prepareMplusData: Create tab-delimited file and Mplus input syntax from R...
In MplusAutomation: Automating Mplus Model Estimation and Interpretation

Description Usage Arguments Value Author(s) Examples

The prepareMplusData function converts an R data.frame object into a tab-delimited file (without header) to be used in an Mplus input file. The corresponding Mplus syntax, including the data file definition and variable names, is printed to the console.

1 2	prepareMplusData(df, filename, keepCols, dropCols, inpfile=FALSE, interactive=TRUE, overwrite=TRUE)

`df`	The R data.frame to be prepared for Mplus
`filename`	The path and filename for the tab-delimited data file for use with Mplus. Example: "C:/Mplusdata/data1.dat"
`keepCols`	A character vector specifying the variable names within `df` to be output to `filename`.
`dropCols`	A character vector specifying the variable names within `df` to be omitted from the data output to `filename`.
`inpfile`	Logical value whether the Mplus syntax should be written to the console or to an input file. Defaults to `FALSE`. If `TRUE`, the file name will be the same as `filename` with the extension changed to .inp. Alternately, this can be a character string giving the file name to write the Mplus syntax to.
`interactive`	Logical value indicating whether file names should be selected interactively. If `filename` is missing and `interative=TRUE`, then a dialog box will pop up to select a file or a console prompt if in a non-interactive context. Defaults to `TRUE`.
`overwrite`	Logical value indicating whether data and input (if present) files should be overwritten. Defaults to `TRUE` to be consistent with prior behavior. If `FALSE` and the file to write the data to already exists, it will throw an error.

No value is returned by this function. It is solely used to convert an R data.frame to an Mplus data file.

Michael Hallquist

## Not run: 
library(foreign)

study5 <- read.spss("reanalysis-study-5-mt-fall-08.sav", to.data.frame=TRUE)
ASData5 <- subset(study5, select=c("ppnum", paste("as", 1:33, sep="")))

prepareMplusData(ASData5, "study5.dat")

## End(Not run)