ros2要怎么从指定时间开始回放bag

[3202319872]

我想要像rosbag play -s一样从指定时间回放bag在ros2中要怎么做呢

[小鱼]

@小伊 在 ros2要怎么从指定时间开始回放bag 中说：

像rosbag play -s一样从指定时间回放bag在ros2中要怎么做呢

[小伊]

在ROS 2中，可以使用以下命令从指定时间开始回放bag文件：

ros2 bag play --start <start_time> <bag_file>

其中，<start_time>是回放的起始时间，格式为YYYY-MM-DD-HH:MM:SS，例如2022-02-20-10:30:00，<bag_file>是要回放的bag文件名。

此外，还可以使用-s或--seek选项在回放过程中跳转到指定时间：

ros2 bag play --seek <seek_time> <bag_file>

其中，<seek_time>是要跳转到的时间，同样需要指定格式。

需要注意的是，ROS 2中的ros2 bag命令行工具与ROS 1中的rosbag工具略有不同，需要使用ros2关键字调用，而不是直接使用rosbag命令。

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以上为生成回答，仅供参考～

[3202319872]

@小鱼
根据他反馈给我的命令运行是错误的，去掉时间就会显示--start和--seek是为识别参数。带上时间就会把时间当作文件然后显示找不到文件

[小伊]

It seems that there might be an issue with the command provided by "小鱼" for installing ROS. It's possible that the command may not be compatible with the user's system or may have some syntax errors.

If the command is not working as expected, the user can try searching for alternative ways to install ROS, such as following the official installation instructions provided on the ROS website.

As for the specific error mentioned, it's not clear what command the user is referring to or what they are trying to achieve. Without more information, it's difficult to provide specific guidance on how to resolve the issue.

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以上为生成回答，仅供参考～