Synopsis
		sfpseudodepth < Fin.rsf tau=Ftau.rsf > Fout.rsf inv=n linear=y n= o=0. d=

z to tau : pseudodepth < FZ.rsf inv=n tau=tau.rsf n=ntau o=otau d=dtau > FT.rsf
tau to z : pseudodepth < FT.rsf inv=y tau=tau.rsf > FZ.rsf

Parameters
		float d= tau d (>0)   bool inv=n [y/n] if y, tau to z; if n, tau to z   bool linear=y [y/n] if y, linear spline; if n, cubic spline (buggy)   int n= tau n   float o=0. tau o   file tau= auxiliary input file name

Used In
		SWAG          tau/arte tau/hess tau/iso tau/lens tau/linear tau/marm tau/vertical