Global Mapper enhances its functionality with the capability to execute various tasks through scripting. Scripts, formatted as simple ASCII text files, are particularly useful for automating repetitive or routine tasks, thereby bypassing the need for manual data processing. The scripting language in Global Mapper is versatile, supporting a wide range of operations including importing, converting, reprojecting, analyzing, attribute calculation, layer splitting, interactive prompts for file and folder selection, and exporting in all supported data formats.
To further optimise data processing workflows, Global Mapper features a batch processing tool. This tool enables users to process multiple selected files or all compatible files within a given folder simultaneously. Operations such as conversion, re-projection, gridding, and renaming can be performed efficiently without the need to display the data in the software’s various viewers. This functionality significantly streamlines the handling of large datasets or complex processing tasks.
The software’s terrain data capabilities extend to various analysis tools that generate new vector feature layers, highlighting patterns or specific values within the terrain data. Users can create 3D contour lines in vector format from any imported or processed elevation layer. Contour analysis features include customisable interval spacing, polygon feature generation, and the identification of peaks and depressions in the terrain. Watershed delineation is another key feature, predicting the path of streams and their drainage areas. Building on the line-of-sight analysis from the profile view, view-shed calculations determine visible and hidden terrain areas from a specified point, considering factors like Fresnel Zone, signal strength loss over distance, and potential obstructions from 3D vector features.
Integrating vector features with terrain data in Global Mapper unlocks further analytical capabilities and data creation options. These include cut-and-fill volume calculations for both polygon and linear features, creating flattened site plans, and generating Relative Elevation Models (REMs). Cut and fill calculations can be applied to 2D or 3D vector polygons or along lines, simulating trench digging or creating flat terrain areas that blend seamlessly with the surroundings, ideal for simulating building sites. The REM feature is particularly useful for highlighting subtle terrain variations in a specific area, aiding in the visualisation of minor terrain changes that might otherwise go unnoticed.