get_topic_names_and_types(); 函数定义 std::map<std::string, std::vector<std::string> > rclcpp::Node::get_topic_names_and_types ( ) const 函数功能 用于获取ROS 2系统中所有现有话题的名称及其类型的映射关系。函数返回一个映射(map),其中键是话题的名称,值是与该话题关联的消息类型的列表。
rclcpp::Node::get_graph_event() rclcpp::Node::wait_for_graph_change() rclcpp::Event List topic names and types: rclcpp::Node::get_topic_names_and_types() Get the number of publishers or subscribers on a topic: rclcpp::Node::count_publishers() rclcpp::Node::count_subscribers() And com...
I asked on ros answers, but did not get anywhere. The demo you posted is ALMOST what I want -- in that code, you know the data type is going to be std_msgs::msg::String, but what if you only had the message type as a string from node.get_topic_names_and_types()? Can you ...
Also, ROS1's get_published_topics returned [[str, str]], but ROS2's get_topic_names_and_types returns a List[Tuple[str, List[str]]]. As we don't support multiple types per topic, this PR adds a warning message and maintains the original type subscribed....
ros2的服务和restful、grpc等服务是完全类似的,就是一个服务端,一个客户端。、 和topic主题订阅机制不同,service主要是针对一问一答类的场景 先上hello world级代码,计算加法 首先是server端: #!/usr/bin/env python3 # -*- coding: utf-8 -*- ...
In the example we’re using, we are using 3 different names for:file: my_program.py node: my_node executable: minimal_nodeYou can choose to use a different name for the file, node, and executable. You can also choose to use the same name for the 3 of them. But make sure you ...
we can benefit from ongoing improvements that are made by others to those libraries; and we can point to existing production systems that already rely on those libraries when people ask us whether ROS is “ready for prime time”. API更改 API changes ...
topicList = ros2("topic","list") lists topic names with registered publishers or subscribers on the ROS 2 network. example serviceList = ros2("service","list") lists service names that are registered on the ROS 2 network through either servers or clients. serviceTypes = ros2("service",...
The same is the case for the request and response parts of services. In ROS 2 the generated code uses separate namespaces to guarantee it is collision-free. Python中的名称相同 Same names in Python 生成的消息和服务的Python代码当前在ROS 1和ROS 2中使用相同的模块和类名。因此,它们不能在单个...
# ekf_localization_node and ukf_localization_node are not concerned with the earth frame. # Here is how to use the following settings: # 1. Set the map_frame, odom_frame, and base_link frames to the appropriate frame names for your system. ...