[Pw_forum] 'Calculation of phonon dos'

[Raghani Pushpa]

Dear users,
I was calculating the phonon density of states by using matdyn.f90 program 
but it gives the following error,

 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
     from matdyn : error #        -1
     non-analytic term for q=0 missing !
 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

what does this error mean?

Thanx,
Pushpa
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