R/lavpartable2lavsyntax.R

In TAM: Test Analysis Modules

## File Name: lavpartable2lavsyntax.R
## File Version: 9.07


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# create a lavaan syntax from lavaan parameter table
# This syntax only works for single groups.
lavpartable2lavsyntax <- function( lavpartable )
{
    lavpartable <- lavpartable[ lavpartable$user !=2, ]
    LL <- nrow(lavpartable)
    syn0 <- paste0( lavpartable$lhs, lavpartable$op )
    lavpartable$ustart2 <- lavpartable$ustart
    lavpartable$ustart2[ is.na( lavpartable$ustart) ] <- ""
    lavpartable$ind0 <- 0
    # op=="==" and ustart==NA
    ind <- which( ( lavpartable$op=="==" ) & ( is.na( lavpartable$ustart ) ) )
    if ( length(ind) > 0 ){
        lavpartable[ ind, "ustart2" ] <- ""
        lavpartable[ ind, "ind0" ] <- 1
    }

    lavpartable$ustart2 <-
            ifelse( lavpartable$ustart2 !="", paste0(lavpartable$ustart2, "*"  )    , lavpartable$ustart2 )

    lavpartable$prefix <- ""
    lavpartable$prefix <- ifelse( paste(lavpartable$label ) !="",
                    paste0(lavpartable$label, "*"  ), lavpartable$prefix )
    lavpartable$prefix <- ifelse( ( lavpartable$free==0 ) & ( paste(lavpartable$label )=="" ),
                    lavpartable$ustart2, lavpartable$prefix )
    syn0 <- paste0( syn0, lavpartable$prefix, lavpartable$rhs  )
    syn0 <- paste0( syn0, collapse="\n")
    return(syn0)
}
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