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Re: Array comparison part 2 [message #32385 is a reply to message #32380]

Fri, 04 October 2002 10:21

tam
Messages: 48
Registered: February 2000

Member

Dick Jackson wrote:
> "Tom McGlynn" <tam@lheapop.gsfc.nasa.gov> wrote in message
> news:3D9D9E8B.8060401@lheapop.gsfc.nasa.gov...
>
>>
>> Sean Raffuse wrote:
>>
>>> Thanks for all the help on my first question. I now have a related
>>> question.
>>>
>>> What is the best (read: fastest) way to do the following:
>>>
>>> I have an array of coordinates, A = intarr(2,25)
>>> and I have another array of a specific location, B = [125,1043]
>>>
>>> I would like to determine if location B is one of the coordinates in
>>
> A. I
>
>>> need to know if A[*,?] = 125, 1043
>>>
>>> Is it possible to do this without splitting A?
>>
>> Just try
>>
>> w = where(b[0] eq a[0,*] and b[1] eq a[1,*])
>>
>> No need for anything complex here.
>> Or perhaps it's too early in the morning and I'm missing something...
>
>
> Of course, I was just solving the puzzle as given "without splitting A".
> Yours is certainly a better solution overall.
>

I guess I just assumed that "without splitting A" meant
without divvying things up in some kind of for loop.
Perhaps the original poster could be more explicit...
Always good to know the rules of the game!

Tom McGlynn

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[Message index]

		Re: Array comparison part 2 By: JD Smith on Fri, 04 October 2002 13:04
		Re: Array comparison part 2 By: tam on Fri, 04 October 2002 10:21
		Re: Array comparison part 2 By: Dick Jackson on Fri, 04 October 2002 08:46
		Re: Array comparison part 2 By: James Kuyper on Fri, 04 October 2002 07:20
		Re: Array comparison part 2 By: tam on Fri, 04 October 2002 06:58
		Re: Array comparison part 2 By: chia on Thu, 03 October 2002 17:27
		Re: Array comparison part 2 By: Dick Jackson on Thu, 03 October 2002 09:33

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