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Testing for NODATA presence in a dataset [message #33389]

Sat, 21 December 2002 14:00

Jonathan Greenberg
Messages: 91
Registered: November 2002

Member

I'm having a problem testing for whether an entry in an array is NAN --
doing something like:

If (value EQ !VALUES.F_NAN) then begin
print,'Not a number'
Endif else begin
print,'Is a number!'
Endelse

Will always return 'Is a number', even if I set:
value = !VALUES.F_NAN

What's going wrong with this?

--j

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[Message index]

		Testing for NODATA presence in a dataset By: Jonathan Greenberg on Sat, 21 December 2002 14:00
		Re: Testing for NODATA presence in a dataset By: tam on Fri, 03 January 2003 06:10
		Re: Testing for NODATA presence in a dataset By: George N. White III on Fri, 03 January 2003 07:00

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