如何在Shiny中定义数据表的数字格式?我想只为某些列显示2位小数,但不明白应该在我的应用程序中定义它的位置。在server.R
或ui.R
?在server.R
中,这就是我在renderDataTable
中的内容:
output$woeTable <- renderDataTable({
input$tryTree
input$threshold
# The following returns data frame with numeric columns
get(input$dfDescr)[['variables']][[input$columns]][['woe']]
},
options=list(
paging = FALSE,
searching = FALSE)
)
如何格式化第2和第3列以仅显示两位小数?
答案 0 :(得分:5)
只需使用round命令:
output$woeTable <- renderDataTable({
input$tryTree
input$threshold
# The following returns data frame with numeric columns
A = get(input$dfDescr)[['variables']][[input$columns]][['woe']]
A[,2] = round(x = A[,2],digits = 2)
A[,3] = round(x = A[,3],digits = 2)
A
},
options=list(
paging = FALSE,
searching = FALSE)
)
如果您坚持使用更多数字保存数据并且仅更改输出中的表示,您还可以在fnRowCallback
函数中使用renderDataTable
选项:
output$woeTable <- renderDataTable({
input$tryTree
input$threshold
# The following returns data frame with numeric columns
get(input$dfDescr)[['variables']][[input$columns]][['woe']]
},
options=list(
paging = FALSE,
searching = FALSE,
fnRowCallback = I("function( nRow, aData, iDisplayIndex, iDisplayIndexFull ) {ind = 2; $('td:eq('+ind+')', nRow).html( (aData[ind]).toFixed(2) );}"))
)
更新DT 1.1:
你应该改变
fnRowCallback = I("function( nRow, aData, iDisplayIndex, iDisplayIndexFull ) {ind = 2; $('td:eq('+ind+')', nRow).html( (aData[ind]).toFixed(2) );}"))
到
rowCallback = I("function( nRow, aData) {ind = 2; $('td:eq('+ind+')', nRow).html( parseFloat(aData[ind]).toFixed(2) );}"))