R/REGR_INTERCEPT.R

In nonsleepr/teradataR: Teradata R Package

REGR_INTERCEPT <- function(x, y) {
    if (inherits(x, "td.data.frame")) {
        if (length(x) > 1) 
            message("REGR_INTERCEPT warning:  td.data.frame 'x' has length > 1 using first element")
        
        xval <- .td.gencolumnexpr(x[1])
    } else if (inherits(x, "td.expression")) 
        xval <- x else if (inherits(x, "character")) 
        xval <- paste("'", x, "'", sep = "") else stop("Invalid data type for 'x' in REGR_INTERCEPT function")
    
    if (inherits(y, "td.data.frame")) {
        if (length(y) > 1) 
            message("REGR_INTERCEPT warning:  td.data.frame 'y' has length > 1 using first element")
        
        yval <- .td.gencolumnexpr(y[1])
    } else if (inherits(y, "td.expression")) 
        yval <- y else if (inherits(y, "character")) 
        yval <- paste("'", y, "'", sep = "") else stop("Invalid data type for 'y' in REGR_INTERCEPT function")
    
    
    val <- paste("REGR_INTERCEPT(", xval, ",", yval, ")", sep = "")
    
    class(val) <- "td.expression"
    return(val)
}

# CEIL <- function(x) { if(inherits(x, 'td.data.frame')) { if(length(x) == 1) if(!is.null(attr(x, 'expressions'))) {
# val <- paste('CEIL(', attr(x, 'expressions')[[names(x)]], ')', sep='') class(val) <- 'td.expression' return(val) }
# else { val <- paste('CEIL(\'', names(x), '\')', sep='') class(val) <- 'td.expression' return(val) } else {
# message('CEIL warning: td.data.frame 'x' has length > 1 using first element') val <- paste('CEIL(\'', names(x)[1],
# '\')', sep='') class(val) <- 'td.expression' return(val) } } if(inherits(x, 'character') ||
# inherits(x,'td.expression')) { val <- paste('CEIL(', x, ')', sep='') class(val) <- 'td.expression' return(val) } }