ARMY TM 9-6675-349-12&P
MARINE CORPS TM 11039A-12&P
(f) Click on the hemisphere button for the west map area boundary, "E" for eastern hemisphere or
"W" for western hemisphere (default).
(g) Enter the longitude of the east map area boundary in decimal degrees. Allowable entries are 0 to
180 degrees.
(h) Click on the hemisphere button for the east map area boundary, "E" for eastern hemisphere or
"W" for western hemisphere (default).
NOTE
The Finish button will become enabled when all required fields have entries and
at least one data block is checked.
(12) Verify that all entries are correct. Correct any incorrect entries.
(13) Click on the Finish button to initiate map preparation.
(14) A progress bar and messages will be displayed during map preparation.
(15) A message will be displayed in the Message Area when a map file has been successfully created.
(16) A pop-up message will be displayed if an error was encountered. Click on OK to acknowledge the
message and take the appropriate corrective action.
(17) After map files have been created, you can create new maps by changing one or more of the other
input parameters and then clicking on the Finish button.
(18) Click on the Close button to exit IPADS Map Maker and return to IPADS Map Manager.
d. Map names. The latitude and longitude of the southwest corner and the map scale are embedded in the
map name. Map names generated by IPADS Map Manager have the form P_OLat_OLon_IS where:
P is the operator entered map name prefix.
OLat is the offset latitude of the southern map boundary.
OLon is the offset longitude of the western boundary.
IS is the inverse map scale.
(1) To decode the latitude of the southern map boundary:
(a) Divide the offset latitude by 10.
(b) Subtract 90. The result is the latitude in decimal degrees. Latitude is negative in the Southern
Hemisphere.
(2) To decode the longitude of the western map boundary:
(a) Divide the offset longitude by 10.
(b) Subtract 180. The result is the longitude in decimal degrees. Longitude is negative in the Western
Hemisphere.
(3) To decode the map scale, place "1:" before the inverse scale.
(4) For example, a map name of VA_1262_0939_250K translates to:
VA is the map name prefix assigned by the operator.
Latitude = 1262 / 10 90 = 36.2 degrees
Longitude = 0939 / 10 180 = -86.1 degrees
Map scale = 1:250K
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