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server.R
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# This is the server logic for a Shiny web application.
# You can find out more about building applications with Shiny here:
#
# http://shiny.rstudio.com
#
source(file = 'history_manipulation.R')
library(shiny)
shinyServer(function(input, output, session) {
values = reactiveValues()
values$actualDate = dates.rng[2]
<<<<<<< HEAD
# +------------------------------------+
# | Set correct date
# +------------------------------------+
observe({
input$dateSlider
isolate({
actDate = values$actualDate
inpDate = input$dateSlider
if(nrow(filter(smile.data, tms == inpDate)) == 0){
if(inpDate > actDate){
corDate = (smile.data %>% filter(tms >= inpDate) %>% filter(tms == min(tms)) %>% select(tms))[[1]]
} else {
corDate = (smile.data %>% filter(tms <= inpDate) %>% filter(tms == max(tms)) %>% select(tms))[[1]]
}
} else {
corDate = inpDate
}
})
values$actualDate = corDate
=======
# +--------------------------------------+
# | Update date slider at RTS chart click
# +--------------------------------------+
observe({
clickedRts = nearPoints(rts.data, (input$rts_click), xvar = 'Dates', yvar = 'Close')
if(nrow(clickedRts) > 0)
inpDate = clickedRts[1, c('Dates'), drop = T]
updateDateInput(session, inputId = 'dateSlider', value = inpDate, min = dates.rng[1], max = dates.rng[2])
>>>>>>> origin/master
})
# +------------------------------------+
<<<<<<< HEAD
# | Draw smile chart
# +------------------------------------+
output$smileChart = renderPlot({
try({
the.date = values$actualDate
smiles.data = CalcSmilesSeries(strikeRng = input$strikeRngSlider,
smileDate = the.date,
nearest = input$nearestNum)
rts.point = rts.data %>% filter(Dates == the.date) %>% select(Close)
iv.chart = ggplot(data = smiles.data, aes(x = Strike, y = IV, fill=tdays, alpha=tdays)) + geom_line(size = 1.5, color = 'blue') +
=======
# | Set correct date
# +------------------------------------+
observe({
input$dateSlider
actDate = isolate(values$actualDate)
inpDate = isolate(input$dateSlider)
print(paste('actDate = ', actDate,', inpDate = ', inpDate, sep=''))
if(nrow(filter(smile.data, tms == inpDate)) == 0){
if(inpDate > actDate){
corDate = (smile.data %>% filter(tms >= inpDate) %>% filter(tms == min(tms)) %>% select(tms))[[1]]
} else {
corDate = (smile.data %>% filter(tms <= inpDate) %>% filter(tms == max(tms)) %>% select(tms))[[1]]
}
} else {
corDate = inpDate
}
values$actualDate = corDate
})
# +------------------------------------+
# | Draw smile chart
# +------------------------------------+
output$smileChart = renderPlot({
try({
the.date = values$actualDate
smiles.data = CalcSmilesSeries(strikeRng = input$strikeRngSlider, smileDate = the.date, nearest = input$nearestNum)
rts.point = rts.data %>% filter(Dates == the.date) %>% select(Close)
iv.chart = ggplot(data = smiles.data, aes(x = Strike, y = IV, fill = tdays, alpha = tdays)) + geom_line(size = 1.5, color = 'blue') +
>>>>>>> origin/master
theme_bw(base_size = 16) + scale_alpha_discrete(name = "Days til exp") + theme(legend.position = 'bottom')
if(input$checkLimit)
iv.chart = iv.chart + scale_y_continuous(limit = c(input$yminNum, input$ymaxNum))
iv.chart = iv.chart + geom_vline(xintercept = as.numeric(rts.point$Close[[1]]) * 100, color = 'red', linetype = 'dotted')
iv.chart
})
<<<<<<< HEAD
}, width = 300, height = 300)
=======
})
>>>>>>> origin/master
# +------------------------------------+
# | Draw RTS chart
# +------------------------------------+
output$rtsChart = renderPlot({
<<<<<<< HEAD
values$actualDate
=======
>>>>>>> origin/master
try({
chart.data = rts.data %>% filter(Dates >= dates.rng[1] & Dates <= dates.rng[2])
ggplot(data = chart.data, aes(x = Dates, y = Close) ) + geom_line() +
geom_vline(xintercept = as.numeric(values$actualDate), color = 'red', linetype = 'dotted')
})
<<<<<<< HEAD
}, width = 500, height = 250)
# +--------------------------------------+
# | Update date slider at RTS chart click
# +--------------------------------------+
observe({
clickedRts = nearPoints(rts.data, input$rts_click, xvar = 'Dates', yvar = 'Close')
=======
})
output$rtsPlotText = renderPrint({
#str(input$rts_click)
>>>>>>> origin/master
if(nrow(clickedRts) > 0){
inpDate = clickedRts[1, c('Dates'), drop = T]
updateDateInput(session, inputId = 'dateSlider', value = inpDate, min = dates.rng[1], max = dates.rng[2])
}
})
})