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Nancy Graham has written 27 articles

GeoCue Knowledge Base Ready for Use

The GeoCue Group Knowledge Base is a one stop shop for information and support for all GeoCue Group products (Figure 1). Product information is available for AirGon, GeoCue, LP360 and Terrasolid. This searchable site makes finding information easy and fast. Search for product specific workflows, installation and licensing information, case studies or investigate the Frequently…

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Case Study – Identifying Building Heights over 32 ft for the City of Franklin Fire Department

Challenge Use LIDAR data to identify building heights over 32 ft (3 stories) for the City of Franklin Fire Department to maintain a building database with elevation information. Solution The Franklin Fire Department asked if our GIS department could identify all of the buildings within the city limits that were over 32ft or 3 stories…

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The No Point option is gone! Why?

With the latest release of LP360 (2014.1) the No Points option is no longer a selection in the LIDAR Layer Draw Tools legend. A no points display is now accomplished by simply toggling the Display Legend button on or off (Figure 1). This is also the case for the 3D View, The Profile View, and…

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Why Direction Matters when Digitizing Polygons in LP360

When drawing polygons it definitely matters if they are drawn clockwise or counterclockwise. Why you ask? Well, because polygons have a “sense” of direction. The right hand side of the vector used to draw a polygon is considered to be the “inside.” If you draw your polygon clockwise the right-hand side of the vector becomes…

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Display by Point Source in LP360

Have you ever clicked on the Display by Point Source button and only gotten a single source display when you know that there are multiple source points (usually flight lines) in your data? Remember that to display your source points you must first add them to your project by using the Symbology /Point Source tab…

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Shortcut Functions for Contour and Intensity Settings

With the newest release of LP360 (2014.1) we added shortcut functions for the Contour and Intensity buttons. Now, to easily get to the symbology adjustments for these features you can simply click the Contour or Intensity button while holding down the Ctrl key. These two buttons are located on the LP360 Toolbar. Prior to this…

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Bluff Profile Analysis along Lake Michigan

Challenge Much of the Lake Michigan shoreline in Wisconsin has a coastal bluff varying in height from less than 20 feet to over 140 feet. These bluffs erode in a number of ways and at varying rates (Figure 1). Over 175 profiles of these bluffs were measured and analyzed for slope stability in the mid-1970s…

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Case Study: Southwest Florida Water Management District

Challenge Hernando County Florida needed to create a 3-D model of the City of Brooksville and turned to the Southwest Florida Water Management District (SWFWMD) office for help in getting the estimated building heights. Solution Because of LIDAR’s 3-dimensional qualities it is the perfect data source to extract building elevation information. This point cloud characteristic…

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Automatic Building Extraction using LP360

Last month’s tool tip discussed using the Planar Point Filter to filter buildings from point cloud data. This month’s tool tip discusses building extraction, essentially the next step after creating a building filter. The Point Group Tracing and Squaring Point Cloud Task will allow you to further refine the point cloud data classified as building…

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Automatic Building Classification

So you have received LIDAR data and you really need to classify all those buildings in a timely fashion. The LP360 Planar Point Filter is an automatic process for classifying planar surfaces such as buildings. Located in the Point Cloud Task tab of the Table of Contents window of LP360, you can quickly set up…

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