6.4.4 GET_HXT_POS

The routine GET_HXT_POS will return the HXT address of the flare location. It will perform the following checks in this order until it finds a match.

1. Read the $DIR_HXT_CAL/hxt_flare_pos.txt file to see if the time is in that list
2. Use the GOES heliocentric location to determine the address
3. Use an SXT image index to define the address
4. Pass in heliocentric coordinates and convert them
5. Ask for user to specify HXT address directly

Sample calls are:
IDL> xy0 = get_hxt_pos('15-Nov-91 22:37')
 
IDL> xy0 = get_hxt_pos(index(20), helio='N32W23')

IDL> xy0 = get_hxt_pos(index(20), status=status)
The optional keywords /get_sxt, /get_goes and helio will force the calculation of the function to use that technique. The keyword option /nouser should be used when running in batch mode as it will inhibit asking the user for input. The status output is a if no match has been found, 1 for HXT flare list, 2 for SXT image, 3 for GOES event list, 4 for heliocentric coordinate passed in, and 5 for user input.