PCA Error: 'n_components=20' Exceeds Dataset Feature Limit

This error message arises when attempting to perform Principal Component Analysis (PCA) with 'n_components' set to 20, while the dataset contains only one feature.

PCA is a dimensionality reduction technique aiming to transform data into a lower-dimensional space while retaining as much information as possible. The 'n_components' parameter specifies the desired number of dimensions in this reduced space.

The error indicates that with just one feature, the maximum number of components achievable is 1. Setting 'n_components' to 20 is therefore incompatible.

To address this error, either decrease 'n_components' to 1 or expand the dataset with additional features.