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IMU GPS fusion for interial navigation example error - quadcopter error

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Michael Barron
Michael Barron on 2 Apr 2021
Commented: Michael Barron on 16 Apr 2021
I keep getting this error when I run the IMU GPS fusion for interial navigation example and I have not altered the code from the Matlab example webpage (https://www.mathworks.com/help/fusion/ug/imu-and-gps-fusion-for-inertial-navigation.html#IMUandGPSFusionExample-3). Any clue what is going on?
"IMUandGPSFusionforInertialNavigationexample
Error using load
Unable to read file 'LoggedQuadcopter.mattrajData'. No such file or directory.
Error in IMUandGPSFusionforInertialNavigationexample (line 20)
load LoggedQuadcopter.mattrajData;"

Answers (3)

William Rose
William Rose on 2 Apr 2021
The code cannot find file LoggedQuadcopter.mattrajData. Make sure you have tthe file and make sure it is in a directory that is on the Matlab path. You can add directories to the current path by clicking on the "Set Path" buttn in the "Environment" section at the top of the main Matlab window. See screenshot below.

Elad Kivelevitch
Elad Kivelevitch on 2 Apr 2021
Michael,
Please use the "open example" button from the documentation or in your MATLAB command prompt type:
>>openExample('shared_positioning/IMUandGPSFusionExample')
And hit enter.
This will provide all the necessary files to run the example in a folder and will cd to that folder.
Examples have data files and other helpers that are not on the general MATLAB path.
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Elad Kivelevitch
Elad Kivelevitch on 16 Apr 2021
Based on the screenshot above, you are not in the example path.
Please use the command:
openExample('shared_positioning/IMUandGPSFusionExample')
This will:
  1. Create a folder for the example on your local drive.
  2. CD to the created folder.
  3. Copy all the necessary files to that folder.
These example files are not on the regular MATLAB path that's why you must be in the same folder that they get copy to or use addpath to add the path to that folder

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