Hi Justin,
I'm not sure it should be set to zero if it is unknown as zero implies a
completely accurate shift which is highly unlikely (I think Eldon
suggested this one to me ages ago). It is better to say unknown in that
case (i.e., '.' in NmrStar). Perhaps the BMRB or CCPN guys could indicate
their preference towards a precision if the CCPN project does not have a
chemical shift SD - such as the digital accuracy of points, etc.
Chris
> Another small thing, the ECI module sets the error for assigned chemical
> shifts to "." if there is no SD in the ccpn project for the resonance.
> This should be either zero or some value which I don't know. Perhaps the
> precision of one digital point of the spectrum the peak was picked in.
>
> justin
>
> --
> Justin Lecher
> Institute of Complex Systems
> ICS-6 Structural Biochemistry
> Research Centre Juelich
> 52425 Juelich, Germany
> phone: +49 2461 61 2117
>
>
>
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