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caplotord<-function(frows,gcols,firstaxis,lastaxis,nseg,inertiapc,thingseg,col1,col2,col3,size1,size2){
#plotting biplot for ordered variables-depicting polynomials
# FGcord <- rbind(frows, gcols)
categ<-NULL
FGcord <- rbind(gcols,frows)
xmin <- min(FGcord[,firstaxis],FGcord[,lastaxis])
xmax <- max(FGcord[,firstaxis],FGcord[,lastaxis])
ymin <- min(FGcord[,lastaxis],FGcord[,firstaxis])
ymax <- max(FGcord[,lastaxis],FGcord[,firstaxis])
CAplot <- ggplot(FGcord, aes(x=FGcord[,firstaxis], y=FGcord[,lastaxis]),type="b") +
geom_point(aes(color=categ, shape=categ), size=size1) +
geom_vline(xintercept = 0, linetype=2, color="gray") +
geom_hline(yintercept = 0, linetype=2, color="gray") +
labs(x=paste0("Dimension ",firstaxis,sep=" (", round(inertiapc[1],1), "%)"),y=paste0("Dimension ",lastaxis,sep= " (", round(inertiapc[2],1),"%)")) +
scale_x_continuous(limits = c(xmin, xmax)) +
scale_y_continuous(limits = c(ymin, ymax)) +
theme(panel.background = element_rect(fill="white", colour="black")) +
# scale_colour_manual(values=c("red", "blue")) +
scale_colour_manual(values=c(col2, col1)) +
coord_fixed(ratio = 1, xlim = NULL, ylim = NULL, expand = TRUE) +
geom_text_repel(data=FGcord, aes(colour=categ, label = labels), size = size2) +
geom_line(aes(group=categ,linetype=categ),lwd=.2,colour="gray")+
scale_linetype_manual(values=c("rows"="dashed","cols"="blank"))+
geom_segment(data=thingseg,aes(x=rep(0,c(nseg)),y=rep(0,c(nseg)),xend=thingseg[, firstaxis],yend=thingseg[,
lastaxis]),colour=rep(col3,nseg))+
theme(legend.position="none")+
ggtitle(" ")
grid.arrange(CAplot, ncol=1)
}
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