diff options
Diffstat (limited to 'R/calplot.R')
| -rw-r--r-- | R/calplot.R | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/R/calplot.R b/R/calplot.R index 0cc6120..6aed9c0 100644 --- a/R/calplot.R +++ b/R/calplot.R @@ -1,6 +1,6 @@ calplot <- function(object, - xlim = c("auto","auto"), ylim = c("auto","auto"), - xlab = "Concentration", ylab = "Response", alpha=0.05, + xlim = c("auto", "auto"), ylim = c("auto", "auto"), + xlab = "Concentration", ylab = "Response", alpha = 0.05, varfunc = NULL) { UseMethod("calplot") @@ -22,14 +22,6 @@ calplot.lm <- function(object, if (length(object$coef) > 2) stop("More than one independent variable in your model - not implemented") - if (length(object$weights) > 0) { - stop(paste( - "\nConfidence and prediction intervals for weighted linear models require", - "weights for the x values from which the predictions are to be generated.", - "This is not supported by the internally used predict.lm method.", - sep = "\n")) - } - if (alpha <= 0 | alpha >= 1) stop("Alpha should be between 0 and 1 (exclusive)") @@ -65,9 +57,17 @@ calplot.lm <- function(object, 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", @@ -76,4 +76,5 @@ calplot.lm <- function(object, lwd = 2, col = c("black", "green4", "red"), horiz = FALSE, cex = 0.9, bg = "gray95") + } } |