在reactable r包中使用分组行时,如何呈现列合计(使用javascript)?
我将在reactable r包中使用分组行时,如何呈现列合计(使用javascript)?,javascript,r,reactable,Javascript,R,Reactable,我将串扰与可反应结合使用。在表中,我使用分组行。现在我需要使用javascript添加一个列总数 --- title: "Focal Chart (Top)" output: flexdashboard::flex_dashboard: orientation: rows --- Inputs {.sidebar} ------------------------------------- ```{r} library(crosstalk) library(reactable)
串扰
与可反应
结合使用。在表中,我使用分组行。现在我需要使用javascript添加一个列总数
---
title: "Focal Chart (Top)"
output:
flexdashboard::flex_dashboard:
orientation: rows
---
Inputs {.sidebar}
-------------------------------------
```{r}
library(crosstalk)
library(reactable)
cars <- MASS::Cars93[1:20, c("Manufacturer", "Model", "Type", "Price")]
data <- SharedData$new(cars)
filter_checkbox("type", "Type", data, ~Type)
filter_slider("price", "Price", data, ~Price, width = "100%")
filter_select("mfr", "Manufacturer", data, ~Manufacturer)
```
Row {data-height=500}
-------------------------------------
### Chart 1
```{r}
reactable(
data,
groupBy = "Manufacturer",
searchable = TRUE,
columns = list(
Price = colDef(aggregated = JS("
function(cellInfo) {
// Calculate sum of all values in visible rows
var values = cellInfo.subRows.map(function(row) { return row.Price})
var total = values.reduce(function(a, b) { return a + b }, 0)
return total.toFixed(1)
}
"), footer = JS("function(colInfo) {
var values = colInfo.data.map(function(row) { return row[colInfo.column.id] })
var total = values.reduce(function(a, b) { return a + b }, 0)
return '$' + total.toFixed(2)
}")
),
Manufacturer = colDef(footer = "Total")
),
defaultColDef = colDef(footerStyle = list(fontWeight = "bold"))
)
```
Row {data-height=500}
-------------------------------------
### empty
```{r}
```
### empty
```{r}
```
---
标题:“焦点图(顶部)”
输出:
flexdashboard::flex_仪表板:
方向:行
---
输入{.sidebar}
-------------------------------------
```{r}
图书馆(串扰)
库(可反应)
汽车我认为这类产品符合您的要求,但如果您搜索一家制造商,它不会刷新总数
reactable(
data,
groupBy = "Manufacturer",
searchable = TRUE,
columns = list(
Price = colDef(footer = function(values) sprintf("$%.2f", sum(values))),
Manufacturer = colDef(footer = "Total")
),
defaultColDef = colDef(footerStyle = list(fontWeight = "bold"))
)
最初的回答是在,只是复制到这里:
这是可反应文档中的一个疏忽——自定义呈现文档没有提到当您分组/嵌套数据时,colInfo.data
的外观:
通常,data
将是单个行数据对象的数组,如
{
"Manufacturer": "Acura",
"Model": "Integra",
"Type": "Small",
"Price": 15.9
}
但是,当对行进行聚合时,单个子行数据将嵌套在\u subRows
属性下:
// For an aggregated row with 2 sub rows
{
"Manufacturer": "Acura",
"_subRows": [
{
"Manufacturer": "Acura",
"Model": "Integra",
"Type": "Small",
"Price": 15.9
},
{
"Manufacturer": "Acura",
"Model": "Legend",
"Type": "Midsize",
"Price": 33.9
}
]
}
您可以在JS函数中插入console.log(colInfo)
,以浏览浏览器JavaScript控制台中的完整数据结构:
footer = JS("function(colInfo) {
console.log(colInfo)
}")
由于单个行数据现在是嵌套的,因此将其汇总起来需要做更多的工作,但这里有一种方法使用两个forEach
循环:
library(reactable)
data <- MASS::Cars93[1:20, c("Manufacturer", "Model", "Type", "Price")]
reactable(
data,
groupBy = "Manufacturer",
searchable = TRUE,
columns = list(
Price = colDef(
aggregated = JS("function(cellInfo) {
// Calculate sum of all values in visible rows
var values = cellInfo.subRows.map(function(row) { return row.Price})
var total = values.reduce(function(a, b) { return a + b }, 0)
return total.toFixed(1)
}"),
footer = JS("function(colInfo) {
var total = 0
colInfo.data.forEach(function(row) {
row._subRows.forEach(function(data) {
total += data[colInfo.column.id]
})
})
return '$' + total.toFixed(2)
}")
),
Manufacturer = colDef(footer = "Total")
),
defaultColDef = colDef(footerStyle = list(fontWeight = "bold"))
)
库(可反应)
是的,我需要点心:),但是谢谢!我会奖励它的。欢迎。我在相声和可反应的战线上打自己的仗,所以没有太多时间深入研究这个问题。总有一天!祝你好运。