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What is projected coordinate system in ArcGIS?
A projected coordinate system is a planar system that uses two-dimensional coordinates and linear distance measurements as units. A projected coordinate system is based on a geographic coordinate system and a map projection.
Where is the coordinate system in ArcGIS?
Check the Coordinate System of the ArcMap Data Frame by navigating to View > Data Frame Properties and click the Coordinate System tab. Check the coordinate systems of each layer in the map individually by right-clicking on the name of the layer > Properties and click the Source tab.
Why is the coordinate system important in ArcGIS?
The coordinate system is one of the most important properties of your data frame. It determines the map projection for the map display in the data frame. The data frame’s coordinate system need not be the same as the data you are using, although if ArcMap has to project your data on the fly, it can take longer to draw.
How is a projected coordinate system based on a geographic coordinate system?
A projected coordinate system is based on a geographic coordinate system and a map projection. The map projection contains the mathematical calculations that convert the geodetic locations to the planar system. Vertical coordinate systems provide a reference for z-coordinates, which are measurements of the height or depth of features.
When do you create a feature class in ArcGIS?
Coordinate system. When you create a feature class, you have to choose, or possibly create, a coordinate system. The coordinate system, along with tolerance and resolution values, makes up a spatial reference of a feature class. A spatial reference describes where features are located in the real world.
How to specify a geographic system in ArcGIS?
To specify a geographic transformation for the data, click the Transformations button and select the desired transformation, or create a custom or compound transformation. Converting correctly between two geographic coordinate systems requires a geographic or datum transformation.