An example of a tile layout is shown below. In this example, the tiles are named according to the lower left coordinates i.e. X_Y, where X = x coordinate divided by 1000 and Y = y coordinate divided by 1000; and a tile has a width of 2000 meters and a height of 2000 meters.

Global Mapper can be used to create the grid tile layout from a region of interest polygon.

- Start
**Global Mapper**. Load and display the region of interest polygon. - Press
**ALT+C**to display the**Overlay Control Center**. - In the
**Overlay Control Center**, select the region of interest layer. Click**Metadata**.*The Metadata dialog box appears*. - Take note of the UPPER LEFT X, UPPER LEFT Y, LOWER RIGHT X, and LOWER RIGHT Y attributes.
- Since the UPPER LEFT X value is 305458, an appropriate grid origin x value would be
**305000**, i.e. a round down. - Since the UPPER LEFT Y value is 2119255, an appropriate grid origin y value would be
**2120000**, i.e. a round up. - Since the difference between the LOWER RIGHT X and UPPER LEFT X is 55326 (360784 - 305458), then an appropriate number of grid columns would be
**28**, i.e. 55326/2000 where 2000 is the grid width. - Since the difference between the UPPER LEFT Y and LOWER RIGHT Y is 41187 (2119255 - 2078068), then an appropriate number of grid rows would be
**21**, i.e. 41187/2000 where 2000 is the grid height. - Close the
**Metadata**dialog box. - Select
**ALT+D**. Click the**Create Regular Grid of Features**icon.*The status bar shows the message "Left Click to Select Grid Anchor Point, ..."*. - Click a point anywhere inside the map window.
*The Grid Setup dialog box appears*. - In the
**Number of Grid Rows**field, type in 21. - In the N
**umber of Grid Columns**field, type in 28. - In the
**Grid Cell Width**field, type in 2000 meters. - In the
**Grid Cell Height**field, type in 2000 meters. - Click
**Anchor Point**.*The Select Location dialog box appears*. - In the
**X Coordinate**field, type in 305000. - In the
**Y Coordinate**field, type in 2120000. - Click
**OK**. - Toggle on
**Separate Row/Column Letters or Numbers**. Toggle on**Numbers**. - In the
**Rows Start**field, type in 2120. In the**Rows Step**field, type in -2. - In the
**Columns Start**field, type in 305. In the**Columns Step**field, type in 2. - Toggle on R
**everse Naming**,**Prepend 0**, and**Separate Rows and Columns with Underscore**. - Click
**OK**.*The grid tile layout is created*.