontracting field data collection for a LIDAR project to a service provider. It is intended to provide a common basis for project planning when working with subcontractors, as well as recommendations for setting-up calibration flights for those…
Purpose: This technical note is a companion to the briefing note “Command Dispatch System in GeoCue Enterprise”, which describes GeoCue’s Command Dispatch System in detail and includes technical information on the architecture and implementation of distributed processing functions within GeoCue. The purpose of this companion note is to discuss how distributed processing can be deployed…
