20020613: NIDS data (fwd)

• To: Pete Pokrandt <poker@xxxxxxxxxxxxxxxxxxx>
• Subject: 20020613: NIDS data (fwd)
• From: Steve Chiswell <chiz@xxxxxxxxxxxxxxxx>
• Date: Thu, 13 Jun 2002 14:26:05 -0600

Pete,

I believe you mean Level III (NIDS products).

GEMPAK and McIDAS used a different technique, relying on the
bit checksum defined by zlib, rather than a hard coded value,
and so both will continue to work.


Steve Chiswell
Unidata User Support

On Thu, 13 Jun 2002, Pete Pokrandt wrote:

>
> Thanks to Dan V for this info.  The ucnids.c program I'm using
> to uncompress the data suffers from this same problem.
>
> Pete
>
>
> > ------- Forwarded Message
> >
> > For those of you who don't know.  NWS subtly changed the NIDS zlib
> > compression today.  WXP used a 789C sequence to determine whether the
> > data are compressed or not.  As of this morning, this changed to 78DA.
> > So WXP now doesn't realize the NIDS data is compressed and thus is not
> > decoding the data properly.  I'm working on a fix which should be out
> > shortly.
> >
> > - --
> > ________________________________________________________
> > Daniel Vietor
>
>
>
> ------- End of Forwarded Message
>
>

• References:
  • NIDS data (fwd)
    • From: Pete Pokrandt