converters: Converts X!Tandem xml files to R objects and vice versa

In rTANDEM: Interfaces the tandem protein identification algorithm in R

Description

Functions like GetTaxoFromXML("pathToXML"), GetParamFromXML("pathToXML"), GetResultsFromXML(pathToXML) creates R object from X!Tandem-style xml files. The functions WriteParamToXML(paramObject) and WriteTaxoToXML(paramObject) will create an X!Tandem-style xml file from an R object.

Usage

GetTaxoFromXML(xml.file)
GetParamFromXML(xml.file)
GetResultsFromXML(xml.file)
WriteParamToXML(param, file, embeddedParam=c("write", "skip", "merge"),
embeddedTaxo=c("write","skip") )
WriteTaxoToXML(taxo, file)

Arguments

xml.file	The path to the xml file that is to be read.
file	The name of the xml file that is to be created.
param	An object of class rTParam that will be used to create the corresponding xml file.
taxo	A rTTaxo object whose content will be written to an xml file.
embeddedParam	The behaviour to adopt if a rTParam object contains an embedded rTParam object in the "list path, default parameters" slot. The option "merge" will merge the two object together. The option "write" will call WriteParamToXML on the embedded rTParam object and write it to the the given file name plus suffixe "_default_param". It will then replace the embedded object by its path in the original object. The option "skip" will just ignore this slot.
embeddedTaxo	The behaviour to adopt if the rTParam object contains an embedded rTTaxo object in the "list path, taxonomy information" slot. The option "write" will call WriteTaxoToXML on the object and write it to the input file name plus suffixe "_taxonomy". It will then replace the rTTaxo object by its path in the container rTParam object. The option "skip" will just ignore this slot.

Value

'WriteParamToXML' and 'WriteTaxoToXML' have no return value: they are used for their side-effect of creating an xml file. 'GetTaxoFromXML' returns an object of the S3 class rTTaxo, 'GetParamFromXML' return an object of the S3 class rTParam, and 'GetResultsFromXML' returns and object of the S4 class rTResult.

Examples

## Not run: 
# To write a parameter or taxonomy object to a single xml file:
WriteParamToXML(parameter_object, file="parameter_file")
# Produces the file 'parameter_file'.

# To write a parameter object which has an embedded default
# parameter set to two xml files: 
WriteParamToXML(parameter_object, file="param_file",
embeddedParam="write")
# Produces the files 'param_file' and 'param_file_default_param'.

# To write a parameter object that contains an embedded taxonomy to
# two different xml files:
WriteParamToXML(parameter_object, file="parameter_file",
embeddedTaxo="write")
# Produces the files 'parameter_file' and 'parameter_file_taxonomy'.

# To write a taxonomy object to a n xml file:
WriteTaxoToXML(taxonomy_object, file="taxonomy")
# Produces the file 'taxonomy'.

# To read a taxonomy file in R:
taxonomy <- GetTaxoFromXML("taxonomy.xml")
# Read the xml file and create a taxonomy object of class rTTaxo.

# To read a parameter file in R:
param <- GetParamFromXML("parameters.xml")
# Read the xml file and create a parameter object of class rTParam.

# To read a result file in R:
results <- GetResultsFromXML("output.xml")
# Read the output from X!Tandem and creates a R object of class
# rTResult.


## End(Not run)

rTANDEM documentation built on April 28, 2020, 7:04 p.m.