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Use of fill_value in HDF files [message #49164]

Thu, 29 June 2006 08:55

mconner
Messages: 2
Registered: June 1996

Junior Member

I think this is more properly addressed to an HDF group, but there are
quite a few HDFers here and I'm using IDL to create these files.

For the valid_range attribute (RANGE parameter in HDF_SD_SETINFO),
should it be the range of the uncalibrated data, or the range of the
calibrated data. I'm storing a calibrated value that goes from 0.0 to
1.0 as a short int that goes from 0-10000 to save a couple bytes per
element. Should valid_range be set to 0.0-1.0 or 0-10000? I'm
thinking the latter, but thought I'd ask.

Mark Conner

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