jacobian

dustpy.std.dust.jacobian(sim, x, dx=None, *args, **kwargs)

Function calculates the Jacobian for implicit dust integration.

Parameters:

• sim (Frame) – Parent simulation frame

• x (IntVar) – Integration variable

• dx (float, optional, default : None) – stepsize

• args (additional positional arguments) –

• kwargs (additional keyworda arguments) –

Returns:

jac – Dust Jacobian

Return type:

Sparse matrix

Notes

Function returns the Jacobian for Simulation.dust.Sigma.ravel() instead of Simulation.dust.Sigma. The Jacobian is stored as sparse matrix.