I am trying to using laser scan data for building a map and use this map for my navigation . so i follow the wiki tutorials link text successful build the map map.yaml and map.pgm .i copy both of them to home/catkinws/src/rbx1/rbx1nav/maps (where i store the map). and use abotix & rbx1 package for simulator robot navigation (i used to simulator navigation in rviz successful.with the default map testmap.yaml under the floder home/catkinws/src/rbx1/rbx1nav/maps).but when i change the map to map.yaml the term report the error:std::badalloc process has died, exit code -6" [closed]. i can see the map(map.yaml) in rviz but can't set the 2d nav goal in rviz ,aka,the robot model doesn't move . and i find that the test_map.pgm 's size is 356kb and map.pgm 's size is about 15mb!! does anyone know how can i use the map i built for nav . help me plz .thx ~