This function makes a full normal plot of the elements of the vector called effects
This function makes a full normal plot of the elements of the vector called effects
fullnormal(effects, labs, alpha = 0.05, refline = "TRUE")
effects |
input - vector of effects to be plotted |
labs |
input - vector of labels of the effects to be plotted |
alpha |
input - alpha level for labeling of significant effects using Lenth statistic |
refline |
input - logical variable that indicates whether a reference line is added to the plot (default is "TRUE") |
John Lawson
# Example Separate Normal plots of whole and split plot effects from an unreplicated split-plot data(plasma) sol<-lm(y~A*B*C*D*E,data=plasma) summary(sol) # get whole plot effects and split plot effects effects<-coef(sol) effects<-effects[c(2:32)] Wpeffects<-effects[c(1:4, 6:11, 16:19, 26)] Speffects<-effects[c(5,12:15,20:25,27:31)] #make separate normal plots fullnormal(Wpeffects,names(Wpeffects),alpha=.10) fullnormal(Speffects,names(Speffects),alpha=.05) ## The function is currently defined as function (effects, labs, alpha = 0.05, refline = "TRUE") { crit <- LenthPlot(effects, alpha = alpha, plt = FALSE)["ME"] names <- names(effects) names <- gsub(":", "", names) names <- gsub("1", "", names) le <- length(effects) for (i in 1:le) { logc <- (abs(effects[i]) <= crit) if (logc) { names[i] <- " " } } qqnorm(effects, ylab = "Estimated Effects", xlab = "Normal Scores") x <- qqnorm(effects, plot = FALSE) zscr <- (x$x) effp <- effects[zscr > 0] zp <- zscr[zscr > 0] namep <- names[zscr > 0] effn <- effects[zscr < 0] zn <- zscr[zscr < 0] namen <- names[zscr < 0] text(zp, effp, namep, pos = 1) text(zn, effn, namen, pos = 3) ahe <- abs(effects) s0 <- 1.5 * median(ahe) selhe <- ahe < (2.5 * s0) pse = 1.5 * median(ahe[selhe]) if (refline) { abline(0, pse) } }
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