这是我的代码:
library(shiny)
library(ggplot2)
library(ggiraph)
df <- data.frame(achseX = LETTERS[1:24], achseY = 1:24, facetX = as.factor(rep(1:4, each = 6)))
server <- function(input, output) {
output$ggplot <- renderPlot({
ggplot(data = df) + geom_bar_interactive(aes(tooltip = achseY, x = achseX, y = achseY), stat = "identity") +
theme_minimal() + facet_grid(.~ facetX, scales = "free_x")
})
output$plot <- renderggiraph({
gg <- ggplot(data = df) + geom_bar_interactive(aes(tooltip = achseY, x = achseX, y = achseY), stat = "identity") +
theme_minimal() + facet_grid(.~ facetX, scales = "free_x")
return(ggiraph(code = print(gg), selection_type = "multiple", zoom_max = 4,
hover_css = "fill:#FF3333;stroke:black;cursor:pointer;",
selected_css = "fill:#FF3333;stroke:black;"))
})
}
ui <- fluidPage(
"GGPLOT2:",
plotOutput("ggplot"),
"GGIRAPH:",
ggiraphOutput("plot", width = "500px", height = "1000px")
)
shinyApp(ui = ui, server = server)结果如下:

正如您在代码中所看到的那样,第一个barplot是一个ggplot,它以其应有的方式工作。它响应于网站,并具有矩形格式。ggiraph保持正方形格式,不适合页面。
我怎么才能让这个计时器看起来像个眼镜蛇呢?
我尝试了几个宽度和高度参数的组合,也包括width = "auto"和height = "auto"。这使得ggi相图符合页面,但仍然是正方形格式。
发布于 2017-09-15 10:22:13
发布于 2017-08-02 13:57:35
您可以通过在ui中使用一定数量的js代码来使ui响应。类似于this答案的东西。
不同的是,ggiraph函数希望输入以英寸为单位,因此我们需要将像素转换为英寸。它的公式是inches = pixels/dpi。因此,ui中的js代码传递窗口高度,以及屏幕的dpi,从中我们可以计算长度(以英寸为单位),然后可以传递给ggiraph函数,从而使绘图响应ui。
我已经修改了你的例子来做到这一点。希望能帮上忙!
library(shiny)
library(ggplot2)
library(ggiraph)
df <- data.frame(achseX = LETTERS[1:24], achseY = 1:24, facetX = as.factor(rep(1:4, each = 6)))
server <- function(input, output, session) {
output$ggplot <- renderPlot({
ggplot(data = df) + geom_bar_interactive(aes(tooltip = achseY, x = achseX, y = achseY), stat = "identity") +
theme_minimal() + facet_grid(.~ facetX, scales = "free_x")
})
output$plot <- renderggiraph({
gg <- ggplot(data = df) + geom_bar_interactive(aes(tooltip = achseY, x = achseX, y = achseY), stat = "identity") +
theme_minimal() + facet_grid(.~ facetX, scales = "free_x")
return(ggiraph(code = print(gg), selection_type = "multiple", zoom_max = 4,
hover_css = "fill:#FF3333;stroke:black;cursor:pointer;",
selected_css = "fill:#FF3333;stroke:black;",
width_svg = (0.8*input$pltChange$width/input$pltChange$dpi),
height_svg = (0.5*input$pltChange$height/input$pltChange$dpi)
))
})
}
ui <- fluidPage(
tags$body(tags$div(id="ppitest", style="width:1in;visible:hidden;padding:0px")),
tags$script('$(document).on("shiny:connected", function(e) {
var w = window.innerWidth;
var h = window.innerHeight;
var d = document.getElementById("ppitest").offsetWidth;
var obj = {width: w, height: h, dpi: d};
Shiny.onInputChange("pltChange", obj);
});
$(window).resize(function(e) {
var w = $(this).width();
var h = $(this).height();
var d = document.getElementById("ppitest").offsetWidth;
var obj = {width: w, height: h, dpi: d};
Shiny.onInputChange("pltChange", obj);
});
'),
"GGPLOT2:",
plotOutput("ggplot"),
"GGIRAPH:",
ggiraphOutput("plot")
)
shinyApp(ui = ui, server = server) https://stackoverflow.com/questions/45191999
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