GeoCue’s repository of articles covering tools, tips, and workflows for processing point clouds in LP360 Geospatial.
When generating contours from a gridded point cloud, issues can arise in the resulting contours. This can cause horizontal offsets between lines from separate processing blocks resulting in contour lines that are split into multiple segments. Usually, the “Use Fast TIN” option is checked in the Las Properties dialog. The default value. This option uses…
LP360 can be inefficient when working with very dense point clouds, such as Dense Image Matching, for ground classification if appropriate steps are not taken in the workflow. In fact, be aware that it simply crashes if you have to use a large seed size (e.g. 200 feet on some machines) that requires more points…
The Export Wizard can be used to compare the relative accuracy of returns from overlapping flight lines. Using the ‘Surface’ Export Type, the ‘Point Insertion’ Surface Method , and the ‘dz Images’ Surface Attribute, will produce a useful visual representation of the vertical mismatch from flight line to flight line. This tool creates cells with…
Files with a zLAS extension are usually the ESRI proprietary LAS compression format. The ESRI LAS Optimizer improves archiving, sharing, and use of LAS format LIDAR. Optimization is accomplished in several ways: Lossless compression Spatial indexing Statistics generation The compression ratio the optimizer can achieve is typically much better than generic compressors. This is because…
Beginning with version 2017.1 of LP360, users have the capability to edit the attributes (Add fields and values) of shapefiles. In LP360, fields are added/removed via the Schema Editor and values modified using Feature Analyst: The Schema editor is used to manage the fields of the shapefile, hence it is used to add/remove fields: A…
Classify by Features is a useful way of assigning classifications to points using a spatial relationship to other features. Any vector layer that exists in the Map can be used to classify points that are either within a specified distance of polygon, linear, or point features or any points completely within a polygon feature. 1.…
When attempting to use the LDMerge.exe it fails with “Error: Failed to find an input LAS file (27274)”. This error is caused by the failure to specify the input files on the command line. The usage indicates this requirement to specify the input files by the “las_files” designation, but it is easily missed by users.…
Introduction In many cases there are not many LIDAR returns from the surface of waterbodies, and sometimes none at all. In some situations, it is useful to have points that can represent the surface of these waterbodies. LP360 can be used to generate points for these areas and mark them as synthetic points. Methodology Generate…
We have added a new monochromatic display mode in LP360 as well as rearranged the hillshade options to a more logical arrangement. A monochromatic display is just what it implies – a solid, single color display of all points regardless of attributes such as class or return number. This mode of display is ideal for…
