cdm/src/main/java/ucar/unidata/geoloc/projection/LatLonProjection.java
public float[][] projToLatLon(float[][] from, float[][] to) {

    float[] fromX = from[INDEX_X];
    float[] fromY = from[INDEX_Y];
    to[INDEX_LAT] = fromY;
    to[INDEX_LON] = fromX;
    return to;
  }
public float[][] projToLatLon(float[][] from, float[][] to) {

    float[] fromX = from[INDEX_X];
    float[] fromY = from[INDEX_Y];
    to[INDEX_LAT] = fromY;
    to[INDEX_LON] = fromX;
    return to;
  }
Convert projection coordinates to lat/lon coordinate.

@param from array of projection coordinates: from[2][n], where
(from[0][i], from[1][i]) is the (x, y) coordinate
of the ith point
@param to   resulting array of lat/lon coordinates: to[2][n] where
(to[0][i], to[1][i]) is the (lat, lon) coordinate of
the ith point
@return the "to" array