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-rw-r--r--trunk/chemCal/R/calplot.R80
1 files changed, 0 insertions, 80 deletions
diff --git a/trunk/chemCal/R/calplot.R b/trunk/chemCal/R/calplot.R
deleted file mode 100644
index 6aed9c0..0000000
--- a/trunk/chemCal/R/calplot.R
+++ /dev/null
@@ -1,80 +0,0 @@
-calplot <- function(object,
- xlim = c("auto", "auto"), ylim = c("auto", "auto"),
- xlab = "Concentration", ylab = "Response", alpha = 0.05,
- varfunc = NULL)
-{
- UseMethod("calplot")
-}
-
-calplot.default <- function(object,
- xlim = c("auto","auto"), ylim = c("auto","auto"),
- xlab = "Concentration", ylab = "Response",
- alpha=0.05, varfunc = NULL)
-{
- stop("Calibration plots only implemented for univariate lm objects.")
-}
-
-calplot.lm <- function(object,
- xlim = c("auto","auto"), ylim = c("auto","auto"),
- xlab = "Concentration", ylab = "Response", alpha=0.05,
- varfunc = NULL)
-{
- if (length(object$coef) > 2)
- stop("More than one independent variable in your model - not implemented")
-
- if (alpha <= 0 | alpha >= 1)
- stop("Alpha should be between 0 and 1 (exclusive)")
-
- m <- object
- level <- 1 - alpha
- y <- m$model[[1]]
- x <- m$model[[2]]
- if (xlim[1] == "auto") xlim[1] <- 0
- if (xlim[2] == "auto") xlim[2] <- max(x)
- xlim <- as.numeric(xlim)
- newdata <- list(
- x = seq(from = xlim[[1]], to = xlim[[2]], length=250))
- names(newdata) <- names(m$model)[[2]]
- if (is.null(varfunc)) {
- varfunc <- if (length(m$weights)) {
- function(variable) mean(m$weights)
- } else function(variable) rep(1,250)
- }
- pred.lim <- predict(m, newdata, interval = "prediction",
- level=level, weights.newdata = varfunc(m))
- conf.lim <- predict(m, newdata, interval = "confidence",
- level=level)
- yrange.auto <- range(c(0,pred.lim))
- if (ylim[1] == "auto") ylim[1] <- yrange.auto[1]
- if (ylim[2] == "auto") ylim[2] <- yrange.auto[2]
- plot(1,
- type = "n",
- xlab = xlab,
- ylab = ylab,
- xlim = as.numeric(xlim),
- ylim = as.numeric(ylim)
- )
- points(x,y, pch = 21, bg = "yellow")
- matlines(newdata[[1]], pred.lim, lty = c(1, 4, 4),
- col = c("black", "red", "red"))
- if (length(object$weights) > 0) {
- legend(min(x),
- max(pred.lim, na.rm = TRUE),
- legend = c("Fitted Line", "Confidence Bands"),
- lty = c(1, 3),
- lwd = 2,
- col = c("black", "green4"),
- horiz = FALSE, cex = 0.9, bg = "gray95")
- } else {
- matlines(newdata[[1]], conf.lim, lty = c(1, 3, 3),
- col = c("black", "green4", "green4"))
- legend(min(x),
- max(pred.lim, na.rm = TRUE),
- legend = c("Fitted Line", "Confidence Bands",
- "Prediction Bands"),
- lty = c(1, 3, 4),
- lwd = 2,
- col = c("black", "green4", "red"),
- horiz = FALSE, cex = 0.9, bg = "gray95")
- }
-}

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