| check_wn_col | Check the Currently Set Wavenumber Column |
| CoHAspec | CoHAspec Dataset |
| demo_rolling_ball | Usage Example and Test |
| plot_rolling_ball | Plot Rolling Ball Results |
| rolling_ball | Rolling Ball Baseline Correction |
| rolling_ball_morphology | Enhanced Rolling Ball with Mathematical Morphology |
| set_spec_wn | Set the Default Wavenumber Column |
| smooth_baseline | Baseline Smoothing |
| spec_abs2trans | Convert Absorbance Data to Transmittance |
| spec_blc_rollingBall | Apply Rolling Ball Baseline Correction to Spectral Data |
| spec_bl_rollingBall | Extract Rolling Ball Baseline from Spectral Data |
| spec_diff | Apply Differentiation to Spectral Data |
| spec_filter | Filter spectral data by wavenumber range |
| spec_norm_01 | Normalize Spectral Data to the [0, 1] Range |
| spec_norm_minmax | Normalize Spectral Data to a Specified Range |
| spec_norm_var | Standardize Spectral Data to Unit Variance |
| spec_pca | Perform Principal Component Analysis (PCA) on Spectral Data |
| spec_pca_screeplot | Scree plot for PCA results |
| spec_pca_wn_contrib | Compute Wavenumber Contributions to Principal Components |
| spec_read | Read Spectral Data from Various File Formats |
| spec_select | Select Specific Columns in a Spectral Data Frame |
| spec_smartplot | Create a Custom Plot for Spectral Data |
| spec_smartplotly | Create an Interactive Plot for Spectral Data using Plotly |
| spec_smooth_avg | Apply Smoothing to Spectral Data Using a Moving Average |
| spec_smooth_sga | Apply Savitzky-Golay Smoothing to Spectral Data |
| spec_trans2abs | Convert Spectral Data from Transmittance to Absorbance |