3D view of the magnetic field topology in the corona of CR 2219. These solid lines are representative magnetic field lines displaying the global evolution of the CME and traced from magnetic field in the region of (1 R_s ≤ r ≤ 20R_s) × (22.5° ≤ θ ≤ 157.5°) × (29° ≤ ϕ ≤ 299°) which encloses the theoretical ‘S’ shape flux rope. Rows 1–4 correspond to the simulation results of the CME simulation at 0, 1, 3 and 5 hours, respectively. The magnetic field lines illustrated in the left panel (a, d, g, j) are viewed from a direction of (θ, ϕ) = (90°, 250°), middle panel (b, e, h, k) from a direction of (θ, ϕ) = (90°, 340°), and right panel (c, f, i, l) from the direction of the Z axis, these three directions of sight are orthogonal with respect to each other.