Possible further improvements from codereview2

[LKKTWH]

For the functions and usability:
Core functions for parallel coordinate plots have been implemented, like multi-dimensional data visualization, normalization of the data, error handling for invalid inputs, etc. For further improvement, features like ‘axis reordering’, ‘brushing and linking’ could be added & axis can be scaled.

For documentation:
Uage examples are documented. Error messages are clear. But the architecture overview is missing. Tutorial guidance is limited. More examples can be added for advanced use.

For code structure: some functions can be split into smaller units. And logging function can be implemented.

For tests: the tests are comprehensive covering main functionality, edge cases, and validating input datasets, etc. But for large datasets, the stress test cases are not enough. Maybe also more benchmark comparisons.

For performance: consider pre-allocating arrays, parallel processing for larger datasets, and catching normalized values.