# Revision history [back]

Hi. Is there an error in the following?

    data.position = self.appendT(data.position, self.position)
data.velocity = self.appendT(data.velocity, self.position)
data.effort = self.appendT(data.effort, self.position)


It seems like it should be

    data.position = self.appendT(data.position, self.position)
data.velocity = self.appendT(data.velocity, self.velocity)
data.effort = self.appendT(data.effort, self.effort)


Hi. Is there an error in the following?

    data.position = self.appendT(data.position, self.position)
data.velocity = self.appendT(data.velocity, self.position)
data.effort = self.appendT(data.effort, self.position)


It seems like it should be

    data.position = self.appendT(data.position, self.position)
data.velocity = self.appendT(data.velocity, self.velocity)
data.effort = self.appendT(data.effort, self.effort)


edit: My intention was for this to just be a comment on the accepted answer, not a separate answer. Oops.