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我正在構建一個Shiny應用程序,並希望反應性控制哪些列顯示在熱圖中。我希望首先顯示所有列,然後通過取消選擇checkboxGroupInput
中的列來對其進行分組。爲反應熱圖選擇列
當我運行代碼時,熱圖不會出現。我通過查看df_select
數據幀來嘗試故障排除,但它最初只有「mpg」列,它應該包含所有這些列表(mpg:carb)。包括View(df_select)
會引發錯誤,所以會在下面註釋掉。
任何幫助將不勝感激。
app.R
library(ggplot2)
library(d3heatmap)
library(dplyr)
library(shiny)
## ui.R
ui <- fluidPage(
sidebarPanel(
h5(strong("Dendrogram:")),
checkboxInput("cluster_row", "Cluster Rows", value=FALSE),
checkboxInput("cluster_col", "Cluster Columns", value=FALSE),
checkboxGroupInput("col_list", "Select col to include:", names(mtcars), selected=names(mtcars)),
h5(strong("Sort:")),
checkboxInput("check_sort", "Sort (Yes/No)", value=FALSE),
selectInput("sort", "Sort:", names(mtcars), selected="mpg")
),
mainPanel(
h4("Heatmap"),
d3heatmapOutput("heatmap", width = "100%", height="600px")
)
)
## server.R
server <- function(input, output) {
df_select <- reactive({
all <- names(mtcars)
print(all) #debug
selection <- input$col_list
print(selection) #debug
if("All" %in% input$col_list || length(input$col_list) == 0){
selection <- all
}else{
selection <- input$col_list
}
df_select <- select_(mtcars, selection)
#View(df_select) #debug
})
df_sort <- reactive({
df_sort <- if(input$check_sort==FALSE) df_select() else arrange_(df_select(), input$sort)
})
output$heatmap <- renderD3heatmap({
d3heatmap(df_sort(),
colors = "Blues",
if (input$cluster_row) RowV = TRUE else FALSE,
if (input$cluster_col) ColV = TRUE else FALSE,
yaxis_font_size = "7px"
)
})
}
shinyApp(ui = ui, server = server)
謝謝jenesaisquoi!這解決了這個問題。 – sean