LP360 Features Utility Tool

As many of you who are involved in LIDAR breakline collection know, we added some very nice feature edit tools to the Standard level of LP360 (Windows standalone version).  One of these tools, “Create Features from Selected Features” is a very handy utility tool.  Its basic function is to collect features you have selected with…

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Embankment Contour Generation

Problem: Contours don’t seem to represent the side of an embankment very well. In this situation, the horizontal position error is greater than the vertical error resulting in a surface that does not truly represent the embankment. If contours were to be generated then this would result in “spikey” or “jagged” lines that do not…

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Creating a 2D Feature with Elevation Attributes

With the release of LP360 v2017.1 we began recommending that users create their breaklines using LP360 instead of the previous recommendation of using the LP360 Sketch tool in LP360 for ArcGIS. One common question that has come up is how does one create a flat 2D feature and put the summarize Z results in the…

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LP360 and Topolyst Feature Analyst

Feature Analyst is an exciting new tool that will appear in LP360/Topolyst 2016.2.  To motivate this discussion, I will provide a synopsis of a few use cases for Feature Analyst here.  A detailed look at these cases is presented at the end of this article.  Examples of tests you will be able to perform with…

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Creating Island Breaklines in LP360

The following workflow and accompanying video describes the suggested workflow for digitizing breaklines around islands within LP360. Creating Island Breaklines: Workflow Configure a conflation task for the lake or main waterbody that the island resides within. Set up a conflation method for the conflation task This is dependent upon user specifications, the example in the video chooses…

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River Flattening in TerraModeler

Hydro-flattening is a common requirement when it comes to delivering surface models to the U.S. Geological Survey (USGS) National Elevation Dataset (NED). According to the USGS LIDAR Base Specification Version 1.2, a hydro-flattened surface refers to a specific kind of digital elevation model (DEM) that is required for inclusion in the NED. A hydrologically flattened…

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TerraModeler: Contour generation appears to not work

KBA-01040-J2X7B3 Problem The resulting contour design files are empty, or the contours are being generated as if there are no breaklines. Solution A couple of things to review: Verify that a classification routine, using a buffer and/or with closed shapes, to presumably the water or buffer class has been run on those laser points which…

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Breaklines, Part 5 – Enforce Varying Elevation

In the last edition of LP360 News, we discussed the creation of 3D breaklines for enforcing situations where the elevation must be a constant along the breakline. The most common example of this applications is “water body flattening” such as lakes and ponds. In this final installment of the breakline series, we will consider the…

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Breaklines, Part 4 – Enforce Constant Elevation

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…

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Breaklines, Part 2 – Contours

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…

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