ros2 create_subscription是一个命令行工具,用于创建一个订阅节点,该节点可以订阅一个指定的ROS2话题,并在接收到消息时执行指定的回调函数。 使用ros2 create_subscription命令,开发者可以快速创建一个订阅节点,从而接收其他节点发布的消息。这个命令的基本语法如下: bash ros2 create_subscription [OPTIONS] PACKAGE_...
File "/home/cxw/dev_ws/install/learning_topic/lib/python3.10/site-packages/learning_topic/toEvo.py", line 20, in __init__ self.subscribe = self.create_subscription(Odometry,"odom",self.callback,qos_profile) File "/opt/ros/humble/local/lib/python3.10/dist-packages/rclpy/node.py", line ...
writer_->open("my_bag"); subscription_ = create_subscription<geometry_msgs::msg::Twist>( "/turtle1/cmd_vel", 10, std::bind(&SimpleBagRecorder::topic_callback, this, _1)); } private: void topic_callback(std::shared_ptr<rclcpp::SerializedMessage> msg) const { rclcpp::Time time_stam...
# 参数分别是:话题数据类型、话题名称、回调函数名称,队列长度 self.sub = self.create_subscription(String, "/topic_demo", self.sub_callback, 1) # 回调函数 def sub_callback(self, msg): print("recv:" + msg.data) def main(): rclpy.init() subscriber_demo = Topic_Subscriber("subscriber_no...
self.subscription = self.create_subscription( String, 'hello_world', self.listener_callback, 10) self.subscription # prevent unused variable warning def listener_callback(self, msg): self.get_logger().info('I heard: "%s"' % msg.data) ...
subscription_ = this->create_subscription<ars548_interface::msg::Num>( // CHANGE "topic", 10, std::bind(&MinimalSubscriber::topic_callback, this, _1)); } private: void topic_callback(const ars548_interface::msg::Num::SharedPtr msg) const // CHANGE ...
string.hpp"classSubscribe:publicrclcpp::Node{public:Subscribe(std::string name):Node(name){RCLCPP_INFO(this->get_logger(),"大家好,我是%s.",name.c_str());// 创建一个订阅者订阅话题subscribe_and_publish_subscribe_=this->create_subscription<std_msgs::msg::String>("subscribe_and_publish",10...
importrclpyfromrclpy.nodeimportNodefromstd_msgs.msgimportStringclassListener(Node):def__init__(self):super().__init__('listener')self.subscription=self.create_subscription(String,'chatter',self.listener_callback,10)deflistener_callback(self,msg):self.get_logger().info('I heard: "%s"'%msg.da...
订阅者节点的代码与发布者的代码几乎相同。订阅者节点使用几乎相同的参数调用构造函数创建订阅者。回忆一下在话题教程中提到的内容:发布者和订阅者使用的主题名称和消息类型必须匹配,它们之间才能进行通信。 self.subscription = self.create_subscription( String, ...
26 | selectPtSub_ = nh_->create_subscription<sensor_msgs::msg::PointCloud2>("/rviz_selected_points", 10, std::bind(&TeleopPanel::SelectPtSub, this, std::placeholders::_1)); | ^ // 报错二 play_panel.cpp:26:25: error: no matching member function for call to 'create_subscription'...