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Re: 2D K-S test [message #56570 is a reply to message #56519]

Sat, 27 October 2007 08:11

ianpaul.freeley
Messages: 18
Registered: March 2007

Junior Member

Thanks Wayne. I went and coded it up and wondered about that issue but
didn't do anything about it. I'll go back and add some if statements.

-IP

On Oct 26, 12:46 pm, wlandsman <wlands...@gmail.com> wrote:
> On Oct 26, 9:29 am, Loren Anderson <ander...@bu.edu> wrote:
>
>> Hi, I just spent a while working with the K-S test, but I'm confused
>> as to what you are trying to do. The K-S test seems to me to be one-
>> dimensional by nature. Can you clarify a bit?
>
> This is discussed in the section of Numerical Recipes titled "Do Two-
> Dimensional Distributions Differ" (Section 14.7 in my edition.)
> The idea is to determine if a 2-d distribution of points is consistent
> with another 2-d distribution (or a model). You are right that one
> cannot directly generalize the 1-d K-S test because a cumulative
> probability distribution is only defined in 1d, so one needs to define
> a surrogate.
>
> Back to the OP's question. I am not aware of any IDL
> implementations of the code. (I started but never finished working
> on it.) If you do code it yourself and have an old edition of NR,
> check out the bug fix reported athttp://www.nr.com/forum/showthread.php?t=576
>
> --Wayne

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		2D K-S test By: ianpaul.freeley on Thu, 25 October 2007 09:49
		Re: 2D K-S test By: ianpaul.freeley on Sat, 27 October 2007 08:11
		Re: 2D K-S test By: wlandsman on Fri, 26 October 2007 10:46

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