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Re: Adding elements in an Array [message #85993 is a reply to message #85992]

Mon, 23 September 2013 13:54

Mats Löfdahl
Messages: 263
Registered: January 2012

Senior Member

On 2013-09-23 22:51, David Fanning wrote:
> Mats Löfdahl writes:
>
>> 11 and 13 are not the mean values of [10, 20, 5] and [6, 18, 17],
>> respectively. 11 happens to be the mean of [1, 30, 2] but in general you
>> need floating point calculations:
>>
>> IDL> print,rebin(float(a),3)
>> 11.6667 13.6667 11.0000
>
> Oh, I know that, but I was talking about something else entirely and
> just using integer arrays to illustrate the point. :-)

I'm sure you do. And did. But since the OP's example was with an integer
array I thought it might be pointed out. :o)

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[Message index]

		Adding elements in an Array By: bhattacharjee12 on Sun, 22 September 2013 11:31
		Re: Adding elements in an Array By: David Fanning on Sun, 22 September 2013 11:46
		Re: Adding elements in an Array By: bhattacharjee12 on Sun, 22 September 2013 12:13
		Re: Adding elements in an Array By: natha on Mon, 23 September 2013 10:46
		Re: Adding elements in an Array By: wlandsman on Mon, 23 September 2013 11:30
		Re: Adding elements in an Array By: David Fanning on Mon, 23 September 2013 12:37
		Re: Adding elements in an Array By: wlandsman on Mon, 23 September 2013 13:14
		Re: Adding elements in an Array By: David Fanning on Mon, 23 September 2013 13:31
		Re: Adding elements in an Array By: David Fanning on Mon, 23 September 2013 13:36
		Re: Adding elements in an Array By: Mats Löfdahl on Mon, 23 September 2013 13:48
		Re: Adding elements in an Array By: David Fanning on Mon, 23 September 2013 13:51
		Re: Adding elements in an Array By: Mats Löfdahl on Mon, 23 September 2013 13:54
		Re: Adding elements in an Array By: David Fanning on Mon, 23 September 2013 14:01
		Re: Adding elements in an Array By: Mats Löfdahl on Mon, 23 September 2013 14:10
		Re: Adding elements in an Array By: David Fanning on Mon, 23 September 2013 14:15
		Re: Adding elements in an Array By: Mats Löfdahl on Mon, 23 September 2013 14:16
		Re: Adding elements in an Array By: David Fanning on Mon, 23 September 2013 14:20
		Re: Adding elements in an Array By: David Fanning on Mon, 23 September 2013 14:25
		Re: Adding elements in an Array By: wlandsman on Mon, 23 September 2013 17:56
		Re: Adding elements in an Array By: wlandsman on Mon, 23 September 2013 14:35
		Re: Adding elements in an Array By: Mats Löfdahl on Mon, 23 September 2013 18:50
		Re: Adding elements in an Array By: wlandsman on Mon, 23 September 2013 13:40
		Re: Adding elements in an Array By: David Fanning on Mon, 23 September 2013 13:44

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