使用message_filters 进行时间同步的一般步骤如下: 1.创建一个 message_filters::Subscriber 对象来监听需要同步的话题,并指定消息类型。 2.创建一个 message_filters::Cache 对象来管理接收到的消息,并指定缓存的大小和策略(例如 ApproximateTime 或 ExactTime)。 3.创建一个回调函数,用于处理同步后的消息。该回调函...
/opt/ros/noetic/include/message_filters/sync_policies/approximate_time.h:187:87: error: ‘value’ is not a member of ‘ros::message_traits::TimeStamp<rfid_reader::DataDev_<std::allocator<void>>, void>’187|previous_msg_time=mt::TimeStamp<typename mpl::at_c<Messages, i>::type>::valu...
message_filters::Subscriber<sensor_msgs::Image> img_sub(n, "/zed/zed_node/left/image_rect_color", 1);// topic1 输入 message_filters::Subscriber<sensor_msgs::PointCloud2> pointcloud_sub(n, "/rslidar_points", 1);// topic2 输入 message_filters::Synchronizer<testSyncPolicy> sync(testSync...
message_filters::Subscriber<sensor_msgs::PointCloud2> velodyne_sub(node,"/velodyne_points",1); typedef message_filters::sync_policies::ApproximateTime<sensor_msgs::PointCloud2, geometry_msgs::PoseStamped>approximate_policy; message_filters::Synchronizer<approximate_policy> sync(approximate_policy(10), ...
Python:callback(msg0.. msgN). The number of parameters is determined by the number of template arguments the class was created with. #include <message_filters/subscriber.h> #include <message_filters/time_synchronizer.h> #include <sensor_msgs/Image.h> ...
Python:callback(msg0.. msgN). The number of parameters is determined by the number of template arguments the class was created with. #include <message_filters/subscriber.h> #include <message_filters/time_synchronizer.h> #include <sensor_msgs/Image.h> #include <sensor_msgs/CameraInfo.h> usin...
3. message_filters.ApproximateTimeSynchronizer在ROS中的使用示例 以下是一个使用 ApproximateTimeSynchronizer 的简单示例,它同步来自两个不同话题 topic1 和topic2 的Int32 类型消息: python import rospy from message_filters import ApproximateTimeSynchronizer, Subscriber from std_msgs.msg import Int32 def call...
"filters": { "conditions": [ { "keyName": "Created_date", "condition": "gte", "keyValue": "={{ \n new Date(Date.now() - 86400000).toISOString().slice(0, 10)\n}}\n" } ] } }, "type": "n8n-nodes-base.supabaseTool", ...
A subscriber to a topic can receive a copy of each message sent to that topic. Subscriptions are named entities. Subscriptions are durable by default, but can be configured to expire and then be automatically deleted. Via the Java Message Service (JMS) API, Service Bus Premium also allows ...