我有下面这个图表,并希望使其具有互动性。更具体地说,我想要一个滑块,用于将最大供应范围设置在60到120之间。我已经阅读了shiny和ggvis的文档,但无法让其正常工作。以下是我的尝试:
library(ggvis)
library(dplyr)
library(tidyr)
maximum_supply = input$maximum_supply
supply.function = function(supply)
60 - 60/maximum_supply * supply
data_frame(quantity = 0:maximum_supply) %>%
mutate(price = supply.function(quantity)) %>%
ggvis(~quantity, ~price) %>%
layer_lines()
shiny.R
library(shiny)
library(ggvis)
library(dplyr)
shinyServer(function(input, output) {
reactive({
maximum_supply = 120
supply.function = function(supply)
60 - 60/maximum_supply * supply
data_frame(quantity = 0:maximum_supply) %>%
mutate(price = supply.function(quantity)) %>%
ggvis(~quantity, ~price) %>%
layer_lines() %>%
bind_shiny("ggvis", "ggvis_ui")
})
})
ui.R
library(shiny)
library(ggvis)
library(dplyr)
shinyUI(fluidPage(
titlePanel("Example"),
sidebarLayout(
sidebarPanel(
sliderInput("maximum_supply",
"Maximum Supply",
min = 60,
max = 120,
value = 90),
),
mainPanel(
uiOutput("ggvis_ui"),
ggvisOutput("ggvis")
)
)
))