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 Post subject: not-a-knot condition
PostPosted: Fri Nov 25, 2011 7:02 pm 
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Joined: Fri Nov 25, 2011 6:54 pm
Posts: 1
Hi everyone;
I am new to alglib. what I am trying to do is implement something like spline in matlab. my question is: how can I set "not-a-knot" condition in spline1dbuildcubic function. Indeed I do not have much about not-a-knot end condition (I saw it in matlab documentation) and I am getting some different values than matlab when I run my application. I think the reason is something related to end point conditions. any idea appreciated. thanks.

p.s. if my problem is not clear please feel free to tell me so that I can clearify it more.


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 Post subject: Re: not-a-knot condition
PostPosted: Mon Nov 28, 2011 7:19 am 
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Joined: Fri May 07, 2010 7:06 am
Posts: 927
Current version of ALGLIB does not include not-a-knot boundary conditions. If you just need good spline, you can use parabolically terminated splines - they are good enough for most practical purposes.


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