NAME:
	match_xmm
 PURPOSE:
       Compares each entry of xmm db with all entries of other xmm
       db and finds nearest other db  entry.
	Returns 4 arrays containing xmm no, matching other no
	and x and y distance of otherdb object to xmm object, as well as 3 
	arrays containing accurate great circle distance and x and y offset 
	of all otherdb objects within 28.5 arcsec of an xmm object.  
 CALLING SEQUENCE:
	match_xmm,xmmdb,otherdb[,xmmno,other_no,xoff,yoff,totd,totx,toty,$
		offmax=offmax,dmax=dmax,dmin=dmin]
 INPUTS:
	xmmdb:The xmm database to be searched. Must start with 'dbase/... '
	otherdb: The other  "    	"	"	"	"	"
 OPTIONAL INPUT KEYWORDS:
	offmax: STRING!!!!maximum offax angle of xmm objects to be matched. 
		If not set, all xmm objects are matched 
	dmax:	max distance for a match to be accepted (& included in xoff...)
		if not set, default is 30". In arcsec 
	dmin:	min distance for a match (use to make different set of matches:
		r<5", 5

(See /home/xmmssc/soft/idl/pro/match/match_xmm.pro)




 Suzanne Aigrain 
  
<visitor2@ast.cam.ac.uk>

Last modified: Thu Feb 15 12:42:01 2001