我们从Python开源项目中，提取了以下9个代码示例，用于说明如何使用numpy.polyint()。
def calc_omega(cp): cp.insert a=[] for i in range(len(cp)): ptmp = [] tmp = 0 for j in range(len(cp)): if j != i: row = [] row.insert(0,1/(cp[i]-cp[j])) row.insert(1,-cp[j]/(cp[i]-cp[j])) ptmp.insert(tmp,row) tmp += 1 p=[1] for j in range(len(cp)-1): p = conv(p,ptmp[j]) pint = numpy.polyint(p) arow = [] for j in range(len(cp)): arow.append(numpy.polyval(pint,cp[j])) a.append(arow) return a
def test_polyint_type(self): # Ticket #944 msg = "Wrong type, should be complex" x = np.ones(3, dtype=np.complex) assert_(np.polyint(x).dtype == np.complex, msg) msg = "Wrong type, should be float" x = np.ones(3, dtype=np.int) assert_(np.polyint(x).dtype == np.float, msg)
def oscillation_indicator(): """ Generate the oscillation indicator matrix """ ? = zeros([N+1, N+1]) for a in range(1,N+1): ?Dera = ?Der[a] for p, m in product(range(N+1), range(N+1)): antiderivative = polyint(?Dera[p] * ?Dera[m]) ?[p,m] += antiderivative(1) - antiderivative(0) return ?
def basis_polys(): """ Returns the basis polynomials and their derivatives and antiderivatives """ nodes, _, _ = quad() ? = [lagrange(nodes,eye(N+1)[i]) for i in range(N+1)] ?Der = [[polyder(?_p, m=a) for ?_p in ?] for a in range(N+1)] ?Int = [polyint(?_p) for ?_p in ?] return ?, ?Der, ?Int
