Nothing
server = function(input, output, session) {
output$mtbf <- renderPlotly({
mtbf <- seq(1,500,1)
accept <- ppois(input$fails, input$ttt/mtbf)
datas <- data.frame(mtbf, accept)
observe({
if(input$thresh>=input$objective) {
updateSliderInput(session, "objective", value = input$thresh+5) }
if(input$objective>=input$contract) {
updateSliderInput(session, "contract", value = input$objective+5) }
})
p1 <- plot_ly(datas,
type = 'scatter',
mode = 'lines',
x = mtbf,
y = accept,
showlegend = F,
text = paste(
'Pr(accept) = ', round(accept, digits = 5),'<br>',
'True MTBF = ', mtbf,'<br>',
'Allowed Failures = ', input$fails,'<br>',
'Total Test Time = ', input$ttt),
hoverinfo = 'text')
p2 <- add_segments(p1,
x = input$thresh,
y = 0,
xend = input$thresh,
yend = ppois(input$fails, input$ttt/input$thresh),
showlegend = F,
hoverinfo = 'none')
p3 <- add_segments(p2,
x = input$objective,
y = 0,
xend = input$objective,
yend = ppois(input$fails, input$ttt/input$objective),
showlegend = F,
hoverinfo = 'none')
p4 <- add_segments(p3,
x = input$contract,
y = 0,
xend = input$contract,
yend = ppois(input$fails, input$ttt/input$contract),
showlegend = F,
hoverinfo = 'none')
p5 <-
layout(p4,
yaxis = list(title = "Probability of Acceptance - Pr(accept)",
range = extendrange(c(0,ppois(input$fails,
input$ttt/input$contract)*1.25)),
titlefont = list(size = 16)),
xaxis = list(title = 'True System Reliability - MTBF',
range = extendrange(c(input$thresh,input$contract), f = .5),
titlefont = list(size = 16)),
annotations = list(
list(x = c(input$thresh),
y = ppois(input$fails, input$ttt/input$thresh),
text = 'Threshold ',
showarrow = T,
ay = -40,
ax = -40,
arrowhead = 0,
arrowcolor = 'orange'),
list(x = input$objective,
y = ppois(input$fails, input$ttt/input$objective),
text = "Objective",
showarrow = T,
ay = -60,
ax = -50,
arrowhead = 0,
arrowcolor = 'green'),
list(x = input$contract,
y = ppois(input$fails, input$ttt/input$contract),
text = "Contract",
showarrow = T,
ay = -80,
ax = -60,
arrowhead = 0,
arrowcolor = 'red')),
font = list(size = 16))
})
}
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