将 .mat 转换为 csv 文件导致错误：matlab

Question

I need to convert a .mat file to csv so that it can be converted to yaml. I am following this question: http://in.mathworks.com/matlabcentral/answers/195151-how-to-convert-a-mat-file-into-a-csv-file

But after writing those commands matlab is giving this error:

??? Reference to non-existent field 'M'.

These are the commands I entered:

>> FileData = load ('C:\Users\cortana\Desktop\model3Ddlib.mat');
>> csvwrite ('C:\Users\cortana\Desktop\model3Ddlib.csv', FileData.M);

Why is this error coming up and what should I do to remove it?

Answer 1

FileData is an struct with the stored .mat variables as fields.

Your .mat doesn't contain an M variable...

After loading the .mat write FileData. and let autocomplete show you the available fields, or execute fieldnames(FileData)

then export to CSV as:

csvwrite ('C:\Users\cortana\Desktop\model3Ddlib.csv', FileData.<your_field_here>);