# What's New in *playNano* 0.2.2

**Release date:** 2025-11-07

This release includes several important bug fixes and improvements to data handling and visualization.

## Fixed

- GIF Export Normalization: Resolved a RuntimeWarning caused by invalid value casting during Z-scaling. The
  normalization step now safely handles NaN, inf, and out-of-range values.
- Feature Flattening Centroid Mapping: Corrected centroid_x and centroid_y assignment from (row, col) to (x, y)
  format, ensuring accurate coordinate mapping for plotting and analysis.
- Clear Step Data Corruption: Fixed a bug where the clear processing step unintentionally replaced stack.data with
  an uninitialized array, leading to corrupted Z-values. It now correctly clears only the mask.

## Changed

- Normalization logic in GIF export now uses np.nan_to_num and np.clip to ensure all values are within the valid
  range before casting to np.uint8.
- Centroid assignment updated to:
  - `centroid_x = centroid[1] (column -> x)`
  - `centroid_y = centroid[0] (row -> y)`

## Added

- Safe normalization logic in create_gif_with_scale_and_timestamp for robust GIF frame generation.
- Pytest coverage for:
  - Centroid coordinate mapping
  - Autodetection of object key (tracks vs clusters)
  - Handling of out-of-range indices
  - Column presence