This simple visualization tool provides the means to gauge the impact of a rise in water level in the area surrounding a body of water. This modified terrain modeling capability is particularly useful for visualizing construction sites or road cuts. This represents the elevation value at which the cut and fill volumes will be the same.Īn elevation or z-value assigned to an area feature can be used to create an artificial horizontal plane in the terrain. An optional feature allows the calculation of the break-even height within an area. Cut and fill calculations can be performed on area features or along a line to simulate the digging of a trench. This powerful tool is used to precisely calculate the volume of material that must be cut and/or filled to flatten the terrain at a specified elevation. The contouring tool can also be used to identify local peaks and depressions in a terrain layer. Options include customized contour interval spacing and polygon feature generation for determining the area above or below a specified height. This tool can also be used to conduct water drop analysis, in which the theoretical flow pattern from a defined source can be mapped.Īny imported or processed elevation layer can be used to generate contours in vector format. Advanced options include Fresnel Zone determination and signal strength loss over distance.īased on the terrain morphology, the watershed calculation tool determines the likely linear path of streams and the drainage or catchment areas of those streams. The viewshed analysis determines the coverage in all directions within a specified radius from the signal source. Similar to the line of sight calculation, the viewshed analysis tool is typically used to determine the area covered, or not covered, from a broadcast site with a specified transmitter height. A visualization option allows the Path Profile display to be rendered as a terrain cutaway in the 3D View. This is especially useful for the analysis of a radio or broadcast signal. Additionally, line of sight calculation can be used to visualize any obstructions that may interfere with the view along the profile path. These profiles can be used to calculate a variety of statistics related to the elevation and slope along the path. These functions are included as part of the standard installation and require no additional extensions or plug-in components.Īny line feature on the map can be profiled to create a cross-sectional view of the underlying terrain. Global Mapper includes several powerful terrain analysis tools that are used to process or model elevation data. If you are interested or in need of OTF support, please contact additional information. This terrain is acted upon by other environmental services to provide information to the simulation models to help them determine movement ability, speed, acquisition, and other capabilities needed to support the simulation activities and requirements.
The OTF integrates features and elevations into a single-layered, polygon-based representation using Irregular Triangulated Integrated Network (ITIN). OTF data can be created via GOTS (Government off-the-shelf) and COTS (Commercial off-the-shelf) toolsets and from traditional GIS datasets, as supported within the toolsets. This file format contains four types of files, a database header file (.dhf), an OTF file (.otf), three network database files (.nw), and a single elevation map file (elevation_map).
The Objective Terrain Format (OTF) is the runtime representation of the synthetic natural environment (SNE) for the US Army’s One Semi-Automated Forces (OneSAF) simulation software. Global Mapper’s OTF Reader Module is used by military personnel for mapping simulation exercises.
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