Posts

Showing posts with the label Mapping Software

044] How to Create Perpendicular Lines Along a Path in Global Mapper

Image
Automatically generate perpendicular cross-section lines along any selected path or boundary for precise site analysis. This tutorial covers the "Create Perpendicular Lines Spaced Along Selected Line/Area Feature(s)" tool in Global Mapper. You will learn how to set intervals and define perpendicular lengths, which is essential for professional road, river, and site cross-sectional studies. Today, we will explore the "Create Perpendicular Lines Spaced Along Selected Line/Area Feature(s)" tool, which draws perpendicular lines at regular intervals along a selected feature This feature is frequently used in drawings for cross-sectional analysis of business sites, roads, and rivers. Preparing the Line and Area Features First, draw an Area and a Line arbitrarily on the main screen. img 1 : Drawing Area and Line in Global Mapper After selecting both objects, Creating Perpendicular Lines Along S...

026] How to Use Spatial Predicates in Global Mapper for GIS Analysis

Image
Define topological relationships and filter vector data using spatial logic. This tutorial covers the Predicates tab within Global Mapper's Spatial Operations tool. You will learn how to use 11 different spatial relationship conditions—such as Intersects, Touches, and Within—to select or create data based on how layers interact geometrically. We also introduce the advanced DE-9IM "Relate" method for complex spatial queries. Today, in our second session on Spatial Operations , we will explore Predicates , which offer a more granular approach than the basic operations we discussed previously. Admittedly, there are some limitations. Because these operations usually work between only two layers at a time, managing complex multi-layer relationships can become challenging. Even so, most spatial analysis tasks can still be performed effectively using these methods. Loading Sample Layers for...

006] How to Create Buffer Zones in Global Mapper

Image
Understand distance-based proximity analysis by creating multi-ring Buffer Lines from point, line, or area features. This tutorial covers the essential workflow for performing Buffer Analysis in Global Mapper. You will learn how to prepare your workspace, load satellite imagery, digitize polygon features, and generate professional buffer zones with customized styling and transparency for clear spatial visualization. In this lesson, we will learn how to create multi-ring buffer zones for distance-based spatial analysis using polygon features in Global Mapper. ▲ Learn how to perform professional Buffer Analysis in Global Mapper! 1. Preparing the Workspace We will continue using the workspace from our previous session. First, let's clean up some unnecessary layers. Removing Unnecessary Layers img 1 : Selecting 'Line' and 'Viewshed Analysis' layers in the Control Center ...

005] How to Perform Viewshed Analysis in Global Mapper for 3D Visibility Studies

Image
Identify visible areas and calculate line-of-sight from specific viewpoints using terrain and vector data. This tutorial provides a comprehensive guide to performing Viewshed Analysis in Global Mapper. You will learn how to set up observation points, configure parameters such as observer height and view angles, and leverage Global Mapper's unique ability to include building vector data as obstructions without DEM conversion. What Is Viewshed Analysis in Global Mapper? Following our previous session, today we will dive into Viewshed Analysis in Global Mapper. Viewshed Analysis is commonly used to evaluate how a project or development affects visible areas within a landscape. It is an analytical process where you select key viewpoints and look toward the project site to compare the current status with the planned state to see how much the visibility changes. (In many real-world projects, analysts evaluate only the existing...