R 雷汉松表;闪亮:根据添加的列创建条件打印
我想在更新了一个闪亮的表格后制作一个绘图(ggplot),但我似乎无法使它工作-绘图没有出现。只有在为x和y创建列后,才会出现绘图。理想情况下,点显示为编辑到表中的值。下面是一些可复制的代码(),我对其进行了扩展R 雷汉松表;闪亮:根据添加的列创建条件打印,r,ggplot2,shiny,reactive-programming,rhandsontable,R,Ggplot2,Shiny,Reactive Programming,Rhandsontable,我想在更新了一个闪亮的表格后制作一个绘图(ggplot),但我似乎无法使它工作-绘图没有出现。只有在为x和y创建列后,才会出现绘图。理想情况下,点显示为编辑到表中的值。下面是一些可复制的代码(),我对其进行了扩展 library(rhandsontable) library(tidyverse) ui <- fluidPage( h2("The mtcars data"), rHandsontableOutput("mytable"), textInput('NewCol',
library(rhandsontable)
library(tidyverse)
ui <- fluidPage(
h2("The mtcars data"),
rHandsontableOutput("mytable"),
textInput('NewCol', 'Enter new column name'),
radioButtons("type", "Column type:",
c("Integer" = "integer",
"Floating point" = "numeric",
"Text" = "character")),
actionButton("goButton", "Update Table"),
plotOutput("plot")
)
server <- function(input, output) {
# g <- reactiveValues(d=NULL) #define it ouside
mydata <- mtcars[1:5,]
output$mytable = renderRHandsontable(df())
df <- eventReactive(input$goButton, {
if(input$NewCol!="" && !is.null(input$NewCol) && input$goButton>0){
if (input$type == "integer") v1 <- integer(NROW(mydata))
if (input$type == "numeric") v1 <- numeric(NROW(mydata))
if (input$type == "character") v1 <- character(NROW(mydata))
newcol <- data.frame(v1)
names(newcol) <- input$NewCol
mydata <<- cbind(mydata, newcol)
}
rhandsontable(mydata, stretchH = "all")
}, ignoreNULL = FALSE)
observe(if (!is.null(input$mytable)) mydata <<- hot_to_r(input$mytable))
output$plot <- renderPlot({
if (req(mydata$x) >= 0 & req(mydata$y) >= 0)
ggplot(mydata, aes(x=mydata$x,y=mydata$y)) +
geom_point()
# else if (req(mydata$x) = 0 & req(mydata$y) = 0) {
# print("empty")
# }
})
}
shinyApp(ui,server)
库(rhandsontable)
图书馆(tidyverse)
ui我不知道这些功能是如何工作的(rhandsontable
和hot\u to\u r
),但您想要做的似乎与经典的reactiveValues
框架兼容,就像您的服务器代码中这样:
r = reactiveValues(mydata=mtcars[1:5,])
output$mytable = renderRHandsontable(df())
df <- eventReactive(input$goButton, {
if(input$NewCol!="" && !is.null(input$NewCol) && input$goButton>0){
if (input$type == "integer") v1 <- integer(NROW(r$mydata))
if (input$type == "numeric") v1 <- numeric(NROW(r$mydata))
if (input$type == "character") v1 <- character(NROW(r$mydata))
newcol <- data.frame(v1)
names(newcol) <- input$NewCol
r$mydata <- cbind(r$mydata, newcol)
}
rhandsontable(r$mydata, stretchH = "all")
}, ignoreNULL = FALSE)
observe({if (!is.null(input$mytable)) r$mydata <- hot_to_r(input$mytable)})
output$plot <- renderPlot({
if(is.null(r$mydata$x) | is.null(r$mydata$y)) {return(NULL)}
ggplot(r$mydata, aes(x=x,y=y)) +
geom_point()}) }
r=reactiveValues(mydata=mtcars[1:5,])
输出$mytable=renderHandsOnTable(df())
df(0){
如果(input$type==“integer”)v1i将标题修改得更具体,如果它不适合您,请随意取回:-)