Hi Bill,
> Is dynamic_reconfigure expected to be API stable for the C-Turtle
> release?
No, but I am aware of the growing use of dynamic_reconfigure, and am
already going to great pains not to break compatibility. Whatever
happens, there will be a very progressive transition.
> How is the startup order controlled in a launch file? As far I can tell
> the timing and order is intentionally indeterminate, so the nodes
> parameters may not be set until the node is launched. Is this correct?
>
>
> output="screen">
>
>
> type="dynparam" args="set_from_parameters hokuyo_node">
>
>
>
>
>
> Is dynamic_reconfigure seen as a replacement for the current method of
> setting parameters or should nodes support both methods for C-Turtle?
Here is what dynamic_reconfigure does:
1) At startup reads its parameters from the parameter server before
accepting any reconfigure requests.
2) Whenever there is a reconfigure request, it updates the parameter
server with the new values.
Thus, any parameters set on the node by roslaunch tags will be
seen by a dynamically reconfigurable node just as it would have been by
a conventional node.
Moreover, any parameters set by dynparam will take precedence over
parameters not set by dynparam.
You probably want to write your example as: