Cartographer（一）ubuntu系统Cartographer_ros配置与运行
0.参考资料与前言：
github仓库地址:
https://github.com/cartographer-project/cartographer_ros/tree/master
https://github.com/cartographer-project/cartographer_ros/tree/master
Catorgrapher_ros官方文档:
https://google-cartographer-ros.readthedocs.io/en/latest/compilation.htmlhttps://google-cartographer-ros.readthedocs.io/en/latest/compilation.html 硬件设备为ubuntu18与ros melodic，因为近几天移植到ubuntu16的工控机上，所以理论上也对ubuntu16有参考意义
一、编译与安装
（1）安装编译工具
kinetic与melodic相同：
sudo apt-get update
sudo apt-get install -y python-wstool python-rosdep ninja-build stowros-noetic命令有不同 ：
sudo apt-get update
sudo apt-get install -y python3-wstool python3-rosdep ninja-build stow
（注：上图中google源没有成功更新可以不用管，不到万不得已不要将此源删除）
（2）配置工作空间
我的工作空间取名为cartographer_ws，可以取名为其他
mkdir cartographer_ws
cd cartographer_ws
wstool init src
wstool merge -t src https://raw.githubusercontent.com/cartographer-project/cartographer_ros/master/cartographer_ros.rosinstall
wstool update -t src
##备注：这里使用了科学上网，不使用的话可以参考：
https://blog.csdn.net/moshuilangting/article/details/107638034
（3）安装 cartographer_ros依赖
参考Cartographer_ros官方文档，执行以下步骤：
sudo rosdep init
#####上面这句如果安装过ros会报错，但不影响
rosdep update
rosdep install --from-paths src --ignore-src --rosdistro=${ROS_DISTRO} -y（4）安装protobuf
在ubuntu18和ubuntu20中，好像时ros自带的有protobuf，可以使用下面的命令进行验证：
protoc --versionubuntu16.04不自带protobuf，需要额外安装，安装步骤如下：
cd cartographer_ws
./src/cartographer/scripts/install_proto3.sh（5）安装abseil-cpp
ubuntu16、18、20都需要安装abseil-cpp：
cd cartographer_ws
./src/cartographer/scripts/install_abseil.sh在官方文档中，说可能需要卸载ROS正在使用的abseil-cpp，命令如下，但我没有卸载，没有影响，说明及命令如下：
###Due to conflicting versions you might need to uninstall the ROS abseil-cpp using
sudo apt-get remove ros-${ROS_DISTRO}-abseil-cpp二、报错解决
使用下面的命令编译：
catkin_make_isolated --install --use-ninja（1）pcl_conversions内容问题？？？----此步骤可先不执行
/opt/ros/melodic/include/pcl_conversions/pcl_conversions.h: In function ‘void pcl_conversions::fromPCL(const pcl::Vertices&, pcl_msgs::Vertices&)’:
/opt/ros/melodic/include/pcl_conversions/pcl_conversions.h:356:30: error: no match for ‘operator=’ (operand types are ‘pcl_msgs::Vertices_ >::_vertices_type {aka std::vector}’ and ‘const Indices {aka const std::vector}’)
vert.vertices = pcl_vert.vertices;
^~~~~~~~
In file included from /usr/include/c++/7/vector:69:0,
from /home/elfoot/unmanned_system_2021/catographer_ws2/install_isolated/include/cartographer/io/image.h:21,
from /home/elfoot/unmanned_system_2021/catographer_ws2/install_isolated/include/cartographer/io/submap_painter.h:22,
from /home/elfoot/unmanned_system_2021/catographer_ws2/src/cartographer_ros/cartographer_ros/cartographer_ros/msg_conversion.h:21,
from /home/elfoot/unmanned_system_2021/catographer_ws2/src/cartographer_ros/cartographer_ros/cartographer_ros/msg_conversion.cc:17:
/usr/include/c++/7/bits/vector.tcc:179:5: note: candidate: std::vector<_Tp, _Alloc>& std::vector<_Tp, _Alloc>::operator=(const std::vector<_Tp, _Alloc>&) [with _Tp = unsigned int; _Alloc = std::allocator]
vector<_Tp, _Alloc>::
^~~~~~~~~~~~~~~~~~~
######省略
/usr/include/c++/7/bits/stl_vector.h:1229:7: note: no known conversion for argument 1 from ‘pcl_msgs::Vertices_ >::_vertices_type {aka std::vector}’ to ‘std::vector&’
[32/43] Building CXX object CMakeFiles/cartographer_ros.dir/cartographer_ros/node.cc.o
ninja: build stopped: subcommand failed.
<== Failed to process package 'cartographer_ros':
Command '['/home/elfoot/unmanned_system_2021/catographer_ws2/install_isolated/env.sh', 'ninja', '-j20', '-l20']' returned non-zero exit status 1
Reproduce this error by running:
==> cd /home/elfoot/unmanned_system_2021/catographer_ws2/build_isolated/cartographer_ros && /home/elfoot/unmanned_system_2021/catographer_ws2/install_isolated/env.sh ninja -j20 -l20
Command failed, exiting.
编译时第一个报错如上，好像是pcl_conversions的问题；参考博客：https://blog.csdn.net/weixin_46181372/article/details/111130390https://blog.csdn.net/weixin_46181372/article/details/111130390
对/opt/ros/melodic/include/pcl_msgs/Vertices.h进行sudo权限修改，因为Vertices.h文件中本来就是uint32_t，而上述博客要改为uint32_t；于是抱着试一试的态度，将uint32_t改为int32_t
//typedef std::vector::other > _vertices_type;
//_vertices_type vertices;
typedef std::vector::other > _vertices_type;
_vertices_type vertices; 删除编译得到的build_isolated、devel_isolated、install_isolated文件，重新运行编译，编译通过：
catkin_make_isolated --install --use-ninja（2）运行demo报错
下载demo包,运行
wget -P ~/Downloads https://storage.googleapis.com/cartographer-public-data/bags/backpack_2d/cartographer_paper_deutsches_museum.bag
source install_isolated setup.bash
roslaunch cartographer_ros demo_backpack_2d.launch bag_filename:=${HOME}/Downloads/cartographer_paper_deutsches_museum.bagroslaunch后报错如下：
/home/elfoot/unmanned_system_2021/catographer_ws/install_isolated/lib/cartographer_ros/cartographer_node: error while loading shared libraries: libpcl_common.so.1.11: cannot open shared object file: No such file or directory
process[cartographer_occupancy_grid_node-4]: started with pid [31543]
/home/elfoot/unmanned_system_2021/catographer_ws/install_isolated/lib/cartographer_ros/cartographer_occupancy_grid_node: error while loading shared libraries: libpcl_common.so.1.11: cannot open shared object file: No such file or directory
process[rviz-5]: started with pid [31549]
[cartographer_node-3] process has died [pid 31542, exit code 127, cmd /home/elfoot/unmanned_system_2021/catographer_ws/install_isolated/lib/cartographer_ros/cartographer_node -configuration_directory /home/elfoot/unmanned_system_2021/catographer_ws/install_isolated/share/cartographer_ros/configuration_files -configuration_basename backpack_2d.lua echoes:=horizontal_laser_2d __name:=cartographer_node __log:=/home/elfoot/.ros/log/b3644844-6a44-11ec-bb48-08beac26819a/cartographer_node-3.log].
log file: /home/elfoot/.ros/log/b3644844-6a44-11ec-bb48-08beac26819a/cartographer_node-3*.log
[cartographer_occupancy_grid_node-4] process has died [pid 31543, exit code 127, cmd /home/elfoot/unmanned_system_2021/catographer_ws/install_isolated/lib/cartographer_ros/cartographer_occupancy_grid_node -resolution 0.05 __name:=cartographer_occupancy_grid_node __log:=/home/elfoot/.ros/log/b3644844-6a44-11ec-bb48-08beac26819a/cartographer_occupancy_grid_node-4.log].
log file: /home/elfoot/.ros/log/b3644844-6a44-11ec-bb48-08beac26819a/cartographer_occupancy_grid_node-4*.log
process[playbag-6]: started with pid [31551]
[ERROR] [1640960384.918870492]: PluginlibFactory: The plugin for class 'Submaps' failed to load. Error: Failed to load library /home/elfoot/unmanned_system_2021/catographer_ws/install_isolated/lib//libcartographer_rviz.so. Make sure that you are calling the PLUGINLIB_EXPORT_CLASS macro in the library code, and that names are consistent between this macro and your XML. Error string: Could not load library (Poco exception = libpcl_common.so.1.11: 无法打开共享对象文件: 没有那个文件或目录)
我giao，cartographer_ros这个包生成的程序居然找的pcl为pcl-1.11,并且没有找到libpcl_common.so.1.11；我吐了，怎么能找到pcl-1.11........
后来发现ros-melodic自带pcl-1.11,于是在cartographer_ros的CMakeLists.txt文件中进行修改，修改如下：
gedit xxx/catographer_ws/src/cartographer_ros/cartographer_ros/CMakeLists.txt添加，具体位置如下图：
set(PCL_DIR "/usr/share/pcl-1.8")
（3）最终编译
接着（2）， 删除第二次编译得到的build_isolated、devel_isolated、install_isolated文件，重新运行编译：
catkin_make_isolated --install --use-ninja会发现出现与（1）中相似的错误：
最后挣扎以下，把 Vertices.h文件改回来
typedef std::vector::other > _vertices_type;
_vertices_type vertices;
//typedef std::vector::other > _vertices_type;
//_vertices_type vertices; 继续重新编译，这次编译可以成功运行
三、成功运行
（1）2D
source install_isolated/setup.bash
roslaunch cartographer_ros demo_backpack_2d.launch bag_filename:=${HOME}/Downloads/cartographer_paper_deutsches_museum.bag
#####bag包为2D的，前面二（2）已经下载了
#####更多到官方文档：https://google-cartographer-ros.readthedocs.io/en/latest/demos.html
（2）3D包
wget -P ~/Downloads https://storage.googleapis.com/cartographer-public-data/bags/backpack_3d/with_intensities/b3-2016-04-05-14-14-00.bag
roslaunch cartographer_ros demo_backpack_3d.launch bag_filename:=${HOME}/Downloads/b3-2016-04-05-14-14-00.bag
#####此为3D的包四、致谢
实验室张同学（男）
在宿舍等我的马同学、巴同学、林同学，希望没把我门外
@meng