app2gds {bigmelon} | R Documentation

## Append a MethyLumiSet object to a preexisting gds file

### Description

This function will append a MethyLumiSet object to a gds file and return a gds.class object.

### Usage

    app2gds(m, bmln)

### Arguments

`m` | The MethyLumiSet object to be appended to the gds file, with the same number of rows as the gds file.
`bmln` | Either: A gds.class object Or: A character string specifying the filepath of an existing .gds file to write to. Or: A character string specifying the file path of a new .gds file to write to

### Details

Currently this function only takes a MethyLumiSet object as the only type of eligible input. This function will also produce unexpected results if the number of rows of the new object does not match the existing .gds file. Hopefully the function will noisily fail if this is the case however to prevent any errors from occuring it is recommended that raw idat files are read in using `readEPIC` or appended with `iadd` or `iadd2` to ensure that all rows are of the same length and have the same annotation.

### Value

A gds.class object pointed towards the newly appended .gds file.

### Author(s)

Leonard C Schalkwyk, Ayden Saffari, Tyler Gorrie-Stone Who to contact: <t.gorrie-stone@qmul.ac.uk>

### See Also

`es2gds`, `iadd`, `iadd2`.

### Examples

    #load example dataset
    data(melon)

    #split data into halves
    melon_1 <- melon[,1:6]
    melon_2 <- melon[,7:12]

    #convert first half to gds
    e <- es2gds(melon_1,'1_half_melon.gds')

    #append second half to existing gds file
    f <- app2gds(melon_2,e)

    closefn.gds(e)
    unlink("1_half_melon.gds")

[Package bigmelon version 1.13.14 Index]