2020-12-14

运行之前的代码遇到的问题和解决办法

问题1：No module named 'rospkg'

先切换到python3(如果用python2就把3改成2)

alias python=python3
source ~/.bashrc

再安装rospkg

pip3 install rospkg

问题2：启动gazebo打不开模型

在主目录下ctrl+h，打开.gazebo，新建文件夹models，下载gazebo模型，复制粘贴到models文件夹下

 问题3：cannot launch node of type [usb_cam/usb_cam_node]: usb_cam

sudo apt-get install ros-melodic-usb-cam

问题4：cannot launch node of type [joint_state_publisher_gui/joint_state_publisher_gui]

sudo apt-get install ros-melodic-joint-state-publisher-gui

问题5：  Found unsuitable Qt version "5.9.5" from /home/zhw/anaconda3/bin/qmake,this code requires Qt 4.x

sudo apt-get install qt4-default

问题6：Could NOT find move_base_msgs (missing: move_base_msgs_DIR)

sudo apt-get install ros-melodic-move-base-msgs

问题7：gmapping功能包安装

sudo apt-get install ros-melodic-gmapping

问题8：[rospack] Error: package 'map_server' not found

sudo apt-get install ros-melodic-map-server

问题9：gazebo里面点左上角save world as来保存仿真环境࿰