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I tried rostopic echo /scan but there is just nothing, no message is catched

I tried rostopic echo /camera/depth/image_raw which is the "typical" topic subscribed by depthimage_to_laserscan and I get a normal output

I tried rostopic echo /scan but there is just nothing, no message is catched

I tried rostopic echo /camera/depth/image_raw which is the "typical" topic subscribed by depthimage_to_laserscan and I get a normal output

pierre@plev:~$ rostopic info /scan
Type: sensor_msgs/LaserScan

Publishers: 
 * /depthimage_to_laserscan (http://plev:50206/)

Subscribers: 
 * /amcl (http://plev:43533/)
 * /move_base (http://plev:58717/)
 * /rostopic_9936_1445030762925 (http://plev:53185/)

I tried rostopic rostopic echo /scan but there is just nothing, no message is catched

I tried rostopic echo /camera/depth/image_raw which is the "typical" topic subscribed by depthimage_to_laserscan and I get a normal output

I also tried:

pierre@plev:~$ rostopic info /scan
Type: sensor_msgs/LaserScan

Publishers: 
 * /depthimage_to_laserscan (http://plev:50206/)

Subscribers: 
 * /amcl (http://plev:43533/)
 * /move_base (http://plev:58717/)
 * /rostopic_9936_1445030762925 (http://plev:53185/)

I tried rostopic echo /scan but there is just nothing, no message is catched

I tried rostopic echo /camera/depth/image_raw which is the "typical" topic subscribed by depthimage_to_laserscan and I get a normal output

I also tried:tried rqt -> nodes and it seems that depthimage_to_laserscan isn't subscribing to any topic

I think that a parameter is missing in move_base.launch but I don't know what.

pierre@plev:~$ rostopic info /scan
Type: sensor_msgs/LaserScan

Publishers: 
 * /depthimage_to_laserscan (http://plev:50206/)

Subscribers: 
 * /amcl (http://plev:43533/)
 * /move_base (http://plev:58717/)
 * /rostopic_9936_1445030762925 (http://plev:53185/)
node name="depthimage_to_laserscan" pkg="depthimage_to_laserscan" type="depthimage_to_laserscan"

I tried rostopic echo /scan but there is just nothing, no message is catched

I tried rostopic echo /camera/depth/image_raw which is the "typical" topic subscribed by depthimage_to_laserscan and I get a normal output

I also tried rqt -> nodes and it seems Ok, rqt->nodes showed me that depthimage_to_laserscan isn't wasn't subscribing to any topic

I think that a parameter topic. The solution is missing in move_base.launch but I don't know what.to remap the topic it subscribes to.

node <node name="depthimage_to_laserscan" pkg="depthimage_to_laserscan" type="depthimage_to_laserscan"
type="depthimage_to_laserscan" > 
  <remap from="image" to="/camera/depth/image_raw"/>
</node>