[gmx-users] How to calculate chemical shift?

[Xianwei Wang]

 Dear gmx users:
     I would like to calculate chemical shift using g_chi ,but the result has only :
 *** Chemical shifts from the chemical shift index ***

++++ PLEASE READ AND CITE THE FOLLOWING REFERENCE ++++
D. S. Wishart and A. M. Nip
Protein Chemical Shift Analysis: A Practical Guide
Biochem. Cell Biol. 76 (1998) pp. 153-163
-------- -------- --- Thank You --- -------- --------

     Residue    delta Ca    delta Ha    delta CO    delta Cb
        HIS2   -0.699235    0.129631   -0.964556    0.626928

Residue HIS2
 Angle [   AI,   AJ,   AK,   AL]  #tr/ns  S^2D 
--------------------------------------------
   Phi [    8,    7,    9,   22]   48.15    0.77
   Psi [    7,    9,   22,   23]   37.80    0.13
what I want is chemical shift of atom N. How could I get it ?
Best wishes!
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