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[IDV #IWW-736381]: Problem with data accessed through OPeNDAP/Hyrax + NCSA HDF5 handler

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  • Subject: [IDV #IWW-736381]: Problem with data accessed through OPeNDAP/Hyrax + NCSA HDF5 handler
  • Date: Sun, 01 Nov 2009 19:06:28 -0700
Hi Chris,

> Description of problem: I accessed the URL:
> http://acdisc.sci.gsfc.nasa.gov/opendap/HDF-EOS5/Aura_OMI_Level3/OMAERUVd.003//2004/OMI-Aura_L3-OMAERUVd_2004m1001_v003-2009m0714t093948.he5
> and plotted the first 2D field, FinalAerosolAbsOpticalDepth388nm, and got a 
> streaky picture (see attachment). At first, I assumed it was the OPeNDAP 
> server (Hyrax with NCSA HDF5 handler), but then I tried Panoply (see 
> attachment), which shows no such feature.
> 
> Any ideas?
> 

This is the result of having fast rendering turned on for the display, which is 
the default behavior. Basically, we don't try to adjust the display for 
overlapping the longitude  seams because doing so is fairly expensive. You can 
turn off fast rendering (which actually means to turn on seam adjustment)  for 
an individual display through its Edit-> Properties dialog. You can also make 
fast rendering=off as the default through the main Edit->Preferences dialog.

-Jeff

> 


Ticket Details
===================
Ticket ID: IWW-736381
Department: Support IDV
Priority: Normal
Status: Closed