arrayWeightsQuick {limma} | R Documentation

## Array Quality Weights

### Description

Estimates relative quality weights for each array in a multi-array experiment with replication.

### Usage

    arrayWeightsQuick(y, fit)

### Arguments

`y` | the data object used to estimate `fit`. Can be of any class which can be coerced to matrix, including `matrix`, `MAList`, `marrayNorm` or `ExpressionSet`.
`fit` | `MArrayLM` fitted model object

### Details

Estimates the relative reliability of each array by measuring how well the expression values for that array follow the linear model.

This is a quick and dirty version of `arrayWeights`.

### Value

Numeric vector of weights of length `ncol(fit)`.

### Author(s)

Gordon Smyth

### References

Ritchie, M. E., Diyagama, D., Neilson, van Laar, R., J., Dobrovic, A., Holloway, A., and Smyth, G. K. (2006). Empirical array quality weights for microarray data. BMC Bioinformatics. (Accepted 11 April 2006)

### See Also

See arrayWeights. An overview of LIMMA functions for reading data is given in 03.ReadingData.

### Examples

    ## Not run:
    fit <- lmFit(y, design)
    arrayWeightsQuick(y, fit)
    ## End(Not run)

[Package limma version 2.18.3 Index]