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Shub N… Oussam… Clark …

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How to achieve professional-grade accuracy in infrastructure mapping by mastering QGIS advanced digitizing. Learn the technical mechanics of CAD tools and buffers for curved tunnel polygons. This guide ensures your modeling approach is precise, helping you avoid common errors in complex geospatial and research data projects across all applications.

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BondiJones

BondiJones

Apr 26, 2026

If your "tunnel" needs to follow a specific centerline, the most accurate way to ensure a uniform width is to create a curved line first and then Buffer it.