# Stitch.m

Stitching function for bidirectionally propagated 3D experiments. Syntax:

 fid=stitch(spin_system,L,rho_stack,coil_stack,mtp_oper,mtp_time,t1,t2,t3)


Parameters:

            L - spin system Liouvillian

rho_stack - state vector stack from the forward part of
the simulation

   coil_stack - coil vector stack from the backward part of
the sumulation

     mtp_oper - operator for the pulse to be executed in the
middle of the t2 period

     mtp_time - duration for the pulse to be executed in the
middle of the t2 period

    t1.nsteps - number of time steps in t1

    t2.nsteps - number of time steps in t2

    t3.nsteps - number of time steps in t3


The function returns the three-dimensional free induction decay.