r - R Shiny - 使用 DateSlider 动态过滤 ggplot2 图表
问题描述
有很多这样的相关问题,我试过他们没有锻炼,所以我发布了一个新问题。
我的样本数据
Week_End Product nts
2021-10-22 A 17
2021-10-15 B 12
2021-10-08 C 18
2021-10-01 A 37
2021-09-24 B 46
2021-09-17 C 27
2021-09-10 A 31
2021-09-03 A 45
2021-08-27 B 23
2021-08-20 B 12
我使用代码绘制了条形图
server <- function(input, output,session) {
nt_data <- reactive({
chart_nts <- perf_ind %>%
filter(product %in% input$productid & (week_end >= input$start_dt & week_end <= input$end_dt)) %>%
group_by(week_end,product) %>%
summarise(c_nts = sum(nts))
})
observe({
updateSelectizeInput(session,"productid",choices = prod_dim$prod_nm)
})
output$ntsplot <- renderPlot({
dateid<-input$dateid
g <- ggplot(nt_data(),aes(y= c_nts, x = week_end))
g + geom_bar(stat = "sum")
})
}
我的 UI 代码看起来像
sidebarLayout(position = "left",
sidebarPanel(
selectizeInput("productid", "Select product","Names"),
sliderInput("dateid",
"Slide your Date:",
min = as.Date(date_range$start_dt,"%Y-%m-%d"),
max = as.Date(date_range$end_dt,"%Y-%m-%d"),
value=as.Date(date_range$asofdate,"%Y-%m-%d"),
timeFormat="%Y-%m-%d")
),
mainPanel(
fluidRow(
splitLayout(cellWidths = c("50%", "50%"), plotOutput("ntsplot"), plotOutput(""))
)
)
)
我所需要的只是当我使用日期滑块时,我的图表应该相应地改变,因为我已经这样做了
output$ntplot <- renderPlot({
dateid<-input$dateid
data <- nt_data %>%
filter (week_end >= input$start_dt & week_end <= input$end_dt) %>%
g <- ggplot(data(),aes(y= c_nts, x = week_end))
g + geom_bar(stat = "sum")
})
和
nt_data <- reactive({
chart_nts <- perf_ind %>%
filter(product %in% input$productid & (week_end >= input$start_dt & week_end <= input$end_dt)) %>%
group_by(week_end,product) %>%
summarise(c_nts = sum(nts))
})
DateRange 值我从数据库中获取它。
当我执行时,我收到以下错误
Warning: Error in : Problem with `filter()` input `..1`.
x Input `..1` must be of size 4842 or 1, not size 0.
我在这里缺少的帮助我理解!谢谢你的帮助!!
解决方案
不知道你想怎么用sliderInput
。我用dateRangeInput()
. 尝试这个
prod <- read.table(text=
"week_end product nts
2021-10-22 A 17
2021-10-15 B 12
2021-10-08 C 18
2021-10-01 A 37
2021-09-24 B 46
2021-09-17 C 27
2021-09-10 A 31
2021-09-03 A 45
2021-08-27 B 23
2021-08-20 B 12", header=T)
ui <- fluidPage(
sidebarLayout(position = "left",
sidebarPanel(
selectizeInput("productid", "Select product","Names"),
dateRangeInput("date_range", "Period you want to see:",
start = min(prod$week_end),
end = max(prod$week_end),
min = min(prod$week_end),
max = max(prod$week_end)
)#,
# sliderInput("dateid",
# "Slide your Date:",
# min = as.Date(date_range$start_dt,"%Y-%m-%d"),
# max = as.Date(date_range$end_dt,"%Y-%m-%d"),
# value=as.Date(date_range$asofdate,"%Y-%m-%d"),
# timeFormat="%Y-%m-%d")
),
mainPanel(
fluidRow(
splitLayout(cellWidths = c("50%", "50%"), plotOutput("ntplot"), DTOutput("t1"))
)
)
)
)
server <- function(input, output,session) {
nt_data <- reactive({
chart_nts <- prod %>%
dplyr::filter(product %in% input$productid & (week_end >= input$date_range[1] & week_end <= input$date_range[2])) %>%
group_by(week_end,product) %>%
dplyr::summarise(c_nts = sum(nts))
data.frame(chart_nts)
})
output$t1 <- renderDT({nt_data()})
observe({
updateSelectizeInput(session,"productid",choices = prod$product)
})
output$ntplot <- renderPlot({
#dateid<-input$dateid
data <- nt_data() # %>% dplyr::filter(week_end >= input$date_range[1] & week_end <= input$date_range[2])
g <- ggplot(data,aes(y= c_nts, x = week_end)) +
geom_bar(stat = "identity")
g
})
}
shinyApp(ui, server)
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