message: undid launchfile changes
diff: <launch>
  <arg name="play_bag" default="true" />
  - <arg name="bag_file" default="/home/z/Downloads/data.bag"/>
  + <arg name="bag_file" default="/path/to/your/file"/>
  + <arg name="voxel_size" default="0.05"/>
  <node name="player" pkg="rosbag" type="play" output="screen" args="-r 1.0 -s 15 -u 60 --clock $(arg bag_file)" if="$(arg play_bag)"/>
  <node name="voxblox_node" pkg="voxblox_ros" type="tsdf_server" output="screen" args="-alsologtostderr" clear_params="true">
  <remap from="pointcloud" to="/camera/depth_registered/points"/>
  - <param name="tsdf_voxel_size" value="0.05" />
  + <param name="tsdf_voxel_size" value="$(arg voxel_size)" />
  <param name="tsdf_voxels_per_side" value="16" />
  <param name="voxel_carving_enabled" value="true" />
  <param name="color_mode" value="color" />
  