Re: Import data in SpreadSheet

• To: "Peter X. Cao" <xcao@xxxxxxxxxxxxx>
• Subject: Re: Import data in SpreadSheet
• From: "From: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>" <billh@xxxxxxxxxxxxx>
• Date: Tue, 14 Sep 1999 16:21:07 -0500 (CDT)

Hi Peter,

> 2)
> HDFEOS files are hierarchical. There may be more than one data objects in a
> single file while visad spreadsheet opens only one dataset a time. How do
> you open an hdfeos file which
> has more one data objects ? I am facing this problem with HDF/HDF5 files.

Actually, Tom Rink is the best person to answer this, but
I'll take a shot and let him correct me if I'm wrong.

An HDF-EOS file with multiple data objects is opened as a
tuple of those data objects.  This may be a tuple with lots
of components.  This is pretty much the same as when you
open a netCDF file with lots of data objects.

The one thing I am not sure of with HDF-EOS, is what happens
if there are lots of data objects that are images or grids in
a time sequence.  Since (I think) HDF-EOS does not document
this higher-level structure, it would be hard for VisAD to
deduce it.  So my guess is they come in as a big tuple.

Cheers,
Bill
----------------------------------------------------------
Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI  53706
hibbard@xxxxxxxxxxxxxxxxx  608-263-4427  fax: 608-263-6738
http://www.ssec.wisc.edu/~billh/vis.html

• References:
  • Import data in SpreadSheet
    • From: Peter X. Cao