# MGLTileCoordinateSystem

    enum MGLTileCoordinateSystem {}

Tile coordinate systems that determine how tile coordinates in tile URLs are interpreted.

- `MGLTileCoordinateSystemXYZ`

  The origin is at the top-left (northwest), and `y` values increase southwards.

  This tile coordinate system is used by Mapbox and OpenStreetMap tile servers.

  #### Declaration

  Objective-C

      MGLTileCoordinateSystemXYZ = 0

  Swift

      case XYZ = 0

  View Source on GitHub
- `MGLTileCoordinateSystemTMS`

  The origin is at the bottom-left (southwest), and `y` values increase northwards.

  This tile coordinate system is used by tile servers that conform to the Tile Map Service Specification.

  #### Declaration

  Objective-C

      MGLTileCoordinateSystemTMS

  Swift

      case TMS = 1

  View Source on GitHub