Psychometric Functions from the Waller Lab

adfCor | Asymptotic Distribution-Free Covariance Matrix of... |

adfCov | Asymptotic Distribution-Free Covariance Matrix of Covariances |

BadRBY | Improper correlation matrix reported by Bentler and Yuan |

BadRJN | Improper R matrix reported by Joseph and Newman |

BadRKtB | Improper R matrix reported by Knol and ten Berge |

BadRLG | Improper R matrix reported by Lurie and Goldberg |

BadRRM | Improper R matrix reported by Rousseeuw and Molenberghs |

BiFAD | Bifactor Analysis via Direct Schmid Leiman Transformations |

bigen | Generate Correlated Binary Data |

corSample | Sample Correlation Matrices from a Population Correlation... |

corSmooth | Smooth a Non PD Correlation Matrix |

d2r | Convert Degrees to Radians |

eap | Compute eap trait estimates for FMP and FUP models |

eigGen | Generate eigenvalues for R matrices with underlying component... |

enhancement | Find OLS Regression Coefficients that Exhibit Enhancement |

erf | Utility fnc to compute the components for an empirical... |

faAlign | Align the columns of two factor loading matrices |

fals | Unweighted least squares factor analysis |

faMAP | Velicer's minimum partial correlation method for determining... |

faSort | Sort a factor loadings matrix |

FMP | Estimate the coefficients of a filtered monotonic polynomial... |

FMPMonotonicityCheck | Utility function for checking FMP monotonicity |

fungible | Generate Fungible Regression Weights |

fungibleExtrema | Locate Extrema of Fungible Regression Weights |

fungibleL | Generate Fungible Logistic Regression Weights |

fungibleR | Generate Fungible Correlation Matrices |

FUP | Estimate the coefficients of a filtered unconstrained... |

gen4PMData | Generate item response data for 1, 2, 3, or 4-parameter IRT... |

genCorr | Generate Correlation Matrices with User-Defined Eigenvalues |

genFMPData | Generate item response data for a filtered monotonic... |

HS9Var | 9 Variables from the Holzinger and Swineford (1939) Dataset |

irf | Plot item response functions for polynomial IRT models. |

itemDescriptives | Compute basic descriptives for binary-item analysis |

kurt | Calculate Univariate Kurtosis for a Vector or Matrix |

monte | Simulate Clustered Data with User-Defined Properties |

monte1 | Simulate Multivariate Non-normal Data by Vale & Maurelli... |

normalCor | Compute Normal-Theory Covariances for Correlations |

normF | Compute the Frobenius norm of a matrix |

plot.monte | Plot Method for Class Monte |

r2d | Convert Radians to Degrees |

rarc | Rotate Points on the Surface on an N-Dimensional Ellipsoid |

rcone | Generate a Cone of Regression Coefficient Vectors |

rcor | Generate Random PSD Correlation Matrices |

rellipsoid | Generate Uniformly Spaced OLS Regression Coefficients that... |

restScore | Plot an ERF using rest scores |

rGivens | Generate Correlation Matrices with Specified Eigenvalues |

rMAP | Generate Correlation Matrices with Specified Eigenvalues |

rmsd | Root Mean Squared Deviation of (A - B) |

RnpdMAP | Generate Random NPD R matrices from a user-supplied... |

seBeta | Standard Errors and CIs for Standardized Regression... |

seBetaCor | Standard Errors and CIs for Standardized Regression... |

seBetaFixed | Covariance Matrix and Standard Errors for Standardized... |

skew | Calculate Univariate Skewness for a Vector or Matrix |

smoothAPA | Smooth a NPD R matrix to PD using the Alternating Projection... |

smoothBY | Smooth an NPD R matrix to PD using the Bentler Yuan 2011... |

smoothKB | Smooth a Non PD Correlation Matrix |

smoothLG | Smooth NPD to Nearest PSD or PD Matrix |

summary.monte | Summary Method for an Object of Class Monte |

summary.monte1 | Summary Method for an Object of Class Monte1 |

svdNorm | Compute theta surrogates via normalized SVD scores |

tetcor | Compute ML Tetrachoric Correlations |

tetcorQuasi | Correlation between a Naturally and an Artificially... |

vcos | Compute the Cosine Between Two Vectors |

vnorm | Norm a Vector to Unit Length |

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