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Showing posts with the label GIS Tips

049] How to Import WKT and XY Coordinate CSV Files in Global Mapper (Points, Lines, and Polygons)

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Overview of CSV-Based Geometry Import in Global Mapper Learn how to import points, lines, and polygons from CSV files using WKT and Coordinate List formats. While Shapefiles are standard, CSV files offer a lightweight and human-readable alternative for storing GIS data. This tutorial demonstrates how to correctly configure Global Mapper to interpret text-based geometry definitions (WKT) and consecutive coordinate lists, ensuring your data is accurately positioned on the map. Recommended Audience: GIS Analysts, Data Preprocessors, and Global Mapper users managing non-standard data formats. Previously, we covered how to import points using CSV files. Today, we will explore how to import more complex geometries—points, lines, and polygons (areas)—stored within a CSV file. You might wonder why anyone would store line or polygon data in a CSV file when the SHP format is so well-supported. There are several good...

054] How to Export Selected Layers and Specific Areas in Global Mapper

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Learn how to export only the layers and map areas you actually need. This tutorial covers the essential process of selective data export in Global Mapper. You will learn how to export the entire workspace, isolate specific layers from the Control Center, and use polygon features to crop exports to precise geographic areas for both raster and vector formats. Understanding Export Workflows in Global Mapper Global Mapper is perhaps one of the most versatile GIS tools when it comes to the sheer number of formats it can import and export. Because of this, many users utilize it as a conversion and editing stage before moving data to their final production tools. Let’s walk through the process step by step. First, please download the file below. It is a digital map containing building information. Cur_BD_2.zip (Verified and safe file for Global Mapper.) img 1 : Bandizip window showing the building footprint d...

[052] How to Use Formula Calculation in Global Mapper Attribute Setup

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Automating attribute transformation using mathematical and string functions to prepare data for 3D modeling. This tutorial explains how to use the "Use Formula Calculation" feature within Global Mapper's Attribute Calculation Setup. We focus on a real-world scenario where elevation data is trapped inside a text string (e.g., "FH:118") and must be extracted and converted into a numeric attribute for accurate 3D simulations. Why Attribute Transformation Matters in 3D Simulation For 3D simulations, you need to create 3D data by applying a planned elevation to each parcel. However, in actual CAD drawings you receive, the parcels and the planned elevations are often placed on separate layers. Of course, if there are only one or two, you could manually enter the elevation value for each parcel, but if there are hundreds of parcels, the story changes. Take a look at the data below. img 1 : Global...

031] How to Print and Export Maps in Global Mapper | File Print & Print Preview

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Learn how to quickly export your GIS analysis as a physical print or an image file using the standard File menu. Once you have completed your work in Global Mapper, the next step is to either print it for a report or save it as an image. This tutorial covers the primary settings within the basic File - Print menu, including resolution impacts and print bounds configuration. Once you have completed your work in Global Mapper, the next step is to either print it for a report or save it as an image. This is a crucial step in communicating your GIS analysis results. Understanding Global Mapper Print Options There are two primary methods for outputting your work in Global Mapper: File - Print: Using the standard Print menu (Note: This method is generally less recommended because the size of vector elements and legends changes based on the output resolution). Map Layout Editor: Adjusting the layout professional...

[022] How to Split Vector Layers by Attribute in Global Mapper

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Effortlessly organize complex vector data into manageable sub-layers based on specific attribute values. This tutorial explores the "Split into Separate Layers" function in Global Mapper, demonstrating how to categorize data by name, geometry type, or custom attributes to streamline your GIS workflow. What Is the Split Tool in Global Mapper? Today, we will explore one of the most frequently used functions in Global Mapper: the Split tool.  This feature allows you to separate elements within a single layer into multiple distinct layers based on specific criteria. It is highly versatile and can be used with any vector layer or mixed vector layers containing various geometry types. img 1 : Global Mapper Control Center and Point Features on Screen First, let's open the file we worked on in the previous session. Looking at the Control Center, you can see various layers including points, lines, are...