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what is the highest subscript in the array?!? [message #70774]

Thu, 06 May 2010 19:12

munka
Messages: 36
Registered: December 2009

Member

Hello team,

I find myself wanting to use the highest subscript in an array and
coding "flux[n_elements(flux)-1]"... I seem to remember seeing a
shortcut on here, and I can't remember what it is.

It's irrelevant, but here is where I most recently used this. This
finds the local maximum in an array.
index=where(flux eq max(flux) and flux ne flux[0] and flux ne
flux[n_elements(flux)-1],ct)

Thanks in advance,

~Bill

PS: Right before I posted this, I searched and I figured that
array[[-1]] should return the highest array value... but it doesn't,
and I'm still stumped.

IDL> array=indgen(10)
IDL> print,array[0]
0
IDL> print,array[9]
9
IDL> print,array[10]
% Attempt to subscript ARRAY with <INT ( 10)> is out of
range.
% Execution halted at: $MAIN$
IDL> print,array[[10]]
9
IDL> print,array[[-1]]
0
IDL> print,array[[-2]]
0
IDL>

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[Message index]

		what is the highest subscript in the array?!? By: munka on Thu, 06 May 2010 19:12
		Re: what is the highest subscript in the array?!? By: munka on Fri, 07 May 2010 19:09
		Re: what is the highest subscript in the array?!? By: penteado on Fri, 07 May 2010 12:05
		Re: what is the highest subscript in the array?!? By: munka on Fri, 07 May 2010 11:51
		Re: what is the highest subscript in the array?!? By: munka on Fri, 07 May 2010 11:46
		Re: what is the highest subscript in the array?!? By: eddie on Fri, 07 May 2010 08:37
		Re: what is the highest subscript in the array?!? By: wlandsman on Fri, 07 May 2010 03:35
		Re: what is the highest subscript in the array?!? By: wlandsman on Fri, 07 May 2010 03:20
		Re: what is the highest subscript in the array?!? By: Carsten Lechte on Fri, 07 May 2010 02:34
		Re: what is the highest subscript in the array?!? By: R.G.Stockwell on Thu, 06 May 2010 22:39
		Re: what is the highest subscript in the array?!? By: Giuseppe Papa on Sat, 15 October 2011 11:57

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