% @(#)fit_posi.hlq	19.1 (ESO-IPG) 02/25/03 13:30:32 
\se
SECTION./POSI
\es\co
FIT/POSINC                                                   09-Feb-1988 PJG
\oc\su
FIT/POSINC infram orient rin,rout,rstep region
	fit the position angle and inclination to 2nd and 4th harmonic
\us\pu
Purpose:    Fit the position angle and inclination to 2nd and 4th harmonic
\up\sy
Syntax:     FIT/POSINC infram orient rin,rout,rstep region
\ys\pa
            infram = input frame
\ap\pa
            orient = center of galaxy in x, center of galaxy in y,
                     position angle, inclination. The center of the galaxy
                     should be given in pixel units.
\ap\pa
            rin,rout,rstep = inner radius, outer radius, step in radius.
                     Input is assumed to be in pixel units.
\ap\pa
            region = enter for the position angle and inclination where 
                     the fit has to be done
\ap\no
Note:       The fit is done within the region given such that the phases
            of the 2nd and 4th harmonic have the minimum sigma.
\on\exs
Examples:
\ex
            FIT/POSINC myframe 100,100,32,20 20,60,10 10,20
\xe\sxe
