Re: [thredds] thredds Digest, Vol 29, Issue 19

• To: <thredds@xxxxxxxxxxxxxxxx>
• Subject: Re: [thredds] thredds Digest, Vol 29, Issue 19
• From: "Comiskey, Glenn" <g.comiskey@xxxxxxxx>
• Date: Fri, 1 Jul 2011 10:25:06 +0100

Hi,

Have found archive postings on this matter which have highlighted the
relationship between the elements <start>, <size> and <resolution>, i.e.
<start> represents the southern/western edge, <start> + <size>
represents the northen/eastern edge and <resolution> simply reports the
spacing between points. Had got it into my head that <start> represented
the southern/western edge and that <start> + (<size> * <resolution>)
represented the northern/eastern edge.

Having reread the doc. and checked the examples it now seems all so
clear, especially as the example gives a <northsouth> <start> value of
10, a <size> value of 80, a <resolution> value of 2, a <eastwest>
<start> value of -130, a <size> value of 260 and a <resolution> value of
2 which would have given me a latitude range of 10-170 degrees North and
a longtitude range of -130-390 degrees East.

Regards,

Glenn

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Message: 2
Date: Thu, 30 Jun 2011 17:50:40 +0100
From: "Comiskey, Glenn" <g.comiskey@xxxxxxxx>
To: <thredds@xxxxxxxxxxxxxxxx>
Subject: [thredds] THREDDS Catalog - geospatialCoverage
Message-ID:
        <BBFDF85BF71AD64FAC2CB716502BA1513F21A1@xxxxxxxxxxxxxxxxxxxxx>
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Hi,
 
I have a GRIB-1 file with geospatial coverage of -60 to -30 degrees East
with a resolution of 1.25 degrees, i.e. 25 points of longitude. However,
to get the correct values to display when viewing the dataset through
THREDDS v4.2.7 I have to enter geospatial coverage values
"<eastwest><start>-60</start><size>30</size><resolution>1.25</resolution
></eastwest>" as the server does not appear to recognize the resolution
value correctly, i.e. it appear to read it as
<resolution>1</resolution>.
 
Note: I have not problem with the latitude values
"<northsouth><start>10</start><size>40</size><resolution>1.0</resolution
></northsouth>".
 
Anyone else encountered this?
 
Kind regards,
 
Glenn Comiskey
Data System Administrator