Issue with readMessages Vector 3

XPX Labs

2020 8 30

0 个回答

5 次查看（30 天）

0 个投票

Having an issue using readMessages for a rosbag file:

>> bag = rosbag('tb1.bag')
bag = 
  BagSelection with properties:
           FilePath: 'C:\Users\xpxla\Documents\MATLAB\TurtleBot\tb1.bag'
          StartTime: 1.5988e+09
            EndTime: 1.5988e+09
        NumMessages: 23454
    AvailableTopics: [12×3 table]
    AvailableFrames: {2×1 cell}
        MessageList: [23454×4 table]
>> velSel = select(bag, 'Topic','/cmd_vel')
velSel = 
  BagSelection with properties:
           FilePath: 'C:\Users\xpxla\Documents\MATLAB\TurtleBot\tb1.bag'
          StartTime: 1.5988e+09
            EndTime: 1.5988e+09
        NumMessages: 43
    AvailableTopics: [1×3 table]
    AvailableFrames: {2×1 cell}
        MessageList: [43×4 table]
>> msgStructs = readMessages(velSel,'DataFormat','struct')
No definition for Vector3
Message def:
# This expresses velocity in free space broken into its linear and angular parts.
Vector3  linear
Vector3  angular