Re: [las_users] Request for selection of only one MISR band for LAS

[Roland Schweitzer <Roland.Schweitzer@xxxxxxxx>]

Penny,

What exactly did you try?  Is the band what LAS and Ferret think of as the z-axis?  If so it seems you should be able to create LAS configuration using only one point on that axis or use THREDDS to completely replace the axis definition using an ncML description to create the new axis.

Before I start trying a bunch of things, I'd like to know what's already been tried.

Roland

Oots, Penny C. (LARC-E301)[SCIENCE SYSTEMS & APPLICATIONS INC.] wrote:

Roland,

Remember this?  Unfortunately I have been asked to only show band 2
data.  I've tried some things in the Thredds catalog as well as in the
LAS configuration file for this dataset, but with no success.  Can you
suggest a way to just serve the band 2 data?  Preferably without the
'Select Depth' box showing up on the interface?

Thanks once again,
Penny


  

Date: Mon, 11 Jun 2007 09:04:18 -0500
From: "Roland Schweitzer" <weathertop.consulting@xxxxxxxxx>
To: p.c.oots@xxxxxxxxxxxxx,
    oar.pmel.las_users@xxxxxxxx,
    Steven.C.Hankin@xxxxxxxx
Subject: Re: Fwd: Re: [las_users] AddXML : "File parsed. No Lat/Lon 
grids found."
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Penny,

Here is an example that answers both your questions (how to get addXML
      

to recognize the grids and how to treat all the individual files as 
one big data set).  My example only aggregates three months.  You can 
just add on months to get the full time range you want.

These files are weird.  Time has been averaged out of the data.  
However, a time axis still exists in the file even though it's not 
used by any of the variables.  I made up a new variable name for the 
new synthetic time axis.  I picked "mytime".  You probably should come
      

up with a better name.  And you should verify that I have actually 
done something that makes sense according to your understanding of  
the data. :-)

Roland

<dataset name="misraer" ID="misraer" serviceName="gridded"
   urlPath="test/MISR_aggregation">
      <netcdf

      

xmlns="<http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2>http://ww
w.unidata.ucar.edu/namespaces/netcdf/ncml-2.2">
  

         <aggregation type="joinNew" dimName="mytime">
            <netcdf

      

location="/home/porter/rhs/UserQuestions/PennyOots/MISR_AM1_CGAS_0_5_DEG
_JUN_2003_F02_0025.nc"/>
  

            <netcdf

      

location="/home/porter/rhs/UserQuestions/PennyOots/MISR_AM1_CGAS_0_5_DEG
_JUL_2003_F02_0025.nc"/>
  

            <netcdf

      

location="/home/porter/rhs/UserQuestions/PennyOots/MISR_AM1_CGAS_0_5_DEG
_AUG_2003_F02_0025.nc"/>
  

        <variableAgg name="Optical_depth_average"/>
        <variableAgg name="Optical_depth_average_count"/>
        <variableAgg name="Optical_depth_standard_deviation"/>
        </aggregation>
   <variable name="Band">
      <attribute name="_CoordinateAxisType" value="GeoZ"/>
   </variable>
   <variable name="mytime" type="double">
      <attribute name="units" value="days since 2003-01-01
      

00:00:00"/>
  

      <attribute name="_CoordinateAxisType" value="Time"/>
      <values>0 31 62</values>
   </variable>
</netcdf>
</dataset>