fix bug for symbolic RNE
@@ -2174,7 +2174,7 @@ class ERobot(BaseERobot):
for j, link in enumerate(robot):
I[j] = SpatialInertia(m=link.m, r=link.r)
if symbolic and link.Ts is None:
- Xtree[j] = SE3(np.eye(4, dtype="O"), check=False)
+ Xtree[j] = SE3(np.eye(4, dtype="int"), check=False)
else:
Xtree[j] = SE3(link.Ts, check=False)
s[j] = link.v.s
