writeTargetsout {systemPipeR} | R Documentation

## Write updated targets out to file

### Description

Convenience write function for generating targets files with updated `FileName` columns containing the paths to files generated by input/output processes. These processes can be commandline- or R-based software. Typically, the paths to the inputs are stored in the targets infile (`targetsin(args)` for `SYSargs` objects or `targets.as.df(targets(WF))` for `SYSargs2` objects) and the outputs are stored in the targets outfile (`targetsout(args)` for `SYSargs` objects or `output(WF)`) for `SYSargs2` objects. Note: by default the function cannot overwrite any existing files. If a file exists then the user has to explicitly remove it or set `overwrite=TRUE`.

### Usage

    writeTargetsout(x, file = "default", silent = FALSE, overwrite = FALSE, step = NULL, new_col=NULL, new_col_output_index=NULL, ...)

### Arguments

`x` | Object of class `SYSargs` or `SYSargs2`.
`file` | Name and path of the output file. If set to "default" then the name of the output file will have the pattern 'targets_<software>.txt', where <software> will be what `software(x)` returns, when `x` is an object of class `SYSargs`. For an object of class `SYSargs2`, the output file will have the pattern 'targets_<software>_<step>.txt', where <software> will be the workflow name (`cwlfiles(x)$cwl`) and <step> will be the step chosen in the argument `step`.
`silent` | If set to `TRUE`, all messages returned by the function will be suppressed.
`overwrite` | If set to `TRUE`, existing files of same name will be overwritten.
`step` | Name or numeric position of the step in the workflow to write the output files. The names can be check running `names(x$clt)`.
`new_col` | A vector of character strings of the new column name to add to target file.
`new_col_output_index` | A vector of numeric index positions of the file in `SYSargs2` class `output`. It requires `new_col` definition.
`...` | To pass on additional arguments.

### Value

Writes tabular targes files containing the header/comment lines from `targetsheader(x)` and the columns from `targetsout(x)`.

### Author(s)

Daniela Cassol and Thomas Girke

### See Also

`writeTargetsRef`

### Examples

    #########################################
    ## Examples with \code{SYSargs} object ##
    #########################################
    ## Create SYSargs object
    param <- system.file("extdata", "tophat.param", package="systemPipeR")
    targets <- system.file("extdata", "targets.txt", package="systemPipeR")
    args <- systemArgs(sysma=param, mytargets=targets)

    ## Not run:
    ## Write targets out file
    writeTargetsout(x=args, file="default")

    ## End(Not run)

    ##########################################
    ## Examples with \code{SYSargs2} object ##
    ##########################################
    ## Construct SYSargs2 object
    targets <- system.file("extdata", "targets.txt", package="systemPipeR")
    dir_path <- system.file("extdata/cwl/hisat2/hisat2-se", package="systemPipeR")
    WF <- loadWorkflow(targets=targets, wf_file="hisat2-mapping-se.cwl",
                      input_file="hisat2-mapping-se.yml", dir_path=dir_path)
    WF <- renderWF(WF, inputvars=c(FileName="_FASTQ_PATH1_", SampleName="_SampleName_"))
    WF

    ## Not run:
    ## Write targets out file
    names(WF$clt)
    writeTargetsout(x=WF, file="default", step=1, new_col=c("sam_file"), new_col_output_index=c(1))

    ## End(Not run)

[Package systemPipeR version 1.20.0 Index]