Nothing
## ----setup, include=FALSE-----------------------------------------------------
library(knitr)
opts_chunk$set(out.extra='style="display:block; margin: auto"', fig.align="center")
library(nullabor)
## -----------------------------------------------------------------------------
simPoll <- function(trueData) {
simMargin <- rnorm(nrow(trueData), mean=trueData$Margin, sd=2.5)
simDemocrat <- ((simMargin>0) & trueData$Democrat) | ((simMargin<0) & !trueData$Democrat)
simMargin <- abs(simMargin)
res <- trueData
res$Democrat <- simDemocrat
res$Margin <- simMargin
res
}
## -----------------------------------------------------------------------------
data(electoral, package="nullabor")
margins <- electoral$polls
sim1 <- simPoll(margins)
sum(sim1$Electoral.Votes[sim1$Democrat])
## -----------------------------------------------------------------------------
pos <- sample(20,1)
lpdata <- nullabor::lineup(method = simPoll, true=margins, n=20, pos=pos)
dim(lpdata)
summary(lpdata)
## -----------------------------------------------------------------------------
election <- electoral$election
idx <- which(lpdata$.sample==pos)
lpdata$Margin[idx] <- election$Margin
## ---- warning=FALSE, message=FALSE--------------------------------------------
library(dplyr)
lpdata <- lpdata %>% arrange(desc(Margin))
lpdata <- lpdata %>% group_by(.sample, Democrat) %>% mutate(
tower=cumsum(Electoral.Votes[order(Margin, decreasing=TRUE)])
)
lpdata$diff <- with(lpdata, Margin*c(1,-1)[as.numeric(Democrat)+1])
## ---- fig.height=7, fig.width=6, warning=FALSE, message=FALSE-----------------
library(ggplot2)
dframe <- lpdata
dframe$diff <- with(dframe, diff+sign(diff)*0.075)
dframe$diff <- pmin(50, dframe$diff)
ggplot(aes(x=diff, y=tower, colour = factor(Democrat)), data=dframe) +
scale_colour_manual(values=c("red", "blue"), guide="none") +
scale_fill_manual(values=c("red", "blue"), guide="none") +
scale_x_continuous(breaks=c(-25,0,25), labels=c("25", "0", "25"),
limits=c(-50,50)) +
geom_rect(aes(xmin=pmin(0, diff), xmax=pmax(0,diff), ymin=0,
ymax=tower, fill=Democrat), size=0) +
geom_vline(xintercept=0, colour="white") +
facet_wrap(~.sample) +
theme(axis.text=element_blank(), axis.ticks=element_blank(),
axis.title=element_blank(),
plot.margin=unit(c(0.1,0.1,0,0), "cm")) +
ggtitle("Which of these panels looks the most different?")
## -----------------------------------------------------------------------------
pos
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