R/utils.R

In olsrr: Tools for Building OLS Regression Models

fs <- function() {
  x <- rep("  ")
  return(x)
}

fg <- function(x, w) {
  z <- as.character(x)
  y <- format(z, width = w, justify = "right")
  return(y)
}

fl <- function(x, w) {
  x <- as.character(x)
  ret <- format(x, width = w, justify = "left")
  return(ret)
}

fc <- function(x, w) {
  x <- as.character(x)
  ret <- format(x, width = w, justify = "centre")
  return(ret)
}

fw <- function(x, w) {
  z <- format(as.character(x), width = w, justify = "right")
  return(z)
}

formatter_t <- function(x, w) {
  ret <- format(x, width = w, justify = "centre")
  return(ret)
}

formatter_n <- function(x, w) {
  ret <- format(x, nsmall = 3)
  ret1 <- format(ret, width = w, justify = "centre")
  return(ret1)
}

format_cil <- function(x, w) {
  ret <- format(x, nsmall = 3)
  ret1 <- format(ret, width = w, justify = "centre")
  return(ret1)
}

format_ciu <- function(x, w) {
  ret <- format(x, nsmall = 3)
  ret1 <- format(ret, width = w, justify = "centre")
  return(ret1)
}

formats_t <- function() {
  x <- rep("  ")
  return(x)
}

#' Model data
#'
#' Returns the data used in the model.
#'
#' @param model An object of class \code{lm}.
#'
#' @noRd
#'
mod_sel_data <- function(model) {

  eval(model$call$data)

}

l <- function(x) {
  x <- as.character(x)
  k <- grep("\\$", x)
  if (length(k) == 1) {
    temp <- strsplit(x, "\\$")
    out <- temp[[1]][2]
  } else {
    out <- x
  }
  return(out)
}

#' @importFrom utils packageVersion menu install.packages
check_suggests <- function(pkg) {
  
  pkg_flag <- tryCatch(utils::packageVersion(pkg), error = function(e) NA)
  
  if (is.na(pkg_flag)) {
    
    msg <- message(paste0('\n', pkg, ' must be installed for this functionality.'))
    
    if (interactive()) {
      message(msg, "\nWould you like to install it?")
      if (utils::menu(c("Yes", "No")) == 1) {
        utils::install.packages(pkg)
      } else {
        stop(msg, call. = FALSE)
      }
    } else {
      stop(msg, call. = FALSE)
    } 
  }

}