GeoCue Group’s reference library articles covering a wide variety of geospatial topics related to our various product lines.
ASPRS Approves Edition 2, Version 2 of the ASPRS Positional Accuracy Standards for Digital Geospatial Data (2024) Baton Rouge, LA June 28, 2024: The American Society for Photogrammetry and Remote Sensing (ASPRS) is pleased to announce adoption of the Positional Accuracy Standards for Geospatial Data, Edition 2, Version 2 (2024), which includes important modifications and additions…
Abstract In late 2009, a $14.3 million allocation from the “American Recovery and Reinvestment Act” for new light detection and ranging (LIDAR) elevation data prompted the U.S. Geological Survey (USGS) National Geospatial Program (NGP) to develop a common base specification for all LIDAR data acquired for The National Map. Released as a draft in 2010…
Trying to connect to the GeoCue FTP site in FileZilla or another FTP program results in the error, “550 No Connections Allowed for Your IP”. The GeoCue FTP has a security protocol to automatically ban an IP address for a period of 48 hours if there have been more than ten failed login attempts from…
A common practice amongst GeoCue customers (and internally) is to use previously established control points to compare with an sUAS produced point cloud to gather absolute accuracy statistics. The vertical mean error from these statistics is often used to “Debias” a dataset. This is simply shifting the point cloud data to match the measured control…
LASer (LAS) File Format Exchange Activities What is the LAS Format? The LAS file format is a public file format for the interchange of 3-dimensional point cloud data data between data users. Although developed primarily for exchange of LIDAR point cloud data, this format supports the exchange of any 3-dimensional x,y,z tuplet. This binary file format…
After updating/upgrading a program, double-clicking the shortcut fails to open and gives this dialog shown in figure 1, stating, Problem with Shortcut: The parameter is incorrect.”. What is the target (right click the shortcut > properties) for the shortcut? This can also be found going to “Open File Location” in the context menu. You can…
Introduction to Part 3: In the last part of this series, we discussed in some detail how a Triangulated Irregular Network (TIN) can be constrained by features external to the point cloud model such as lines, points and polygons. In this month’s edition, we will look at contours and how LP360 can extract elevation information…
This article is a continuation of the discussion of breaklines in LP360 (the standalone version). In last month’s installment, we discussed the overall concept of data modeling, especially the Triangulated Irregular Network (TIN). In this installment, I will discuss the general concept of adding constraints in the form of breaklines to these models. In future…
Prolog: I am writing a new whitepaper on model constraints in LP360 (any reference to LP360 where I do not add the term “for ArcGIS,” I am talking about the standalone version. This document is extracted and heavily revised from a series of articles that I wrote for the GeoCue Group Newsletter in 2013. The…
