/**
* Western Longitude
*
* @return Western Longitude
*/
public final float getWestLongitude() {
if (length > 75 && ((getType() == 4) || (getType() == 5))) {
return GribNumbers.int3(getOctet(74), getOctet(75), getOctet(76)) / 1000;
} else {
return GribNumbers.UNDEFINED;
}
}
/**
* Eastern Longitude
*
* @return Eastern Longitude
*/
public final float getEastLongitude() {
if (length > 72 && ((getType() == 4) || (getType() == 5))) {
return GribNumbers.int3(getOctet(71), getOctet(72), getOctet(73)) / 1000;
} else {
return GribNumbers.UNDEFINED;
}
}
/**
* Northern latitude
*
* @return Northern latitude
*/
public final float getNorthLatitude() {
if (length > 66 && ((getType() == 4) || (getType() == 5))) {
return GribNumbers.int3(getOctet(65), getOctet(66), getOctet(67)) / 1000;
} else {
return GribNumbers.UNDEFINED;
}
}
/**
* Southern latitude
*
* @return Southern latitude
*/
public final float getSouthLatitude() {
if (length > 69 && ((getType() == 4) || (getType() == 5))) {
return GribNumbers.int3(getOctet(68), getOctet(69), getOctet(70)) / 1000;
} else {
return GribNumbers.UNDEFINED;
}
}
/**
* Constructs Grib1PDSVariables from a byte[].
*
* @param input PDS
* @param cal use this calendar to set the date
* @throws java.io.IOException byte[] read
*/
public Grib1Pds(byte[] input, Calendar cal) throws IOException {
this.input = input;
this.length = GribNumbers.int3(getOctet(1), getOctet(2), getOctet(3));
this.level = new GribPDSLevel(getOctet(10), getOctet(11), getOctet(12));
// calculate the reference date
// octet 25
int century = getOctet(25) - 1;
if (century == -1) century = 20;
// octets 13-17 (base time for reference time)
int year = getOctet(13);
int month = getOctet(14);
int day = getOctet(15);
int hour = getOctet(16);
int minute = getOctet(17);
cal.clear();
cal.setTimeZone(java.util.TimeZone.getTimeZone("GMT"));
cal.set(Calendar.DST_OFFSET, 0);
cal.set((century * 100 + year), month - 1, day, hour, minute, 0);
refTime = cal.getTimeInMillis();
// calculate the valid date
int type = 1;
int factor = 1;
switch (getTimeUnit()) {
case 0:
type = Calendar.MINUTE;
break;
case 1:
type = Calendar.HOUR_OF_DAY;
break;
case 2:
type = Calendar.HOUR_OF_DAY;
factor = 24;
break;
case 3:
type = Calendar.MONTH;
break;
case 4:
type = Calendar.YEAR;
break;
case 5:
type = Calendar.YEAR;
factor = 10;
break;
case 6:
type = Calendar.YEAR;
factor = 30;
break;
case 7:
type = Calendar.YEAR;
factor = 100;
break;
case 10:
type = Calendar.HOUR_OF_DAY;
factor = 3;
break;
case 11:
type = Calendar.HOUR_OF_DAY;
factor = 6;
break;
case 12:
type = Calendar.HOUR_OF_DAY;
factor = 12;
break;
default:
throw new IllegalArgumentException("Unknown timeUnit= " + getTimeUnit());
}
cal.add(type, factor * getForecastTime());
validTime = cal.getTimeInMillis();
}