Synopsis
		sforientation < in.rsf > out.rsf weight=wgt.rsf azimuth=az.rsf rect1=0 rect2=0 rect3=0 order=2 interp= filt=

Parameters
		string azimuth= auxiliary output file name   string filt= filter type : ls, tls, tensor   string interp= interpolation method: maxflat lagrange bspline   int order=2 approximating order of finite difference   int rect1=0 smoothness on 1st axis   int rect2=0 smoothness on 2nd axis   int rect3=0 smoothness on 3rd axis   string weight= auxiliary input file name