adiftools release v0.1.7

Functions

• Read adif file into Pandas DataFrame.
• Generate basic Matplotlib plots from adif data.
• Utility tool to calculate Grid Locator from/to geographic coordinate.

Performance Improvements

• Major performance optimization in ADIFParser.read_adi() method
  • Issue: The original implementation used inefficient DataFrame merging operations that caused O(n²) complexity, making it extremely slow for large ADIF files with many records.
  • Solution: Replaced the inefficient approach with a list accumulation method that builds the DataFrame once at the end.
  • Performance gain:
    • Time complexity improved from O(n²) to O(n)
    • Expected 10-50x speed improvement for files with 10,000+ records
    • Reduced memory usage by eliminating intermediate DataFrame duplications
  • Technical details:
    • Removed pd.merge() operations in the processing loop
    • Implemented list-based record accumulation
    • Single DataFrame construction at the end of processing
    • Pre-compiled regex pattern for faster parsing

Install

adiftools can now officially pip install from PyPI. If you have already installed a previous version, please update it with the following command All previous functions can still be used with this update.

pip install adiftools

pip install -U adiftools

• When you got an error from subprocess, try to install wheel by pip install wheel command

Other

• Please report any issues with the release on the adiftools issue tracker.
• 日本語での説明はJS2IIUのブログをご覧ください：アマチュア無線局JS2IIU

Thank you, JS2IIU