Created
June 17, 2015 20:35
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library(ggplot2) | |
library(scales) | |
library(lubridate) | |
load("elections1.rda") | |
shinyServer(function(input, output) { | |
position <- reactiveValues(x = NULL) | |
observeEvent(input$plot_hower, { | |
hower <- input$plot_hower | |
if (!is.null(hower)) { | |
position$x <- hower$x | |
} | |
}) | |
# | |
output$plot <- renderPlot({ | |
elections <- elections1[elections1$source %in% input$pola,] | |
pl <- ggplot(elections, aes(x=daysToElections, y=support)) + | |
geom_point(aes(shape=source, color=candidate), size=4) + | |
scale_shape_manual(values=LETTERS) + theme_bw() + xlab("days to elections") + ylab("support (%)") + | |
scale_y_continuous(limits=c(10,75), breaks=seq(10,70,10)) + | |
geom_smooth(size=2,aes(color=candidate),se=FALSE, method="lm") | |
if (!is.null(position$x)) { | |
pl <- pl + geom_linerange(x=position$x, ymin=10, ymax=65) | |
cand <- c("Bronisław Komorowski", "Andrzej Duda" ) | |
npoints <- predict(lm(support~daysToElections*candidate, data=elections1), | |
newdata = data.frame(daysToElections = position$x, | |
candidate=cand)) | |
ndf <- data.frame(candidate=cand, support=npoints, daysToElections = position$x) | |
ndf2 <- data.frame(support=72, daysToElections = position$x, | |
text=paste0("Days to elections: ",round(position$x),"\n", | |
paste0(cand, " (", round(npoints,1), "%)", collapse="\n"), | |
"\ndiff: ", round(diff(npoints),1), "%")) | |
pl <- pl + geom_point(data=ndf, aes(color=candidate), size=4) + | |
geom_text(data=ndf2, aes(x=daysToElections, y=support, label=text), size=4, hjust=1+position$x/170) | |
} | |
pl + scale_color_manual(values=c("blue3", "orange3")) | |
}) | |
}) |
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library(shiny) | |
load("elections1.rda") | |
shinyUI(fluidPage( | |
titlePanel(h2("Polls prior to the presidential election 2015")), | |
sidebarLayout( | |
sidebarPanel( | |
checkboxGroupInput("pola", "Show results for", | |
unique(elections1$source)[1:9], unique(elections1$source)[1:9]), | |
p("Dev:", HTML("<a href='http://smarterpoland.pl'>Fundacja SmarterPoland.pl</a>")) | |
), | |
mainPanel( plotOutput("plot", width = 700, height = 550, | |
hover = hoverOpts(id = "plot_hower"))) | |
) | |
)) |
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