Introduction | 📂 Read data from file | read_mnirs() | Example data files | 📊 Plot mnirs data | plot.mnirs | 🔍 Metadata stored in mnirs data frames | ⏱️ Resample data | resample_mnirs() | Use resample_mnirs() to smooth over irregular or skipped samples | 🧹 Replace local outliers, invalid values, and missing values | replace_mnirs() | 📈 Digital filtering | Choosing a digital filter | filter_mnirs() | Smoothing-spline | Butterworth digital filter | Moving average | Apply the filter | ⚖️ Shift and rescale data | shift_mnirs() | {tidyverse}-style channel name specification | rescale_mnirs() | 🔀 Pipe-friendly functions | 🧮 Interval extraction | extract_intervals() | Conclusion