cdm/src/main/java/ucar/atd/dorade/DoradeSWIB.java
public float[] getLongitudes() {
    if (myASIBs == null)
      return null;
    float[] lons = new float[nRays];
    for (int i = 0; i < nRays; i++)
      lons[i] = myASIBs[i].getLongitude();
    return lons;
  }
public float[] getLongitudes() {
    if (myASIBs == null)
      return null;
    float[] lons = new float[nRays];
    for (int i = 0; i < nRays; i++)
      lons[i] = myASIBs[i].getLongitude();
    return lons;
  }
Get the array of per-ray longitudes.  If we do not have per-ray position
information, null is returned.

@return an array of per-ray longitudes, or null if no per-ray position
information is available.