Retrieves SAC files from station & date info.

This function returns a vector of SAC file names

This function returns a vector of SAC file names given information of the SAC file. The input format relies on the PASSCAL/IRIS file format, which is of the form:

STACODE.*.*.CHAN.YYYY.*JJJ.*SAC

The file names must include a 3-space Julian day and year in the file name, as well as a year.

USAGE
[Seis] = getSacFiles('STATION','CHAN',date1,date2);
[Seis] = getSacFiles('SAC','CHAN',date1,date2);
[Seis] = getSacFiles('SAC','SAC',date1,date2);
[Seis] = getSacFiles('STATION','CHAN',hour1,hour2,day,year);
[Seis] = getSacFiles('STATION','SAC',hour1,hour2,day,year);
[Seis] = getSacFiles('SAC','SAC',hour1,hour2,day,year);