| Missing Data Programming Contest [message #66006] |
Wed, 08 April 2009 06:23 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Folks,
I don't have time today to think about this, so I've
decided to get you to do my thinking for me. :-)
Suppose you are expecting a data array and you suspect
the data has "missing values" in it that you wish to
exclude from further processing. You write a keyword
for your routine that allows the user to pass in what
he is using for the "missing value".
PRO Junker, data, MISSING_VALUE=missing_value
How would you write the code to assure that this missing
value would be excluded from further processing?
You should assume:
1. The data can be any data type except complex or string.
2. The missing value *could* be !VALUES.F_NAN.
3. Unsophisticated users might be using your program,
so, for example, they might pass in a missing value
such as 594.32.
No, this is NOT my homework! But I do need it ASAP. ;-)
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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