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====== Global Mapper Lat/Lon Config Tutorial ======

**Global mapper Latitude/Longitude config tutorial for ArmA 3 real world data terrains.**

Load global mapper project, drag a box around bottom left user created feature grid vertice.

RMB -> vertex editing -> set position of selected vertices.

Tick geographic coordinates (latitude/longitude).

Copy paste latitude and goto [[http://www.latlong.net/degrees-minutes-seconds-to-decimal-degrees|latlong.net]] website, paste values to latitude box. Repeat this for longitude.

Note that this websites longitude seconds input box only accepts integers (full numbers, no XX.XXXXX).

For some reason arma3 **latitude is with NEGATIVE number if its north of equator**.

Click convert to decimal degrees button and now you have two values. Copy paste lat to mapArea[] first line, shown below
<code cpp>
mapArea[] =
{
	-14.60974078, 42.84222222, // latitude here
	,  // longitude here
};
</code>

Back in global mapper drag a box around top right user created feature grid vertice, get the coordinates same as latitude.

Paste them to mapArea[] second line, shown below
<code cpp>
mapArea[] =
{
	-14.60974078, 42.84222222, // latitude here
	-15.35597344, 43.59888889 // longitude here
};
</code>

Next we get the center latitude longitude coordinate for the terrain, go back to global mapper, select the whole user created feature grid, RMB -> crop combine/split/split functions -> subdivide quadliteral area. Use grid number of rows and columns: 2, click OK. On modify feature info dialog click OK.

Drag a box around the vertice in center of your user created feature grid, get its coordinates same way we did above.

Paste values
<code cpp>
latitude = -14.98310431;
longitude = 43.21916667;
</code>

Finally grab the mapZone value from global mapper status bar (bottom) where it says like UTM 38N.
<code cpp>
mapZone = 38;
</code>
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