我正在尝试做的是允许用户将配置/查找excel表传递给Shiny,以光泽显示此表,允许用户以Shiny进行单元格编辑,并使用已编辑的值从可编辑表格中进行计算。我的问题出在最后一步“使用从可编辑表中编辑的值进行计算”。
excel文件包含2个标签,其中包含以下内容的数据:
Tab1名称:“参数” data.frame(Name = c(“ a”,“ b”,“ c”),Value = c(1:3))
Tab2名称:“ parameters2” data.frame(Name = c(“ a”,“ b”,“ c”),Value = c(4:6))
理想的闪亮应用将执行以下操作:
1)在上载时,执行计算,将Tab 1和Tab 2的第一值保持不变。这将是1 + 4 = 5。
2)如果用户将Tab 1的值编辑为1到8,则计算结果将为8 + 4 = 12。
实际上,如果用户对其进行了任何编辑,我想使用编辑后的表格值来更新我的所有计算。我知道可以通过仅以闪亮的方式上传新文件来完成此操作,但我宁愿允许他们以闪亮的方式上传,而不是上传新文件。
这是我的闪亮应用程序。感谢任何帮助/指导!
library(shiny)
library(DT)
shinyApp(
ui <- fluidPage(
fileInput(inputId = "config", label = "Upload Configuration File",
multiple = F, accept = c(".xlsx", ".xls")),
verbatimTextOutput("txt"),
tagList(tags$head(tags$style(type = 'text/css','.navbar-brand{display:none;}')),
navbarPage(title = "",
tabPanel(title = "Parameters",
dataTableOutput(outputId = "edit.param", width = 2)),
tabPanel(title = "Parameters2",
dataTableOutput(outputId = "edit.param2", width = 2))
)
)
),
server = function(input, output, session) {
config.path = reactive({
inFile = input$config
if(is.null(inFile)) {
return(NULL)
} else {
return(inFile$datapath)
}
})
df.param = reactive({
read_excel(path = config.path(), sheet = "parameters")
})
df.param2 = reactive({
read_excel(path = config.path(), sheet = "parameters2")
})
output$edit.param = renderDT(df.param(), selection = "none", server = F, editable = "cell")
output$edit.param2 = renderDT(df.param2(), selection = "none", server = F, editable = "cell")
observeEvent(input$edit.param_cell_edit, {
df.param()[input$edit.param_cell_edit$row, input$edit.param_cell_edit$col] <<- input$edit.param_cell_edit$value
})
observeEvent(input$edit.param2_cell_edit, {
df.param()[input$edit.param2_cell_edit$row, input$edit.param2_cell_edit$col] <<- input$edit.param2_cell_edit$value
})
output$txt = reactive({
df.param()$value[1] + df.param2()$value[1]
})
}
)
我也在服务器部分尝试过此操作,也没有运气:
output$edit.param = renderDT(df.param(), selection = "none", server = F, editable = "cell")
output$edit.param2 = renderDT(df.param2(), selection = "none", server = F, editable = "cell")
observe(input$edit.param_cell_edit)
observe(input$edit.param2_cell_edit)
答案 0 :(得分:1)
您可以尝试一下吗? (我没有尝试过。)
library(shiny)
library(DT)
shinyApp(
ui <- fluidPage(
fileInput(inputId = "config", label = "Upload Configuration File",
multiple = F, accept = c(".xlsx", ".xls")),
verbatimTextOutput("txt"),
tagList(tags$head(tags$style(type = 'text/css','.navbar-brand{display:none;}')),
navbarPage(title = "",
tabPanel(title = "Parameters",
dataTableOutput(outputId = "edit_param", width = 2)),
tabPanel(title = "Parameters2",
dataTableOutput(outputId = "edit_param2", width = 2))
)
)
),
server = function(input, output, session) {
config.path = reactive({
inFile = input$config
if(is.null(inFile)) {
return(NULL)
} else {
return(inFile$datapath)
}
})
df_param <- reactiveVal()
observe({
req(config.path())
df_param(read_excel(path = config.path(), sheet = "parameters"))
})
df_param2 <- reactiveVal()
observe({
req(config.path())
df_param2(read_excel(path = config.path(), sheet = "parameters2"))
})
output$edit_param = renderDT({
req(df_param())
datatable(isolate(df_param()), selection = "none", editable = "cell")
})
output$edit_param2 = renderDT({
req(df_param2())
datatable(isolate(df_param2()), selection = "none", editable = "cell")
})
proxy <- dataTableProxy("edit_param")
proxy2 <- dataTableProxy("edit_param2")
observeEvent(input$edit_param_cell_edit, {
info <- input$edit_param_cell_edit
df_param(editData(df_param(), info, proxy, resetPaging = FALSE))
})
observeEvent(input$edit_param2_cell_edit, {
info <- input$edit_param2_cell_edit
df_param2(editData(df_param2(), info, proxy2, resetPaging = FALSE))
})
output$txt = renderPrint({
df_param()$value[1] + df_param2()$value[1]
})
}
)