How to build a map on rviz from laser scan

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thank you for the tip! So, should I use the "use without odom frame" option as specified in the tutorial? How do I have to manage the laser tf and frame?

That is the cool part about Hector mapping, no odom required. As to managing the laser tf: http://wiki.ros.org/laser_drivers . You're going to have to sit down and do some reading.

I tried to follow the tutorial, I launched roslaunch hector_slam_launch tutorial.launch and in RVIZ, I select /laser as fixed frame in order to see laser data on the map but all points are referred to laser frame and so I cant build the map if I move the laser.

I get this error: No tf data. Actual error: Fixed Frame [laser] does not exist. If I specify /map as static frame, then the laser values disappear from the grid. Can you help me to solve this problem? In map it says: No transform from [map] to [laser]

I test the code is very excellent. but as a fresh ,I am not know that how to save the image ? I use the command rosrun map_server map_saver -f my_map but I only get the wait without end, I use Ctrl+Alt + c to shut down the terminal, but I can not get anyting. I need help to solve the quenstion

if node "hector_trajectory_server" is running, you can use this command to save tiff map

rostopic pub syscommand std_msgs/String "savegeotiff"

for more details follow this tutorial last step is for saving map.