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,...
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(): print(" Topic: {}, Type: {}, MessageCoun...
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...
(bag_file,'r')asbag:info = bag.get_type_and_topic_info()print(info.topics)pcd_number = self.get_pcd_img_number(info, pcd_topic_list)img_number = self.get_pcd_img_number(info, img_topic_list)print(f"解析{bag_file.name}pcd总数:{pcd_number}图片总数:{img_number}")fortopic, msg,...
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) { ...
GetContextItems GetF1Kwd GetNextCtxBag GetNextCtxBagAttr GetPrevAttrCache IsF1Lookup IsIdleAvailable put_ApplicationContext RegisterItemProvider ResetNextCtxBagAttr SetSite SetTopicTypeFilter UnadviseContextItemEvent UnregisterItemProvider IVsMRESearchProvider IVsMRUItemsStore IVsMS...
type_hash: str def __init__(self, topic_type: str, encoding: str, encoded_message_definition: str, type_hash: str) -> None: ... class MetadataIo: def __init__(self) -> None: ... def deserialize_metadata(self, arg0: str) -> BagMetadata: ... def metadata_file_exists(self, ...
$ sudo apt-get install ffmpeg 2). 新建文件夹用于储存提取后的图片,并执行: $ rosrun image_view extract_images _sec_per_frame:=0.01 image:=<IMAGETOPICINBAGFILE> # <IMAGETOPICINBAGFILE> 为bag文件中储存图片的topic PS:如果输出的图片数量与rosbag info命令查询得到的数量不符,可以减少_sec_per_fr...
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 ...