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Re: Array into binary array [message #86541 is a reply to message #86540]

Mon, 18 November 2013 01:08

Oliver Angelil
Messages: 11
Registered: November 2013

Junior Member

B = Finite(A)

is what I wanted. Wow, that was extremely easy. Thanks a lot you two!

Oliver

On Monday, 18 November 2013 09:57:53 UTC+1, alx wrote:
> Le lundi 18 novembre 2013 08:51:09 UTC+1, Oliver Angelil a écrit :
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>> I have an array:
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>> A =MAKE_ARRAY(4000, 120, 60, 3, /FLOAT, VALUE =!VALUES.F_NaN)
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>> It consists of numbers between 0 and 1 as well as NaN values. I want to make a binary array from this, such that when an element is NaN, it'll be 0 in the binary array, and when it is a number between 0 and 1, it'll be 1 in the binary array.
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>> Perhaps there is a quick solution which I have not found yet?
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>> Thanks in advance,
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>> Oliver
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> This is the purpose of the FINITE function. From IDL documentation:
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> "Returns 1 (True) if its argument is finite. If the argument is infinite or not a defined number (NaN), the FINITE function returns 0 (False). The result is a byte expression of the same structure as the argument X."
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> Then, you can simply write:
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> IDL> A =MAKE_ARRAY(4000, 120, 60, 3, /FLOAT, VALUE =!VALUES.F_NaN)
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> ... populate A ...
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> IDL> B = Finite(A)
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> use B ...
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> alx.

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[Message index]

		Array into binary array By: Oliver Angelil on Sun, 17 November 2013 23:51
		Re: Array into binary array By: Helder Marchetto on Mon, 18 November 2013 00:18
		Re: Array into binary array By: lecacheux.alain on Mon, 18 November 2013 00:57
		Re: Array into binary array By: Oliver Angelil on Mon, 18 November 2013 01:08

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