Скачать или смотреть Coordinate Systems in ArcGIS | WGS84 vs Kandawala vs SLD99 (Sri Lanka GIS Lecture) English Version

00:00 Introduction & Overview
00:26 Defining Coordinate Systems
00:45 Theoretical Framework
01:15 Categorizing Systems (GCS vs. PCS)
01:34 Deep Dive: WGS-1984 Global Standard
02:39 Regional Datums: Kandawala
03:27 Regional Datums: SLD-99
04:41 Practical Importance in GIS
05:17 Summary & Final Thoughts

Understanding coordinate systems is fundamental for accurate GIS mapping and spatial analysis.

In this lecture, we explain the coordinate systems used in ArcGIS with special reference to Sri Lanka, focusing on both global and national reference systems commonly used in GIS projects.

📌 Topics Covered in This Lecture:

• Introduction to Coordinate Systems in GIS
• Geographic vs Projected Coordinate Systems
• WGS 1984 (EPSG:4326) – Global GPS-Based Coordinate System
• Kandawala Datum (EPSG:5234) – Legacy Sri Lanka Grid System
• SLD99 (EPSG:5235) – Official National Datum of Sri Lanka
• Comparison of WGS 1984, Kandawala, and SLD99
• Importance of datum consistency in GIS analysis

🎯 Who Should Watch This Video:

✔ GIS and Remote Sensing students
✔ Surveying and drafting students
✔ ArcGIS beginners
✔ GIS professionals working with Sri Lankan data

Selecting the correct coordinate system is essential for producing accurate maps, reliable measurements and correct spatial analysis.

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