Package index • dbMatrix

Constructor

Function for creating dbMatrix objects

dbMatrix(): Create a dbSparseMatrix or dbDenseMatrix object

Matrix Summary Operations

Methods to compute summary statistics for dbMatrix objects

mean(<dbDenseMatrix>) mean(<dbSparseMatrix>): Arithmetic Mean for dbMatrix objects

rowMeans(<dbDenseMatrix>) rowMeans(<dbSparseMatrix>) colMeans(<dbDenseMatrix>) colMeans(<dbSparseMatrix>): Row (column) means for dbMatrix objects

rowSums(<dbDenseMatrix>) rowSums(<dbSparseMatrix>) colSums(<dbDenseMatrix>) colSums(<dbSparseMatrix>): Row (column) sums for dbMatrix objects

colSds(<dbDenseMatrix>) colSds(<dbSparseMatrix>) rowSds(<dbDenseMatrix>) rowSds(<dbSparseMatrix>): Row (column) standard deviations for dbMatrix objects

sum(<dbMatrix>): Sum of Vector Elements in dbMatrix objects

Matrix Transformations

Methods for transforming dbMatrix objects

as.matrix(<dbMatrix>): Convert dbMatrix to in-memory matrix

log(<dbMatrix>): Logarithms and Exponentials

t(<dbMatrix>): Matrix Transpose

Matrix Properties

Methods to retrieve basic properties of dbMatrix objects

dim(<dbMatrix>): Dimensions of an Object

head(<dbMatrix>) tail(<dbMatrix>): Return the First or Last Parts of an Object

rownames(<dbMatrix>) `rownames<-`(<dbMatrix>) colnames(<dbMatrix>) `colnames<-`(<dbMatrix>) dimnames(<dbMatrix>) `dimnames<-`(<dbMatrix>,<list>): Retrieve and Set Row (Column) Dimension Names of dbMatrix Objects

nrow(<dbMatrix>) ncol(<dbMatrix>): The Number of Rows/Columns of a dbMatrix Object

dbData objects

Convenience methods for dbData objects

dbList(<DBIConnection>): List remote tables, temporary tables, and views