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bcatanzaro
 Post subject: Non-uniform data for cubic spline interpolation?
PostPosted: Sun Jan 03, 2016 8:53 pm 
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Joined: Sun Jan 03, 2016 8:48 pm
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I want to interpolate my data to a 2D grid. The data is a scalar field in two dimensions (e.g. F(i,j)). The data is not in a grid and I want to interpolate it to a grid, using bicubic or bilinear interpolation.

From what I can see, all of the spline routines assume an evenly spaced set of data. Is there an interpolation routine that accepts a "cloud" of points?
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Sergey.Bochkanov
 Post subject: Re: Non-uniform data for cubic spline interpolation?
PostPosted: Tue Jan 05, 2016 7:45 pm 
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Joined: Fri May 07, 2010 7:06 am
Posts: 927
No, linear/cubic spline interpolation is inherently "regular". Maybe RBF fitting will be good solution, although approximate one...
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