[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Datastream #COG-428018]: Unidata: NEXRAD composite question

Hi Russ,

re: Chiz uses the N0R Level III products which are 125 km

> Ok thats what I thought.


> Yes, the Unidata composite is far better than the RCM composite.

re:

> Question: Is there any way to know the difference between "NO
> DATA" and "NO ECHOS"  in the Unidata composite?

Currently, no.  Chiz just told me, however, that he could change
the compositing algorithm to differentiate the conditions.  This would
require a change to my ADDE server for McIDAS, and a change in the
color table all sites are using right now (GEMPAK and McIDAS).  I
am not sure what it might do to the IDV... maybe nothing since it
gets its data from an ADDE server.

> The RCM composite is
> generated at (what appears to be) 30 minute intervals and the Unidata
> composite is generated at 5 minute intervals. This seems to preclude
> using the RCM image as a DATA / NO DATA mask for the Unidata product.

My comment about the RCM composite was not aimed at convincing you
to use it to discriminate for each Unidata composite, but, rather
for the end user to be reminded that there are holes in the data.

Cheers,

Tom
****************************************************************************
Unidata User Support                                    UCAR Unidata Program
(303) 497-8642                                                 P.O. Box 3000
address@hidden                                   Boulder, CO 80307
----------------------------------------------------------------------------
Unidata HomePage                       http://www.unidata.ucar.edu
****************************************************************************


Ticket Details
===================
Ticket ID: COG-428018
Department: Support Datastream
Priority: Normal
Status: Closed