存.mat文件時出錯：Warning: Variable 'a' cannot be saved to a MAT-file whose version is older than 7.3.

存.mat文件時出現錯誤如下： matlab錯誤提示： Warning: Variable 'feature' cannot be saved to a MAT-file whose version is older than 7.3. To save this variable, use the -v7.3 switch. Skipping... 解決辦法： 打開matlab，preferenc

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