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| Spline interpolation - Very Beginer need help http://forum.alglib.net/viewtopic.php?f=2&t=2328 |
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| Author: | SannaK [ Thu May 07, 2015 9:42 am ] |
| Post subject: | Spline interpolation - Very Beginer need help |
Hello, I'm delphi developer and i would like to use interpolation for join many points. I have a list of points in 2D Space : likeness "TList<PointF(X, Y)>" So i wanted to use the function "Spline2DBuildBilinear" but i don't really understand how to use it. Quote: Input parameters: X - spline abscissas, array[0..N-1] Y - spline ordinates, array[0..M-1] F - function values, array[0..M-1,0..N-1] M,N - grid size, M>=2, N>=2 Output parameters: C - spline interpolant So if i have 3 points { A(0,0); B(100,100); C(50,200) } X contains [0, 100, 200] (?) Y contains [0, 100, 50] (?) What i should put for F ? Same question about M and N. I guess it's something like M := 400 and N := 400 ? Maths are so far for me, it's why i need your help. Ask me if you didn't understand something in my message. Thanks, Sanna |
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