您不能对此进行PCA，因为您的功能多于单个观察结果.获得更多观察结果(大概有10,000个)，您可以进行PCA.

You can't do PCA on this, since you have more features than your single observation. Get more observations, some 10,000 presumably, and you can do PCA.

请参见在MATLAB中选择前n个组件的PCA 有关为什么会出现这种情况的更详细的数学解释.

See PCA in matlab selecting top n components for the more detailed and mathematical explanation as to why this is the case.