the libdisk module

pNbody.libdisk.Diff(f, x, s=None, k=2)

First derivative of f(x)

pNbody.libdisk.get_1d_Sigma_From_Rho_Phi(rho, phi, r, dr, beta)

the function return the radial velocity dispersion even if beta is non zero

pNbody.libdisk.get_Integral(v, dr, ia, ib)

Integrate the vector v, between ia and ib, using trapezes.

v : values of cells (must be 1 dimensional) dr : corresponding physical size of cells ia : lower real indice WARNING : the indicies must now be integer !!! ib : higher real indice WARNING : the indicies must now be integer !!!