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How to read MDF Files into Matlab?

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I'm attempting to read MDF (.mf4) files into Matlab workspace. I'm using the following commands:
mdfObj = mdf('datafile.MF4');
data1 = read(mdfObj);
but get the following error:
Functionality is not implemented for the MDF file.
I have the Vehicle Network Toolbox installed which I think should allow for this read command.
Can you please advise?
Thanks,
Keith

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Urmila Rajpurohith
Urmila Rajpurohith 14 Nov 2019
The error you are encountering often occurs when the MDF file is not sorted. By applying a data sort to the file, it becomes readable.
You can use “mdfSort” function to sort the file and make the file readable.
mdfSort ('oldFile.mdf', 'newFile.mdf');
mdfObj = mdf('newFile.mdf');
data = read(mdfObj);

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