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What kind of spline algorithm is used?
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I created a javascriptmodule, which creates a cubic spline function from a list of points named "pointL". I used the usual assumptions for spline S(x):
S_i(x_i)=S_{i+1}(x_i) and first and second derivative match there.
When I use my module and geogebra splinecommand  they differ. So I believe the "Spline" command deliver not such a thing that in literature is meant by "cubic spline". So what is it?
I attached a file for demonstration
Files:
splineproblem.ggb
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Thank you that you pointed out that I should read the "comment"  I really should (sorry). But why not the usual algorithm? Is there an advantage? Can you integrate or take a derivative of that sort of spline?
The second link seems to be broken:
https://beta.geogebra.org/n...
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