[ros-users] problems with image_transport and remap

Tully Foote tfoote at willowgarage.com
Mon Apr 5 17:23:40 UTC 2010

As of 0.9 remapping arguments are resolved before they are substituted.
See http://www.ros.org/wiki/Remapping%20Arguments

The resolveName call is unnecessary.  roscpp will do that on all topics and
parameters automatically.  The API is available in case the node is doing
things to topics which are not interacting with roscpp directly.


On Mon, Apr 5, 2010 at 9:16 AM, Blaise Gassend <blaise at willowgarage.com>wrote:

> I'm not actually certain that those resolveNames are necessary. I added
> them in early on, and thought that I had since taken them out.
> > I believe it does. I probably messed this up for you a while back when
> > I changed the node name logic in the driver. For compatibility, I
> > publish camera/image_raw relative to the driver node name.
> >
> > By contrast, the wge100 driver publishes image_raw relative to a node
> > handles set to:
> >
> >     camera_node_handle_(nh.resolveName("camera")),
> >     camera_node_handle_alt_(nh.resolveName("camera_alternate")),
> >
> > This may make a difference in how remapping works. I am still trying
> > to completely understand this stuff.
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Tully Foote
Systems Engineer
Willow Garage, Inc.
tfoote at willowgarage.com
(650) 475-2827
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