LibGuides: Maps & Geospatial Data: Map Projections

Map Projection and Coordinate Systems

Projection basics for GIS professionals
Coordinate systems, also known as map projections, are arbitrary designations for spatial data. Their purpose is to provide a common basis for communication about a particular place or area on the earth's surface.
Working with Projections
Chapter of the QGIS User Guide explaining projection support and how to use projections.
Coordinate Reference Systems
Chapter from the QGIS Gentle Introduction to QGIS provides an introduction to map projections and coordinate reference systems (CRS).

Reference Tables

Supported Projected Coordinate Systems in ArcGIS
ArcGIS Desktop 10.8.2 Projected Coordinate System Tables. Use CTRL-F to find “Mongolia” map projections. This PDF is also available locally below.

ArcGIS Desktop 10.8.2 Projected Coordinate System Tables

Available Transformations, Methods, and Areas of Use in ArcGIS
ArcGIS Desktop 10.8.2 Geographic and Vertical Transformation Tables. Use CTRL-F to find “Mongolia” methods. This PDF is available locally below.

ArcGIS Desktop 10.8.2 Geographic and Vertical Transformation Tables

Eurasia on two-point equidistant projection. 15° graticule; two anchor points are (45°N, 40°E), (30°N, 110°E). Imagery is a derivative of NASA’s Blue Marble summer month composite with oceans lightened to enhance legibility and contrast. Image created with the Geocart map projection software. Strebe via Wikimedia Commons.