@range Vector of sequential integers.

@rank Rank of a matrix.

@ranks Ranking of values.

@rapplyranks Reorder the columns of a matrix using a vector of ranks.

@rate Discount rate required for annuity to yield given present value.

@rbeta Beta distribution random draw.

@rbinom Binomial distribution random draw.

@rchisq Chi-square distribution random draw.

@recode Recode value by condition.

@regress Perform an OLS regression on the first column of a matrix versus the remaining columns.

@replace Replace substring in string.

@resample Randomly draw from the rows of the matrix.

@rexp Exponential distribution random draw.

@rextreme Extreme value (Type I-minimum) distribution random draw.

@rfdist F-distribution random draw.

@rfirst First non-missing value in rows of group object.

@rgamma Gamma distribution random draw.

@rged Generalized error distribution random draw.

@rifirst Indices of first non-missing value in rows of group object.

@right Right substring of string.

@rilast Indices of last non-missing value in rows of group object.

@rimax Indices of row maximums of group object.

@rimin Indices of row minimums of group object.

@rinstr Find substring position in string.

@riwish Inverse Wishart random draws.

@rlaplace Laplace distribution random draw.

@rlast Last non-missing values in rows of group object.

@rlogistic Logistic distribution random draw.

@rlognorm Log normal distribution random draw.

@rmax Row maximums of group object.

@rmean Row means of group object.

@rmedian Row medians of group object.

@rmin Row minimums of group object.

@rmse Root of the mean of square error (difference) between series.

@rmvnorm Multivariate normal random draws.

@rnas Number of missing observations in row of group object.

@rnegbin Negative binomial distribution random draw.

@rnorm Standard normal distribution random draw.

@robs Number of non-missing observations in row of group object.

@round Nearest integer, or value at given precision.

@rowextract Extract rowvector from matrix object.

@rowranks Matrix where each row contains ranks of the column values.

@rows Number of rows.

@rowsort Matrix where each row contains sorted columns.

@rpareto Pareto distribution random draw.

@rpoisson Poisson distribution random draw.

@rprod Row products in group object.

@rquantile Row quantiles in group object.

@rstdev Row sample (d.f. corrected) standard deviations of group object.

@rstdevp Row population (non d.f. corrected) standard deviations of group object.

@rstdevs Row sample (d.f. corrected) standard deviations of group object.

@rsum Row sums of group object.

@rsumsq Row sums of squares of group object.

@rsweep Reverse sweep operator.

@rtrim Trim right whitespace of string.

@runif Uniform distribution random draw.

@runpath Location of the program currently being executed.

@rvalcount Number of matching values in rows of group object.

@rvar Row population (non d.f. corrected) variances of group object.

@rvarp Row population (non d.f. corrected) variances of group object.

@rvars Row sample (d.f. corrected) standard deviations of group object.

@rweib Weibull distribution random draw.

@rwish Wishart random draw.