Re: Missing data

• To: visad-list@xxxxxxxxxxxxx
• Subject: Re: Missing data
• From: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>
• Date: Tue, 13 Jul 1999 10:31:55 -0500

Hi Vikram,

For individual values, VisAD uses IEEE NaN to represent
missing.  You can set range values in FlatFields to
missing as follows:

  FlatField f = ...
  float[][] values = field.getFloats();
  values[0][j] = Float.NaN;  // this sets a missing value
  field.setSamples(values);

But do not put missing values (i.e., NaNs) into sample
locations of Sets.

Please let me know if this is not clear.

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

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