Changes

The function uses an explicit matrix that contains relaxation, exchange and chemical shift terms. It does the 180deg 180 deg pulses in the CPMG train with conjugate complex matrices. The approach of Bloch-McConnell can be found in chapter 3.1 of Palmer, A. G. 2004 I{''Chem. Rev.}'', B{'''104}''', 3623-3640. This function was written, initially in MATLAB, in 2010.

The code was submitted at U{on this [http://thread.gmane.org/gmane.science.nmr.relax.devel/4132} mailing list thread] by Paul Schanda.