# What is a coordinate system in ArcMap?

## What is a coordinate system in ArcMap?

A coordinate system is a reference framework that defines the position of features in either two- or three-dimensional space. Coordinate systems can be horizontal, defining where features are across the globe, or vertical, defining how high or deep features are relative to a surface.

**What coordinate system should I use in Arcgis?**

Web Mercator is a common projected coordinate system designed for web mapping applications. Most of Esri’s basemaps are tiled in Web Mercator, so they can have the greatest compatibility.

**Where is coordinate system in ArcMap?**

Checking for a Coordinate System Right click on the title of your Map Layer in the Table of Contents of ArcMap. Choose Properties at the bottom of the pop up menu. Click on the Source tab. In the Data Source section, there should be a label that says Geographic Coordinate System or Projected Coordinate System.

### How do you set a coordinate system in Arcgis?

Create a coordinate system

- In the Contents pane, right-click a map or scene and click Properties.
- On the Map Properties dialog box, click the Coordinate Systems tab.
- Click the Add Coordinate System button and click New Geographic Coordinate System , New Projected Coordinate System , or New Vertical Coordinate System .

**What are the types of coordinate system?**

Data is defined in both horizontal and vertical coordinate systems. Horizontal coordinate systems locate data across the surface of the earth, and vertical coordinate systems locate the relative height or depth of data. Horizontal coordinate systems can be of three types: geographic, projected, or local.

**What are the types of coordinate systems?**

Common coordinate systems

- Number line.
- Cartesian coordinate system.
- Polar coordinate system.
- Cylindrical and spherical coordinate systems.
- Homogeneous coordinate system.
- Other commonly used systems.
- Relativistic coordinate systems.
- Citations.