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Subject: ODF1.2 part 1 chapter 20.24 chart:interpolation
Hello members, the cubic spline interpolation has a wrong description in case of a closed line. It should be a periodic spline and the definition should contain the condition f_1'(0)=f_n'(n) and f_1''(0)=f_n''(n) as it is the rule in mathematics. This had been discussed in http://tools.oasis-open.org/issues/browse/OFFICE-2872 Andreas Guelzow had attached a solution in http://lists.oasis-open.org/archives/office/201009/msg00819.html but the current text in ODF1.2 part1 does not contain it, but the wrong condition f_1''(0)=3/2*(x_1 + x_{n-1} - 2x_0)=f_n''(n) I hope that you can correct it, before the text becomes a standard. Kind regards Regina Henschel
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