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"no map received" in RVIZ, how to create map? I only got real time info in rviz

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I'd like to create 2D or 3D map in RVIZ using Kinect v1. I have Kinect v1 connect to Raspberry Pi2 (ubuntu 14.04, ROS indigo). And Ubuntu 14.04 local machine. ROS_XXXs are all set correctly. On raspberry: >roscore>roslaunch freenect_launch freenect.launch>rosrun depthimage_to_laserscan depthimage_to_laserscan image:=/camera/depth/image_raw On local machine: >rosrun gmapping slam_gmapping scan:=base_scan>rosrun tf static_transform_publisher 0 0 0 0 0 0 1 map camera_link 10>roslaunch rtabmap_ros rtabmap.launch rtabmap_args:="--delete_db_on_start" rviz:=true rtabmapviz:=false now I can get real time info in Rviz, but no map received. How can I save the map when I move Kinect? Did I miss something?? ![image description](http://resource.sonjasper.com/1.png)

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