完美解决：ERROR: the following packages/stacks could not have their rosdep keys resolvedto system depend

相信很多初学者一直被

rosdep install --from-paths src --ignore-src --rosdistro=kinetic -y

这个代码搞得很头疼

没错。。。那个人就是我，经过我找了一个晚上的资料，终于找到了完美解决的办法

方法一：（大概率行）

安装cartographer步骤及问题解决_fanshuaifang的博客-CSDN博客

上面这解决办法是我一个晚上找到，简单，快捷，不过不知道会不会有啥错

方法二：（完美解决）

这个方法是我费尽心思解决的（网上好像没有找到有这个方法？？？）

开讲：

ERROR: the following packages/stacks could not have their rosdep keys resolved
to system dependencies:
robot_sim_demo: Cannot locate rosdep definition for 【yocs_cmd_vel_mux】
navigation_sim_demo: Cannot locate rosdep definition for 【dwa_local_planner】
slam_sim_demo: Cannot locate rosdep definition for 【hector_mapping】

比如报了上面这个错误;

其实就是缺少依赖，安装就好。

第一步，你要确定你下了什么版本的ROS,比如kinetic，melodic，noetic。。。

第二步，在终端输入

sudo apt-get install ros-你的ROS版本-你缺少的东西

比如我现在ROS版本是kinetic

根据

robot_sim_demo: Cannot locate rosdep definition for 【yocs_cmd_vel_mux】
navigation_sim_demo: Cannot locate rosdep definition for 【dwa_local_planner】
slam_sim_demo: Cannot locate rosdep definition for 【hector_mapping】

这个，发现我缺少了yocs_cmd_vel_mux，dwa_local_planner，hector_mapping

然后我就可以在终端输

sudo apt-get install ros-kinetic-yocs-cmd-vel-mux ros-kinetic-dwa-local-planner ros-kinetic-hector-mapping

然后发现还是缺少了一些东西，然后你继续按上面的弄，大概两三分钟就可以了

注意：如果发现无法定位软件包，看看是不是 ”_“没有写成”-“

缺少啥你就补啥

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