Hi Iryna,
> I've tried to construct b-splines and evaluate them on the uniform knots. I
> become always the same error on the margins of the interval, over which the
> b-splines where constructed.
> // construct five uniform knots {0, 1, 2, 3, 4}
> gsl_bspline_knots_uniform(0, 4, w);
Are you mixing "knots" and "breakpoints"? That method constructs
knots corresponding to uniform breakpoints on [0, 4]. The method name
is a bit confusing and specifying a basis differs from what you might
expect if you came from, say, Matlab.
- Rhys
P.S. The reference is at
http://www.gnu.org/software/gsl/manual/html_node/Constructing-the-knots-vector.html.
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