R: Converts a List of Fingerprints to a Matrix

fp.to.matrix {fingerprint} | R Documentation

## Converts a List of Fingerprints to a Matrix

### Description

In general, fingerprint data is read from a file or obtained via calls to an external generator and the return value is a list of fingerprints. This function takes the list and returns a matrix having number of rows equal to the number of fingerprints and the number of columns equal to the length of the fingerprint. Each element is 1 or 0 (1's being specified by the positions in each fingerprint vector)

### Usage

    fp.to.matrix(fplist)

### Arguments

`fplist` | A list structure with each element being an object of class `fingerprint`. These will can be constructed by hand or read from disk via `fp.read`

### Value

A matrix with dimensions equal to `length(fplist), bit length)` where bit length is a property of the fingerprint objects in the list.

### Author(s)

Rajarshi Guha rguha@indiana.edu

### See Also

`distance`, `fp.read`

### Examples

    # make fingerprint objects
    fp1 <- new("fingerprint", nbit=6, bits=c(1,2,5,6))
    fp2 <- new("fingerprint", nbit=6, bits=c(1,4,5,6))
    fp3 <- new("fingerprint", nbit=6, bits=c(2,3,4,5,6))

    fp.to.matrix( list(fp1,fp2,fp3) )

[Package fingerprint version 3.5.7 Index]