| ar2qspec | Quantile Spectrum from AR Model of Quantile Series |
| qacf | Quantile Autocovariance Function (QACF) |
| qdft | Quantile Discrete Fourier Transform (QDFT) |
| qdft2qacf | Quantile Autocovariance Function (QACF) |
| qdft2qper | Quantile Periodogram and Cross-Periodogram (QPER) |
| qdft2qser | Quantile Series (QSER) |
| qfa.plot | Quantile-Frequency Plot |
| qkl.divergence | Kullback-Leibler Divergence of Quantile Spectral Estimate |
| qper | Quantile Periodogram and Cross-Periodogram (QPER) |
| qper2 | Quantile Periodogram Type II (QPER2) |
| qser | Quantile Series (QSER) |
| qser2ar | Autoregression (AR) Model of Quantile Series |
| qser2sar | Spline Autoregression (SAR) Model of Quantile Series |
| qsmooth.qdft | Quantile Smoothing of Quantile Discrete Fourier Transform |
| qsmooth.qper | Quantile Smoothing of Quantile Periodogram or Spectral Estimate |
| qspec.ar | Autoregression (AR) Estimator of Quantile Spectrum |
| qspec.lw | Lag-Window (LW) Estimator of Quantile Spectrum |
| qspec.lwqs | Lag-Window-Quantile-Smoothing (LWQS) Estimator of Quantile Spectrum |
| qspec.qslw | Quantile-Smoothing-Lag-Window (QSLW) Estimator of Quantile Spectrum |
| qspec.sar | Spline Autoregression (SAR) Estimator of Quantile Spectrum |
| qspec.sqrlw | Spline-Quantile-Regression-Lag-Window (SQRLW) Estimator of Quantile Spectrum |
| qspec2qcoh | Quantile Coherence Spectrum |
| sar.eq.bootstrap | Bootstrap Simulation of SAR Coefficients for Testing Equality of Granger-Causality in Two Samples |
| sar.eq.test | Wald Test and Confidence Band for Equality of SAR-Based Granger-Causality in Two Samples |
| sar.gc.bootstrap | Bootstrap Simulation of SAR Coefficients for Granger-Causality Analysis |
| sar.gc.coef | Extraction of SAR Coefficients for Granger-Causality Analysis |
| sar.gc.test | Wald Test and Confidence Band for SAR-Based Granger-Causality Analysis |
| sqdft | Spline Quantile Discrete Fourier Transform (SQDFT) |
| sqr.fit | Spline Quantile Regression (SQR) |
| tqr.fit | Trigonometric Quantile Regression (TQR) |
| tsqr.fit | Trigonometric Spline Quantile Regression (TSQR) |