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matrixStats::anyMissing Checks if there are any missing values in an object or not
matrixStats::indexByRow Translates matrix indices by rows into indices by columns
matrixStats::rowAlls Checks if a value exists / does not exist in each row (column) of a matrix
matrixStats::rowCounts Counts the number of occurrences of a specific value
matrixStats::rowCumsums Cumulative sums, products, minima and maxima for each row (column) in a matrix
matrixStats::rowDiffs Calculates difference for each row (column) in a matrix
matrixStats::rowIQRs Estimates of the interquartile range for each row (column) in a matrix
matrixStats::rowMeans2 Calculates the mean for each row (column) in a matrix
matrixStats::rowMedians Calculates the median for each row (column) in a matrix
matrixStats::rowOrderStats Gets an order statistic for each row (column) in a matrix
matrixStats::product Calculates the product for each row (column) in a matrix
matrixStats::rowQuantiles Estimates quantiles for each row (column) in a matrix
matrixStats::rowRanges Gets the range of values in each row (column) of a matrix
matrixStats::rowRanks Gets the rank of the elements in each row (column) of a matrix
matrixStats::rowMads Standard deviation estimates for each row (column) in a matrix
matrixStats::rowSums2 Calculates the sum for each row (column) in a matrix
matrixStats::rowVars Variance estimates for each row (column) in a matrix
matrixStats::rowWeightedMeans Calculates the weighted means for each row (column) in a matrix
matrixStats::rowWeightedMedians Calculates the weighted medians for each row (column) in a matrix
matrixStats::varDiff Estimation of scale based on sequential-order differences
reshape::sparseby Apply a Function to a Data Frame split by levels of indices
zoo::rollapply Apply Rolling Functions
base::apply Apply Functions Over Array Margins
base::by Apply a Function to a Data Frame Split by Factors
base::Control Control Flow
base::eapply Apply a Function Over Values in an Environment
base::identical Test Objects for Exact Equality
base::lapply Apply a Function over a List or Vector
base::rapply Recursively Apply a Function to a List
base::sweep Sweep out Array Summaries
base::tapply Apply a Function Over a Ragged Array
stats::dendrapply Apply a Function to All Nodes of a Dendrogram
utils::combn Generate All Combinations of n Elements, Taken m at a Time