我希望在闪亮的DT中加入迷你图。它在RStudio查看器中工作正常但在Shiny中不会呈现迷你图。这是一个最小的例子。
# dependencies
require(sparkline)
require(DT)
require(shiny)
# create data with sparklines
spark_data <- data.frame(
id = c('spark1', 'spark2'),
spark = c(
spk_chr(values = 1:3, elementId = 'spark1'),
spk_chr(values = 3:1, elementId = 'spark2')
)
)
# render in RStudio viewer (this works)
tbl <- datatable(spark_data, escape = FALSE)
spk_add_deps(tbl)
# render in Shiny (no sparklines rendered in DT)
ui <- fluidPage(
sparklineOutput("test_spark"),
dataTableOutput("tbl")
)
server <- function(input, output) {
# sparkline outside DT (works fine) - also ensures sparkline dependencies are attached
output$test_spark <- renderSparkline(sparkline(1:3))
# sparkline inside DT (does not render)
output$tbl <- renderDataTable(
expr = spark_data,
escape = FALSE
)
}
shinyApp(ui = ui, server = server)
答案 0 :(得分:3)
我修改了您的代码以生成迷你图。我引用了这个link来生成迷你图。
require(sparkline)
require(DT)
require(shiny)
# create data
spark_data1<- data.frame(id = c('spark1', 'spark2'),
spark = c("1,2,3", "3,2,1"))
ui <- fluidPage(
sparklineOutput("test_spark"),
DT::dataTableOutput("tbl")
)
server <- function(input, output) {
line_string <- "type: 'line', lineColor: 'black', fillColor: '#ccc', highlightLineColor: 'orange', highlightSpotColor: 'orange'"
cd <- list(list(targets = 1, render = JS("function(data, type, full){ return '<span class=sparkSamples>' + data + '</span>' }")))
cb = JS(paste0("function (oSettings, json) {\n $('.sparkSamples:not(:has(canvas))').sparkline('html', { ",
line_string, " });\n}"), collapse = "")
output$tbl <- DT::renderDataTable({
dt <- DT::datatable(as.data.frame(spark_data1), rownames = FALSE, options = list(columnDefs = cd,fnDrawCallback = cb))
})
}
shinyApp(ui = ui, server = server)
希望它有所帮助!
答案 1 :(得分:2)
老问题,我知道,但根据问题Add label to sparkline plot in datatable中的信息,我认为解决方案是您最初尝试的解决方案,只需几行。在这里,我修剪了它在观察器中工作的部分,并添加了使迷你图工作所需的内容。
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