如何在python中将二维数据帧转换为二维数组？

Question

I am working on a dataset and I found out the correlation between every pair of features. The 2D data frame looks like this

I have to iterate over all these values to select those values which are greater than some threshold to select important features.

I think array would be convenient to handle in this case instead. How to convert this into a 2D array?

It will look somewhat like this:

Answer 1

使用dataframe.values ：什么df.values基本上做的是，让你没有索引的原始NumPy的ndarray。