[英]Conditional formatting in DT Data Table R Shiny
我有一個表有5個cols和第1列作為字符,其他四個作為數字。 我正在使用DT數據表在Shiny App中顯示相同的內容。 現在,我需要比較每行的四個列中的每一個,並對具有最大值的行單元進行顏色編碼 。 尋找方法來做同樣的事情。 看看這個鏈接以及StylingCells,但所有的cols都是數字。
entity <- c('entity1', 'entity2', 'entity3')
value1 <- c(21000, 23400, 26800)
value2 <- c(21234, 23445, 26834)
value3 <- c(21123, 234789, 26811)
value4 <- c(27000, 23400, 26811)
entity.data <- data.frame(entity, value1, value2, value3, value4)
header <- dashboardHeader()
sidebar <- dashboardSidebar()
body <- dashboardBody(DT::dataTableOutput("entity.dataTable"))
shinyApp(
ui = dashboardPage(header, sidebar, body),
server = function(input, output) {
output$entity.dataTable <- renderDataTable({
DT::datatable(
entity.data,
selection = "single",
filter = 'bottom',
extensions = c('Buttons', 'ColReorder', 'FixedHeader', 'Scroller'),
rownames = FALSE,
options = list(
dom = 'Bfrtip',
searching = T,
pageLength = 25,
searchHighlight = TRUE,
colReorder = TRUE,
fixedHeader = TRUE,
filter = 'top',
buttons = c('copy', 'csv', 'excel', 'print'),
paging = TRUE,
deferRender = TRUE,
scroller = TRUE,
scrollX = TRUE,
scrollY = 550
)
)
})
}
)
以下是我的問題解決方案:
library(shinydashboard)
library(DT)
library(magrittr)
entity <- c('entity1', 'entity2', 'entity3')
value1 <- c(21000, 23400, 26800)
value2 <- c(21234, 23445, 26834)
value3 <- c(21123, 234789, 26811)
value4 <- c(27000, 23400, 26811)
entity.data <- data.frame(entity, value1, value2, value3, value4)
# Create a vector of max values
max_val <- apply(entity.data[, -1], 1, max)
header <- dashboardHeader()
sidebar <- dashboardSidebar()
body <- dashboardBody(DT::dataTableOutput("entity.dataTable"))
shinyApp(
ui = dashboardPage(header, sidebar, body),
server = function(input, output) {
output$entity.dataTable <- renderDataTable({
DT::datatable(
entity.data,
selection = "single",
filter = 'bottom',
extensions = c('Buttons', 'ColReorder', 'FixedHeader', 'Scroller'),
rownames = FALSE,
options = list(
dom = 'Bfrtip',
searching = T,
pageLength = 25,
searchHighlight = TRUE,
colReorder = TRUE,
fixedHeader = TRUE,
filter = 'top',
buttons = c('copy', 'csv', 'excel', 'print'),
paging = TRUE,
deferRender = TRUE,
scroller = TRUE,
scrollX = TRUE,
scrollY = 550
)
) %>% # Style cells with max_val vector
formatStyle(
columns = 2:5,
backgroundColor = styleEqual(levels = max_val, values = rep("yellow", length(max_val)))
)
})
}
)
所以你需要做的是創建一個最大值的向量。 然后在formatStyle()
里面的輔助函數styleEqual()
使用它,如上面的代碼所示。
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