Karel van de Plassche developed enhancements for the google-deepmind/torax repository, focusing on improving data visualization workflows in Python. He implemented a headless plotting capability by adding a silent-plot option to the plot_run function, enabling automated plotting without opening interactive windows. To ensure robustness, he generalized the plotting test suite to handle multiple data files and removed outdated NetCDF test data, which reduced CI flakiness and improved test reliability. His work leveraged skills in data analysis, data visualization, and unit testing, resulting in more stable and flexible production visualization pipelines. The depth of changes addressed both usability and maintainability.