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Re: How to plot linear regression relation of two array? [message #65044 is a reply to message #65043] Mon, 09 February 2009 12:42 Go to previous messageGo to previous message
Hu is currently offline  Hu
Messages: 35
Registered: January 2009
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On Feb 9, 12:12 pm, Vince Hradil <vincehra...@gmail.com> wrote:
> On Feb 9, 1:45 pm, Hu <jha...@gmail.com> wrote:
>
>> Hi,
>
>> I am trying to plot a linear regression relation of two array
>> (supposing A and B) by using IDL. What I want is to got a chart like
>> this link shows (the group is unable to post figure directly):http://serc.carleton.edu/images/introgeo/teachingw data/LeastSquaresGr...
>
>> especially, How can I got the black straight line and the coefficients
>> R^2  ?
>
>> Thanks
>
> Have you looked in the help for linfit()?

Yes, I use function linfit() to get the parameters a and b (Y=a+b*X)
But How can I get the R^2 ?

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