Using drone (sUAS) collected photogrammetry which are then turned into a point cloud for assessment in LP360 Ignacio Zapico Alonso (Departamento de Geodinámica, UCM, e Instituto de Geociencias, CSIC-UCM), Anonio Molina Jurado (Universidad de Alcalá) and David Gutiérrez Torres (DGDrone) discuss Topographic monitoring at the restoration of the Somolinos quarry. The video is in Spanish with English…
A GeoCue user with administrator privileges has the ability to “publish” a new default window arrangement to be used by all users of GeoCue for the currently open environment. After opening a project in a specific environment, an administrator has the ability to re‐arrange windows, dock and turn off/on panes, and re-arrange and turn off/on toolbars. Once…
LP360 has several command line executable style programs that assist with productivity for different tasks, particularly when working with large amounts of data or repeating processes. One way of using these commands is by incorporating them into MS-DOS style batch scripts. Another is by configuring corresponding commands and checklist steps within the GeoCue workflow software…
When updated Geoid models are released by NGS, GeoCue is updated to reflect these changes. The previous geoids still exist within the program, they are however disabled. We do this because NGS states for example that, “When using the geoid models, please be advised that GEOID12B should supersede previous models GEOID12 and GEOID12A.” If there…
There may be times when a user needs to add a custom horizontal coordinate system to the program. This option can be done within GeoCue. Initial steps Generate a custom PRJ file to reflect the new custom coordinate system There are a couple of options how to accomplish this Copy a current PRJ file and…
While creating a new layer in a GeoCue project you may see a Missing Datum Transformation dialog appear. The missing datum transformation means that GeoCue does not have a predefined transformation path between the horizontal datum of the layer and the project’s horizontal datum, or the vertical datum’s defined horizontal datum. In most cases that we…
The elevation difference (dZ) tool will display, or generate images, based upon the settings that you select. For display those settings are located in the LAS properties -> Symbology -> Delta Z tab. The colors used by default usually indicate a good fit with green and a mismatch in red. Hence, open terrain areas generally…
The latest ASPRS Positional Accuracy Standards for Digital Geospatial Data shows the correlation between vertical RMSE and contour interval. The updated ASPRS standard uses accuracy based upon the RMSE (Root Mean Square Error) at the ground scale. The ASPRS Accuracy Standards for Large Scale Maps from 1990 used RMSE, however the difference comes in how the standards represent the accuracy…
The results of extracting the LAS header information from the Point Cloud Statistics Extractor or LDDump may contain EPSG, GeoTIFF or other codes for coordinate systems, datums, units, etc. For GeoTIFF tag or codes: http://geotiff.maptools.org/spec/geotiff6.html#6.3.1.3 In here you’ll find for example the codes used for Linear Units: Linear Unit Values (See the ESPG/POSC tables for…
The smooth corners contour option in LP360 is basically a choice between drawing contours as line strings or drawing them as curves. The Smooth Corner Vertex Spacing parameter is the number of vertices to be added between the existing vertices that are found where the contour crosses the triangle edge. Those vertices on the triangle…
