rosbag命令

需求

按照文件夹 1， 2，3，的顺序依次播放文件夹中的record.bag文

for ((n=0; n<=61; n++)); do rosbag play "commonName_$n/record.bag"; done

1：rosbag查看某个topic的频率

2：rosbag修改某个topic的播放频率

rosbag play -r 2 <bag>

以2hz的频率播放bag包

录制bag包后可能没有正确结束掉程序，回放出现错误：

[ INFO] [1603677455.288200829]: Opening fuse_2020-10-24-18-01-07.bag

[FATAL] [1603677455.288476478]: Error reading from file: wanted 4 bytes, read 0 bytes

rosbag reindex xxx-xxx-xxx.bag