Check a matrix for positive definitness
Estimate standardized regression coefficients for all variables
Convert a half-vector (vech) into a matrix.
Estimate leave-one-variable-out regressions
magRange
Magnify the range of a variable.
Religious beliefs and crime rates
Calculates a "residual-centered" interaction regression.
Minor revision of mvrnorm (from MASS) to facilitate replication
Draw a 3-D regression plot for two predictors from any linear or nonlinear lm or glm object
Find numeric columns, center them, re-name them, and join them with the original data.
Display pctable objects
A way of checking if a string is a valid file name.
Cheating and Looting in Japanese Electoral Politics
retrieves estimates of the coefficient of determination from a list of regressions
Extracts numeric variables and presents an alphabetized summary in
a workable format.
Prints out the contents of an object created by summarizeFactors
in the style of base::summary
Multi-collinearity diagnostics
Create a focal value vector.
Creates a publication quality result table for regression models.
outreg0 is the last version in the last development stream.
Extract presentation from a pctable object
Create a data frame suitable for estimating a model
Generates a data frame for regression analysis
Create a "raw" (UNTRANSFORMED) data frame equivalent to the input
data that would be required to fit the given model.
Calculate a predicted value matrix (fit, lwr, upr) for a
regression, either lm or glm, on either link or response scale.
Hypothesis tests for Simple Slopes Objects
Sorts numeric from factor variables and returns separate
summaries for those types of variables.
Calculates the "center" quantiles, always including the median, when n is odd.
Select most frequently occurring values from numeric or categorical variables.
Generates a data frame for regression analysis.
Convert the vech (column of strictly lower trianglar values from a matrix) into a correlation matrix.
makeVec for checking or creating vectors
Generic function for plotting regressions and interaction effects
Converts the R-square to the variance inflation factor
Calculates partial correlation coefficients after retrieving data matrix froma fitted regression model
Pad with 0's.
Select focal values from an observed variable.
Creates a cross tabulation with counts and percentages
Calculates the delta R-squares, also known as squared
semi-partial correlation coefficients.
Assists creation of predicted value curves for regression models.
print method for summary.pctable objects
Create correlation matrices.
Create predicted values after choosing values of predictors. Can
demonstrate marginal effects of the predictor variables.
Superimpose regression lines on a plotted plane
Create covariance matrix from correlation and standard deviation
information
Create a newdata frame for usage in predict methods
Plot testSlopes objects
perspEmpty
Central Tendency estimates for variables
formatter for merMod objects copied from lme4
Illustrate multicollinearity in regression, part 1.
Creates a publication quality result table for
regression models. Works with models fitted with lm, glm, as well
as lme4.
Extracts non-numeric variables, calculates summary information,
including entropy as a diversity indicator.
Convert LaTeX output from outreg to HTML markup
recode a factor by "combining" levels
Create sequences for plotting
Create Symmetric Matrices, possibly covariance or correlation matrices, or check a matrix for symmetry and serviceability.
meanCenter
Tabulates observed values and calculates entropy
Returns center values of x, the mean, mean-std.dev, mean+std.dev
Regression plots with predicted value lines, confidence intervals, color coded interactions
Miscellaneous regression functions