ExplicitRepresentationAccessors {kebabs} | R Documentation

## ExplicitRepresentation Accessors

### Description

ExplicitRepresentation Accessors

### Usage

    ## S4 methods for signature 'ExplicitRepresentation'
    ## x[i,j]

    ## further methods see below

    ## S4 method for signature 'matrix,dgRMatrix'
    x %*% y

    ## S4 method for signature 'dgRMatrix,numeric'
    x %*% y

### Arguments

`x` | an explicit representation in dense or sparse format
`i` | integer vector or character vector with a subset of the sample indices or names
`y` | in the first case and explicit representation and `x` is a `matrix`, for the second case a numeric matrix and x is an explicit representation
`j` | integer vector or character vector with a subset of the feature indices or names

### Value

see details above

### Accessor-like methods

  `x[i,]`: return a `KernelMatrix` object that only contains the rows selected with the subsetting parameter `i`. This parameter can be a numeric vector with indices or a character vector which is matched against the names of `x`.

  `x[,j]`: return a `KernelMatrix` object that only contains the columns selected with the subsetting parameter `j`. This parameter can be a numeric vector with indices or a character vector which is matched against the names of `x`.

  `x[i,j]`: return a `KernelMatrix` object that only contains the rows selected with the subsetting parameter `i` and columns selected by `j`. Both parameters can be a numeric vector with indices or a character vector which is matched against the names of `x`.

### Accessor-like methods

  `%*%`: this function provides the multiplication of a `dgRMatrix` or a sparse explicit representation (which is derived from `dgRMatrix`) with a matrix or a vector. This functionality is not available in package Matrix for a `dgRMatrix`.

### Author(s)

Johannes Palme <kebabs@bioinf.jku.at>

### References

http://www.bioinf.jku.at/software/kebabs
J. Palme, S. Hochreiter, and U. Bodenhofer (2015) KeBABS: an R package for kernel-based analysis of biological sequences. Bioinformatics, 31(15):2574-2576, 2015. DOI: 10.1093/bioinformatics/btv176.

[Package kebabs version 1.21.0 Index]