Скачать или смотреть How to Display Float Values in a 2D Numpy Array Effectively

Learn how to ensure your 2D Numpy array displays float values correctly without losing precision. This guide explains step-by-step how to achieve this.
---
This video is based on the question https://stackoverflow.com/q/69385180/ asked by the user 'iswimshark' ( https://stackoverflow.com/u/17039181/ ) and on the answer https://stackoverflow.com/a/69385253/ provided by the user 'PumpkinQ' ( https://stackoverflow.com/u/12701774/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Printing a 2D numpy array not, showing float values

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Display Float Values in a 2D Numpy Array Effectively

Numpy is an excellent library for numerical computations in Python, often providing powerful tools for handling arrays. However, when working with 2D arrays that contain floating-point numbers, you might encounter a common issue: your array only displays whole numbers, losing important decimal information. If you're facing this issue, you're not alone. Let's dive into the problem and uncover a straightforward solution!

The Problem: Displays Only Whole Numbers

In Python, when you print a 2D Numpy array created with integer values, it typically shows only whole numbers. This can be problematic if you require precision in your calculations. For example, if you're performing mathematical operations that result in floating-point numbers, but they are displayed as integers, it can lead to confusion and inaccuracies in your data representation.

Example Scenario

Consider this snippet of code where a 2D Numpy array is generated:

[[See Video to Reveal this Text or Code Snippet]]

When executed, this code will display X without any decimal places, regardless of the float values that may have been calculated and stored within it.

The Solution: Specifying Data Type as Float

To resolve this issue, you can simply instruct Numpy to treat the array elements as floats. This can be achieved by specifying the dtype parameter while creating the array.

Here’s the Solution Step-by-Step:

Modify the Array Creation:
Change the array creation line in your code. Instead of this:

[[See Video to Reveal this Text or Code Snippet]]

Use this modified version:

[[See Video to Reveal this Text or Code Snippet]]

Print the Array:
Now, after making this change, when you print the array:

[[See Video to Reveal this Text or Code Snippet]]

It will display the values in the correct float format, preserving the precision you need.

Sample Code Implementation:

To give you clearer insight, here's how the modified code looks in its entirety:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By simply changing the dtype parameter while creating your Numpy array, you can retain the precision of your float values in 2D arrays when printed. This small tweak is essential for accurate data representation and can significantly aid in visualizing results accurately. Happy coding!