Conflation

A Conflation Task defines a set of procedures for digitizing features that extract elevations from a LIDAR surface. A conflation task can be configured to digitize points, polylines, and/or polygon features. The Conflation Method assigned to the conflation task defines how elevations are populated onto the geometry for each feature. LP360 Default Conflation Tasks Summarize Z…

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Detect Wires for Large Projects

TerraScan’s Detect Wires routine runs on points that are loaded within TerraScan. This works well if the project area is small but it can become more complicated when trying to run the routine over a larger area. The following are just some of the options available when it comes to running the detect wires routine over…

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Create Blocks Along Tower String

Create along tower string command creates block boundaries along a tower string element. Any linear element can serve as a tower string for this command. The block length is measured along the tower string but a block boundary is drawn at the location of the vertex that is closest within the given block length. The…

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TerraScan Detect Wires

Detect Wires tool is used to vectorize wires and classify points on wires of a powerline. It draws line string elements in the design file for all detected wires. The tool runs on points loaded into TerraScan. The tool searches points along a catenary curve. Catenary curves are mathematical descriptions of wires that are connected…

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Exported LAS files have coordinate resolution fluff

LP360 always uses a scale of 0.001 when exporting LAS files so as never to degrade the precision of the data. There is no user option like there is in TerraScan or GeoCue to specify the desired resolution and the mechanism that allows LP360 to load “unlimited” LIDAR prevents it from knowing the precision of all of…

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“No license” in LP360 for ArcGIS extension

Symptom In the ArcGIS extension dialog the LP360 extension is checked, but says “no license”. The LP360 toolbar indicates the extension is not licensed either as the red plus symbol is not activated. Checking LP360 License Administrator shows a licenses is available. Probable Resolution Try toggling the LP360 extension on/off and that should then check…

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Error 6: EPSG PCS/GCS code not found in EPSG Support Files

Symptom: While running the Point Cloud Statistics Extractor Point Cloud Task it returns “Error 6: EPSG PCS/GCS code 37518 not found in EPSG Support Files. Is this a valid EPSG coordinate system?“. The error message indicates that one or more input LAS files has been assigned an EPSG code that is not a valid code.…

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OpenGL Troubleshooting Guide for LP360 2016 and Topolyst 2016

Versions of OpenGL Supported in LP360 and Topolyst 2016: Previous versions of LP360 supported OpenGL 1.0 only.  OpenGL 1.0 was released on Windows in 1994. Both the LP360 standalone and Topolyst products now support two versions of OpenGL, OpenGL 4.4, or better if available, and OpenGL 1.1 are supported for these two products.   The LP360 for…

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Modifying VERT_CS WKT for USGS

A recent USGS addendum to the LIDAR Base Specification has stated that “User-defined entities will not be allowed for capturing specific geoid information in the WKT”. LP360 (v2015.1.76.15 or later) In order to remove this information from the VERT_CS WKT being included in LP360 generated WKTs it is necessary to replace the following file: “C:\Program…

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