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#' @title S3 Plotting Thustonian Thresholds with SE
#' @exportS3Method plot pairSE
#' @keywords methods
#' @method plot pairSE
#' @description S3 plotting method for object of class\code{c("pairSE","list")}
#' @param x object of class\code{c("pairSE","list")}
#' @param sortdif logical wether to order items by difficulty
#' @param ra either the character \code{"auto"} (default) or an numeric, defining the (logit) range for y-axis
#' @param ci numeric defining confidence intervall for point estimator
#' @param main see \code{\link{plot}}
#' @param col.lines vector of colors for threshold profile lines
#' @param col.error vector of colors for error bars
#' @param type see \code{\link{plot}}
#' @param xlab see \code{\link{plot}}
#' @param ylab see \code{\link{plot}}
#' @param pch see \code{\link{plot}}
#' @param las see \code{\link{plot}}
#' @param cex.axis see \code{\link{plot}}
#' @param ... other parameters passed to plot
########################### hier die plot method für pairSE #############################
#ci=2; sortdif=FALSE; ra="auto"; main=NULL; col.lines=1:(dim(x$parameter)[2]-1); col.error=1:(dim(x$parameter)[2]-1); type="b";xlab="items"; ylab="logits"; pch=20; las=3; cex.axis = 0.8
#plot.pairSE<-function(x, ci=2, sortdif=FALSE, ra="auto", main=NULL, col.lines=1:(dim(x$parameter)[2]-1), col.error=1:(dim(x$parameter)[2]-1), type="b",xlab="items", ylab="logits", pch=20, las=3, cex.axis = 0.8, ...){
plot.pairSE<-function(x, ci=2, sortdif=FALSE, ra="auto", main=NULL, col.lines=1:(dim(x$threshold)[2]), col.error=1:(dim(x$threshold)[2]), type="b",xlab="items", ylab="logits", pch=20, las=3, cex.axis = 0.8, ...){
if(length(main)==0){main<-deparse(substitute(x))}
bereich <- ra
if(sortdif==TRUE){
#sorter <- order(x$parameter[,"sigma"])
sorter <- order(x$sigma)
# x$parameter <- x$parameter[sorter,]
SE <- x$SE[sorter,]## new 31-5-2016
dim(SE) <- dim(x$SE)## new 31-5-2016
colnames(SE) <- colnames(x$SE)## new 31-5-2016
rownames(SE) <- (rownames(x$SE))[sorter]## new 31-5-2016
threshold <- x$threshold[sorter,]## new 31-5-2016
dim(threshold) <- dim(x$threshold)## new 31-5-2016
colnames(threshold) <- colnames(x$threshold)## new 31-5-2016
rownames(threshold) <- (rownames(x$threshold))[sorter]## new 31-5-2016
x$SE <- SE
x$threshold <- threshold
x$SEsigma <- x$SEsigma[sorter]
x$sigma <- x$sigma[sorter]
cat("(ordered by location) \n")
}
#ende der sortierung
# thresholds<-as.matrix(x$parameter[,1:(dim(x$parameter)[2]-1)])
thresholds <- x$threshold
# SEthresholds<-as.matrix(x$SE[,1:(dim(x$SE)[2]-1)])
SEthresholds <- x$SE
if(dim(thresholds)[2]==1){colnames(thresholds)="sigma"}
thresholds->logit
maxLen <- dim(logit)[2]; nitem <- dim(logit)[1]
op <- par(mar = c(5,4,4,6),bty="n",oma=c(0, 0, 0, 0) ) # set graphics options
##### plotingrange festlegen mit leerplot
## automatische y achsen skalierung
if((bereich)[1]=="auto"){
y1<-floor(min(logit,na.rm=TRUE))
y2<-ceiling(max(logit,na.rm=TRUE))
}
## feste vorgegebene y achsen skalierung
if(is.numeric(bereich)){
y1<- -bereich
y2<- bereich
}
# empty ploting range
plot(c((1-.5),(nitem +.5) ),c(y1,y2), type="n",xaxt="n",xlab=xlab,ylab=ylab,bty="n",main=main)
# plotting lines
matplot(logit,add=TRUE,pch=pch,type=type, xlab=xlab, xaxt="n", main=main, col = col.lines)#, ...
axis(1, 1:(nitem), labels=c(rownames(logit)),las=las, cex.axis=cex.axis)#, ...
mtext(text=colnames(logit), side = 4, at = colMeans(logit,na.rm=TRUE), padj = NA, cex = cex.axis, col = col.lines,las=1)
#for (i in 1:(dim(x$parameter)[2]-1)){
for (i in 1:(dim(x$threshold)[2])){
#segments( 1:(dim(x$parameter)[1]), thresholds[,i]+SEthresholds[,i]*ci, 1:(dim(x$parameter)[1]), thresholds[,i]-SEthresholds[,i]*ci ,col=col.error[i])#,...
segments( 1:(dim(x$threshold)[1]), thresholds[,i]+SEthresholds[,i]*ci, 1:(dim(x$threshold)[1]), thresholds[,i]-SEthresholds[,i]*ci ,col=col.error[i])#,...
#segments( 1:(dim(x$parameter)[1])-((.15*(SEthresholds[,i]!=0))*ci), thresholds[,i]+SEthresholds[,i]*ci, 1:(dim(x$parameter)[1])+((.15*(SEthresholds[,i]!=0))*ci), thresholds[,i]+SEthresholds[,i]*ci ,col=col.error[i])#,...
segments( 1:(dim(x$threshold)[1])-((.15*(SEthresholds[,i]!=0))*ci), thresholds[,i]+SEthresholds[,i]*ci, 1:(dim(x$threshold)[1])+((.15*(SEthresholds[,i]!=0))*ci), thresholds[,i]+SEthresholds[,i]*ci ,col=col.error[i])#,...
#segments( 1:(dim(x$parameter)[1])-((.15*(SEthresholds[,i]!=0))*ci), thresholds[,i]-SEthresholds[,i]*ci, 1:(dim(x$parameter)[1])+((.15*(SEthresholds[,i]!=0))*ci), thresholds[,i]-SEthresholds[,i]*ci ,col=col.error[i])#,...
segments( 1:(dim(x$threshold)[1])-((.15*(SEthresholds[,i]!=0))*ci), thresholds[,i]-SEthresholds[,i]*ci, 1:(dim(x$threshold)[1])+((.15*(SEthresholds[,i]!=0))*ci), thresholds[,i]-SEthresholds[,i]*ci ,col=col.error[i])#,...
}
par(op) # reset graphics setting
}
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