我已经使用VisNetwork和Shiny构建了一个网络图。我对结果非常满意。我想要做的是使用搜索栏(例如:http://projects.flowingdata.com/tut/interactive_network_demo/)来搜索我的数据中的节点。
我正在使用shinydashboard。所以我尝试使用" sidebarSearchForm"。但是,当我运行应用程序并尝试使用搜索表单时,不会返回任何内容。
这是我的ui代码:
ui <- dashboardPage(skin = "black",
dashboardHeader(),
dashboardSidebar(
sidebarMenu(
menuItem("Network", tabName = "network", icon = icon("dashboard")),
sidebarSearchForm(textId = "searchText", buttonId = "searchButton", label = "Search...")
)
),
dashboardBody(
box(
title = "Network", status = "warning", solidHeader = TRUE, collapsible = TRUE,
visNetworkOutput("network_proxy", height = 700)
)
)
)#end ui
以下是服务器的代码;
server <- function(input, output) {
output$network_proxy <- renderVisNetwork({
visNetwork(my.nodes, my.edges, height = "100%")
})
output$searchString <- renderText({
if (input$searchButton == 0)
return()
isolate({input$searchString})
})
} #end server
答案 0 :(得分:2)
您可以使用visNetworkProxy
和visSelectNodes
执行此操作,例如使用简单的grepl
:
nodes <- data.frame(id = 1:3, label = c("A", "B", "A"))
edges <- data.frame(from = c(1,2), to = c(1,3))
require(visNetwork)
require(shiny)
require(shinydashboard)
ui <- dashboardPage(skin = "black",
dashboardHeader(),
dashboardSidebar(
sidebarMenu(
menuItem("Network", tabName = "network", icon = icon("dashboard")),
sidebarSearchForm(textId = "searchText", buttonId = "searchButton", label = "Search...")
)
),
dashboardBody(
box(
title = "Network", status = "warning", solidHeader = TRUE, collapsible = TRUE,
visNetworkOutput("network_proxy", height = 700)
)
)
)
server <- function(input, output, session) {
output$network_proxy <- renderVisNetwork({
visNetwork(nodes, edges, height = "100%")
})
observe({
if(input$searchButton > 0){
isolate({
print(input$searchText)
current_node <- nodes[grep(input$searchText, nodes$label), "id"]
print(current_node)
visNetworkProxy("network_proxy") %>% visSelectNodes(id = current_node)
})
}
})
} #end server
shiny::shinyApp(ui, server)
答案 1 :(得分:0)
你看看这个:
http://datastorm-open.github.io/visNetwork/shiny.html
检查visNetworkProxy
部分。
此外,演示代码附带包含您想要实现的东西。