Hi there
I’m studying the ElementDefinitions module and I have problems interpreting the following formula from the subroutines NodalBasisFunctions1D:
s = s + coeff(i) * u ** p(i)
Especially I can’t understand the meaning of coeff(i) and p(i).
Furthermore, I don’t know if ‘u’ is the point’s coordinate in global, serendipity or length coordinates.
Thanks,
NodalBasisFunctions1D
Re: NodalBasisFunctions1D
Hi Diana,
this is just the evaluation of the 1d-element basis polynomials
in normal form:
Basis_i(u) = c_0 + c_1*u + c_2*u^2 + ...
the coordinate u is in element local coordinates -1 <= u <= 1,
most usually the element integration point.
Juha
this is just the evaluation of the 1d-element basis polynomials
in normal form:
Basis_i(u) = c_0 + c_1*u + c_2*u^2 + ...
the coordinate u is in element local coordinates -1 <= u <= 1,
most usually the element integration point.
Juha