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Removing unwanted data from a structure [message #84137]

Fri, 26 April 2013 09:34

cab581
Messages: 7
Registered: April 2013

Junior Member

Hi all,

I tried searching for this, but nothing seemed to match my question, so sorry if this has been asked before.

I have a structure with data from an experiment that contains error values. These are given as (for example, but always less than -100) -999 or -888. I want to keep the structure in tact for analysis, but I'm looking simply to replace these values with NaN. I tried and failed (see below) to use WHERE, but it doesn't work and I'm told that you can't use IF statements with structures.

-----
My thoughts:
I know with an array I can just use

B = WHERE(A LT -100, count)
IF (count GT 0) THEN A[B] = !VALUES.F_NAN

but I think that it is probably inefficient (I have a lot of data) to pull out arrays from my structures, then place them all back in to a new structure to continue my work. Is there any way that I can assign the parts of the structure as scalars for the purpose of an IF statement but replace them back as part of a loop?

Any help is appreciated.

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[Message index]

		Removing unwanted data from a structure By: cab581 on Fri, 26 April 2013 09:34
		Re: Removing unwanted data from a structure By: Jeremy Bailin on Fri, 10 May 2013 15:10
		Re: Removing unwanted data from a structure By: cab581 on Fri, 10 May 2013 10:41
		Re: Removing unwanted data from a structure By: Jeremy Bailin on Thu, 09 May 2013 16:13
		Re: Removing unwanted data from a structure By: cab581 on Wed, 08 May 2013 11:49

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