info = bag_data.get_type_and_topic_info() print(info) 1. 2. 如图显示感知topic消息数350,帧率10Hz 2. 读取特定topic的数据 如果不给定topic,会遍历所有的topic 查看topic的方式:方式1如上;方式2 rosbag info xxx.bag;方式3 通过read_messages()返回值 read_messages()每次迭代返回3个值:topic, msg,...
topic_filters = ['/chatter', '/number'] msg_types, topics = bag.get_type_and_topic_info(topic_filters) print("Message Types:") for type_name, md5_hash in msg_types.items(): print(f" {type_name}: {md5_hash}") print("Topics:") for type_name, topic_info in topics.items(): ...
topics = bag.get_type_and_topic_info().topicsiftopicnotintopics:raiseValueError("The topic with name %s was not found in bag %s"% (topic, path_to_bag))fortopic, msg, tinbag.read_messages(topics=[topic]): time = msg.header.stamp.secs +1e-9* msg.header.stamp.nsecs self.times.appen...
rostopic list -v 4.需要将.bag记录的图像数据输出为图片或视频时候,首先创建文件 export.luach 并写入以下内容 <launch> <node pkg="rosbag" type="play" name="rosbag" args="-d 2 $(find image_view)/test.bag"/> <node name="extract" pkg="image_view" type="extract_images" respawn="false"...
Get bagselect2 = select(bagselect,'Time',... [bagselect.StartTime bagselect.StartTime + 1],'Topic','/odom'); Display rosbag Information from File Copy Code Copy Command To view information about a rosbag log file, use rosbag info filename, where filename is a rosbag (.bag) file...
Select a subset of the messages, filtered by time and topic. bagselect2 = select(bagselect,'Time',...[bagselect.StartTime bagselect.StartTime + 1],'Topic','/odom'); Display rosbag Information from File To view information about a rosbag log file, userosbag infofilename,wherefilename...
ros2 topic echo /turtle1/cmd_vel 1. 现在,回到 rqt_graph and 取消选择 theDebugbox. /_ros2cll_29047是由我们刚刚运行的echo创建的节点(数字会改变)。现在,您可以看到发布者正在通过cmd_vel主题发布数据,并且订阅了两个订阅者。 5、 ros2 topic info ...
booltopic_available_for_recording(conststd::string & topic_name) { boolavailable_for_recording =false; autotopics_to_subscribe =this->get_requested_or_available_topics(); for(constauto& topic_and_type : topics_to_subscribe) { if(topic_and_type.first== topic_name) { ...
rosbag record /topic1 /topic2 名前を指定して特定のROSトピックを取得できます。 rosbag record -e "/tf.*|/cmd_vel" 正規表現でマッチングしたものを記録します。例えば "/tf.*"は/tfと/tf_staticを記録 "/group/.*"は/group/topic1と/group/topic2のように、そのネームスペース以下...
;/rect_color_raw"/> </node> </launch>; 其中标红两处根据自己实际情况修改,1.为.bag文件路径,2.为待提取的topic,具体写什么,使用rosbaginfo**.bag来查看其中的topic,对应选择。 写好后,执行命令roslaunchexport.launch如下图所示,正在提取: 结束标志: 所提取 ...