GeoCue’s repository of articles covering tools, tips, and workflows for processing point clouds in LP360 Geospatial.
In the standalone version of LP360, one may add raster files using the ‘Raster Tab’ of the ‘Add Files’ dialog. Then navigate to the desired Raster file(s). The following are the currently supported raster file formats: TIF (*.tif) JPEG (*.jpg) PNG (*.png) GIF (*.gif) BMP (*.bmp) MrSID (*.sid) JP2000 (*.jp2) ECW (*.ecw) IMG (*img) Binary…
LP360 includes tools to automatically extract a rail alignment (centerline) feature as a polyline as well as classify “top of rail” from LAS files derived from Laser Intensity Detection and Ranging (LIDAR) points. This feature is implemented as a semi-automated Point Cloud Task (PCT) and is available in the Advanced version of both LP360 for…
Symptom: Receive a message in the lower left corner of LP360 indicating that the “Draw operation failed for at least one layer (23021)”. Probable Resolution: At least one of the layers in your Table of Contents (TOC) is a WMS layer but your project layer has no Current Coordinate System (SRS) or an unknown Current Coordinate…
An important evaluation to make when performing a QAQC analysis of a LIDAR data set is a control point comparison. Typically, this refers to checking the vertical accuracy of a LIDAR data set. In regards to vertical check/control point location: “Unlike horizontal checkpoints, vertical checkpoints are not necessarily required to be clearly defined or readily…
Problem: If you have an older computer with older display drivers then you may notice that every time ArcMap refreshes a raster view, there is a noticeable ‘flash’ as the display updates. This ‘flashing’ can become quite annoying and slow down your processing. Probable Resolution: ArcMap does have a hardware acceleration option for supported layers. If…
This workflow is for reprojecting, shifting, or scaling in x, y, and/or z direction, for LAS data. This is useful for converting: Geographic Spatial Reference System (SRS) to Projected SRS and vice versa. Projected SRS to another Projected SRS Different measurement units: US survey feet, international feet and meters. Removing vertical bias from LAS data…
Problem: Receive either a “Classify is Complete” or a “ClassifyByGeometry function fails” with an overall message, or by feature messaging, indicating “Geometry not within read/write loaded point extent (10075)”. Probable Resolution: The warning message indicates that the LAS files intersecting with the indicated feature are not open for read/write, hence, no classification based on that…
We have lot of LP360 customers with a variety of disparate feature collection and editing needs. To begin to address these needs, we introduced a completely new set of Feature Edit tools in the 2016/2017 releases of LP360 (standalone). Last month I introduced the new Feature Analyst tool that will be available in LP360 2017.1…
Problem: When loading an orthophoto image into LP360/Topolyst no image is displayed, yet when you zoom in it becomes visible. Modifying the LP360 image display properties shows the image extents properly and the header checks out. Probable resolution: We suspect that the overviews in the image file are corrupt/invalid. One can use the GDAL tool to…
Sometimes it may be useful to “cookie-cut” LIDAR points by polygons. The polygons may represent rectangular grids, such as quarter quads, or can be irregularly shaped. Cookie-cut allows you to use a shape file of one or more polygons. An attribute from the Shape file can be used to name the various files. This is set…
