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Topic: Bivariate Pchip
Replies: 9   Last Post: Jan 19, 2013 6:14 AM

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John D'Errico

Posts: 9,130
Registered: 12/7/04
Re: Bivariate Pchip
Posted: Jan 16, 2013 8:48 PM
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"samar" wrote in message <kd6sdp$qnk$>...
> Hi all,
> I would like to use Pchip function to interpolate my 2-dimensional data set.
> I'm actually using spline interpolation (with csapi function) but it doesn't work well.
> I think that Pchip will be better for my data set but I have no idea how to use it with 2 variables: x1 (n values) and x2 (m values) are my variables and V=f(X1,X2) is the n*m matrix containning all values taken by f for each couple (x1,x2)
> The second question can we have the result of pchip in PPFORM?
> Thank you very much for you help!

1. pchip DOES return a ppform.

2. There is no 2-d pchip implemented for MATLAB that I know of.


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