NOTE: The cf-satellite mailing list is no longer active. The list archives are made available for historical reasons.
Ghanshsan:
I have a question about the variables (data structures) you are using to store
the image data.
If your data is on a lat/lon grid of some sort (e.g. 90 degrees of longitude
and 180 degrees of latitude, which from a data structure perspective is
rectangular and all pixels/data points are on-earth), what is the motivation
for including off-earth regions in the data variable ?
very respectfully,
randy
----------------------------------------
From: "Ghansham Sangar" <ghanshamsangar@xxxxxxxxx>
Sent: Sunday, March 02, 2014 5:58 AM
To: "cf-satellite" <cf-satellite@xxxxxxxxxxxxxxxx>
Subject: Re: [cf-satellite] missing value in auxillary coordinate variables
what is your opinion about geostationary satellites where we have to cold space
all around the imaged disk and we are providing geolocation information per
pixel lat /lon as 2D lat/lon arrays.
Regards
Ghansham On Mar 1, 2014 12:46 AM, "Jim Biard" <jbiard@xxxxxxxxxx> wrote:
Ghansam,
Actually, in the satellite world (or any trajectory or swath-type case), it is
entirely possible that you might have acquired measurements at a point, but the
location information for that point may have been garbled or lost. If we don't
require linkage, then we can preserve the maximum amount of data.
Grace and peace,
Jim
Visit us on
Facebook Jim Biard
Research Scholar
Cooperative Institute for Climate and Satellites NC
North Carolina State University
NOAA's National Climatic Data Center
151 Patton Ave, Asheville, NC 28801
e: jbiard@xxxxxxxxxx
o: +1 828 271 4900
On Feb 28, 2014, at 2:12 PM, Ghansham Sangar <ghanshamsangar@xxxxxxxxx>
wrote:
hi sir
thanks a lot for the prompt reply.
obviously data should be missing where coordinates are missing.
ghansham On Mar 1, 2014 12:22 AM, "Jim Biard" <jbiard@xxxxxxxxxx> wrote:
Ghansham,
I would say yes, unreservedly, but others are insisting that this only OK if
you also have missing values in all the associated data variables.
Grace and peace,
Jim
Visit us on
Facebook Jim Biard
Research Scholar
Cooperative Institute for Climate and Satellites NC
North Carolina State University
NOAA's National Climatic Data Center
151 Patton Ave, Asheville, NC 28801
e: jbiard@xxxxxxxxxx
o: +1 828 271 4900
On Feb 28, 2014, at 12:53 PM, Ghansham Sangar <ghanshamsangar@xxxxxxxxx>
wrote:
hi sir
Is it possible to specify missing value in auxillaery coordinate variables (2-D
lat/lon variables).
Regards
Ghansham _______________________________________________
cf-satellite mailing list
cf-satellite@xxxxxxxxxxxxxxxx
For list information or to unsubscribe, visit:
http://www.unidata.ucar.edu/mailing_lists/
cf-satellite archives: