EPSG

EPSG guidance note #7.

2002-11-22

Applies to 2D and the horizontal component of 3D ellipsoidal systems.

In the formulas that follow, the coordinate strings are symbolically represented as follows: deg decimal degrees adeg absolute value of decimal degrees ideg integer degrees sdeg signed integer degree min real-number minutes imin integer minutes sec real-number seconds lathem, lonhem hemisphere abbreviation In this conversion the parameter values remain unchanged but are re-ordered. For the forward calculation from HDMS representation to DMSH representation, for each of latitude and longitude re-order the fields: from hem, ideg, imin, sec to ideg, imin, sec, hem For the reverse calculation from DMSH representation to HDMS representation, for each of latitude and longitude re-order the fields: from ideg, imin, sec, hem to hem, ideg, imin, sec