Changed order equations

Author: ColasDroin

xtrack/twiss.py

@@ -1042,10 +1042,10 @@ def _compute_lattice_functions(Ws, use_full_inverse, s_co):
     # Crab dispersion
     dx_zeta = (Ws[:, 0, 4] - Ws[:, 0, 5] * Ws[:, 5, 4] / Ws[:, 5, 5]) / (
                Ws[:, 4, 4] - Ws[:, 4, 5] * Ws[:, 5, 4] / Ws[:, 5, 5])
-    dy_zeta = (Ws[:, 2, 4] - Ws[:, 2, 5] * Ws[:, 5, 4] / Ws[:, 5, 5]) / (
-                Ws[:, 4, 4] - Ws[:, 4, 5] * Ws[:, 5, 4] / Ws[:, 5, 5])
     dpx_zeta = (Ws[:, 1, 4] - Ws[:, 1, 5] * Ws[:, 5, 4] / Ws[:, 5, 5]) / (
                 Ws[:, 4, 4] - Ws[:, 4, 5] * Ws[:, 5, 4] / Ws[:, 5, 5])
+    dy_zeta = (Ws[:, 2, 4] - Ws[:, 2, 5] * Ws[:, 5, 4] / Ws[:, 5, 5]) / (
+                Ws[:, 4, 4] - Ws[:, 4, 5] * Ws[:, 5, 4] / Ws[:, 5, 5])
     dpy_zeta = (Ws[:, 3, 4] - Ws[:, 3, 5] * Ws[:, 5, 4] / Ws[:, 5, 5]) / (
                 Ws[:, 4, 4] - Ws[:, 4, 5] * Ws[:, 5, 4] / Ws[:, 5, 5])