我正在尝试通过在plotly的交互式图例中取消选择来隐藏散点图中用户隐藏的迹线。
我已经阅读了这篇SO帖子,下面的评论中也链接了类似的问题,这使我更接近解决方案
当前的解决方案仅能部分满足我的需求。我正在寻求改进的两件事是: -如何查看单击了哪个地块的图例(查看源“ id”?) -现在,我看到单击了图例条目,但是我需要能够看到单击的是“ ON”(显示跟踪)还是“ OFF”
我正在寻找的输出看起来像这样:
input$trace_plot1
:然后是所有已关闭且已打开的迹线的列表,或者是每次单击都显示一个迹线nr,但它告诉您该特定迹线现在是“ ON”还是“ OFF”
对我来说,目标是将隐藏和显示的内容链接到数据中我所有组的概述,用户现在可以为他们提供新的名称,颜色,并选择保留或删除该组。按钮后面有一个T / F状态开关。我想将按钮的T / F状态链接到特定图的“显示” /“隐藏”轨迹(因为我的应用程序中有5个这些图的副本,显示了分析过程中不同阶段的数据
这是我的尝试,对传奇没有任何反应,只是对人兽共鸣:
library(plotly)
library(shiny)
library(htmlwidgets)
js <- c(
"function(el, x){",
" el.on('plotly_legendclick', function(evtData) {",
" Shiny.setInputValue('trace', evtData.data[evtData.curveNumber].name);",
" });",
"}")
iris$group <- c(rep(1,50), rep(2, 50), rep(3,50))
ui <- fluidPage(
plotlyOutput("plot1"),
plotlyOutput("plot2"),
verbatimTextOutput("legendItem")
)
server <- function(input, output){
output$plot1 <- renderPlotly({
p <- plot_ly(source = 'plotly1', data = iris, x = ~Sepal.Length, y = ~Petal.Length, color = ~as.factor(group), type = 'scatter', mode = 'markers') %>%
layout(showlegend = TRUE)
p %>% onRender(js)
})
output$plot2 <- renderPlotly({
p <- plot_ly(source = 'plotly2', data = iris, x = ~Sepal.Length, y = ~Petal.Length, color = ~as.factor(group), type = 'scatter', mode = 'markers') %>%
layout(showlegend = TRUE)
p %>% onRender(js)
})
output$legendItem <- renderPrint({
d <- input$trace
if (is.null(d)) "Clicked item appear here" else d
})
}
shinyApp(ui = ui, server = server)
编辑:感谢S.L的广泛解答。
library(plotly)
library(shiny)
library(htmlwidgets)
js <- c(
"function(el, x, inputName){",
" var id = el.getAttribute('id');",
" var d3 = Plotly.d3;",
" el.on('plotly_restyle', function(evtData) {",
" var out = {};",
" d3.select('#' + id + ' g.legend').selectAll('.traces').each(function(){",
" var trace = d3.select(this)[0][0].__data__[0].trace;",
" out[trace.name] = trace.visible;",
" });",
" Shiny.setInputValue(inputName, out);",
" });",
"}")
ui <- fluidPage(
plotlyOutput("plot1"),
plotlyOutput("plot2"),
verbatimTextOutput("tracesPlot1"),
verbatimTextOutput("tracesPlot2")
)
server <- function(input, output, session) {
output$plot1 <- renderPlotly({
p1 <- plot_ly()
p1 <- add_trace(p1, data = mtcars, x = ~disp, y = ~mpg, type = 'scatter', mode = 'markers', color = ~as.factor(cyl))
p1 %>% onRender(js, data = "tracesPlot1")
})
output$plot2 <- renderPlotly({
p2 <- plot_ly()
p2 <- add_trace(p2, data = mtcars, x = ~disp, y = ~mpg, type = 'scatter', mode = 'markers', color = ~as.factor(cyl))
p2 %>% onRender(js, data = "tracesPlot2") })
output$tracesPlot1 <- renderPrint({ unlist(input$tracesPlot1) })
output$tracesPlot2 <- renderPrint({unlist(input$tracesPlot2)
})
}
shinyApp(ui, server)
答案 0 :(得分:4)
有帮助吗?
library(plotly)
library(shiny)
library(htmlwidgets)
js <- c(
"function(el, x){",
" el.on('plotly_legendclick', function(evtData) {",
" Shiny.setInputValue('trace', evtData.data[evtData.curveNumber].name);",
" });",
" el.on('plotly_restyle', function(evtData) {",
" Shiny.setInputValue('visibility', evtData[0].visible);",
" });",
"}")
ui <- fluidPage(
plotlyOutput("plot"),
verbatimTextOutput("legendItem")
)
server <- function(input, output, session) {
output$plot <- renderPlotly({
p <- plot_ly()
for(name in c("drat", "wt", "qsec"))
{
p = add_markers(p, x = as.numeric(mtcars$cyl), y = as.numeric(mtcars[[name]]), name = name)
}
p %>% onRender(js)
})
output$legendItem <- renderPrint({
trace <- input$trace
ifelse(is.null(trace),
"Clicked item will appear here",
paste0("Clicked: ", trace,
" --- Visibility: ", input$visibility)
)
})
}
shinyApp(ui, server)
双击一个图例项时,以前的解决方案存在问题。这是一个更好的解决方案:
library(plotly)
library(shiny)
library(htmlwidgets)
js <- c(
"function(el, x){",
" var d3 = Plotly.d3;",
" el.on('plotly_restyle', function(evtData) {",
" var out = {};",
" d3.select('g.legend').selectAll('.traces').each(function(){",
" var trace = d3.select(this)[0][0].__data__[0].trace;",
" out[trace.name] = trace.visible;",
" });",
" Shiny.setInputValue('traces', out);",
" });",
"}")
ui <- fluidPage(
plotlyOutput("plot"),
verbatimTextOutput("legendItem")
)
server <- function(input, output, session) {
output$plot <- renderPlotly({
p <- plot_ly()
for(name in c("drat", "wt", "qsec"))
{
p = add_markers(p, x = as.numeric(mtcars$cyl), y = as.numeric(mtcars[[name]]), name = name)
}
p %>% onRender(js)
})
output$legendItem <- renderPrint({
input$traces
})
}
shinyApp(ui, server)
如果有多个图,请在图例选择器中添加图ID,然后使用函数来生成JavaScript代码:
js <- function(i) {
c(
"function(el, x){",
" var id = el.getAttribute('id');",
" var d3 = Plotly.d3;",
" el.on('plotly_restyle', function(evtData) {",
" var out = {};",
" d3.select('#' + id + ' g.legend').selectAll('.traces').each(function(){",
" var trace = d3.select(this)[0][0].__data__[0].trace;",
" out[trace.name] = trace.visible;",
" });",
sprintf(" Shiny.setInputValue('traces%d', out);", i),
" });",
"}")
}
然后执行p1 %>% onRender(js(1))
,p2 %>% onRender(js(2))
,...,您将在input$traces1
,input$traces2
,...中获得有关迹线可见性的信息。
另一种方法是借助data
的{{1}}参数在JavaScript函数的第三个参数中传递所需的名称:
onRender