图不显示

编程入门行业动态更新时间:2024-10-19 08:56:42

本文介绍了图不显示的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！问题描述

我正在使用闪亮的图形，所以无法显示图形.它是以前出现的，我不知道发生了什么变化.

I'm using shiny and I can't get a plotly graph to appear. It was appearing before, I don't know what changed.

MRE:

global.r(或将其放入server.r)

global.r (or put this into server.r)

library(shinydashboard) library(plotly)

server.r

shinyServer(function(input, output, session) { output$plotlyGraph <- renderPlotly({ input$regraph print("graphing...") return(plot_ly(list(blank = 0))) }) })

ui.r

dashboardPage( dashboardHeader(title = "The Title"), dashboardSidebar( actionButton("regraph", "graph again") ), dashboardBody( box(plotlyOutput("plotlyGraph")) ) )

R版本3.2.3

闪亮版本13.0

shinydashbaord 0.5.1

密谋2.0.16

空环境

我注意到，当我运行上面的代码时，出现错误 Error in gregexpr(calltext, singleline, fixed = TRUE) : regular expression is invalid UTF-8.

I noticed that when I run the above code, I get an error Error in gregexpr(calltext, singleline, fixed = TRUE) : regular expression is invalid UTF-8.

对debug(gregexpr)进行进一步调查后，我看到了

Upon further investigation with debug(gregexpr), I see this

Called from: inherits(x, "ggplot") debugging in: gregexpr(calltext, singleline, fixed = TRUE) debug: { if (!is.character(text)) text <- as.character(text) .Internal(gregexpr(as.character(pattern), text, ignore.case, perl, fixed, useBytes)) } Browse[2]> text [1] "function (x) inherits(x, \"ggplot\")"

不确定该怎么做.真的有一些幕后代码会修改一个字符串，该字符串随后会被评估为函数吗?

not sure what to make of that. Is there really some under-the-hood code that's supposed to be modifying a string that is later evaluated to a function?

我找到了另一个我的程序，该程序的绘图效果很好.从未调用gregrexpr().查看生成的HTML，有问题的HTML具有这种样式

I found another program I have where the plotly graph renders fine. gregrexpr() is never called. Looking at the generated HTML, the problematic one has this under style

width: 100%; height: 400px; visibility: hidden;

可见的有

width: 100%; height: 400px; visibility: inherit;

所以我想这是相关的(尽管因果关系未知...)

so I imagine this is related (though causation direction is unknown...)

推荐答案

renderPlotly({ return(plot_ly(x)) })

坏了.

renderPlotly(plot_ly(x))

有效.

要在绘制绘图之前做更多工作，请做类似的事情

To do more work before rendering the plotly, do something like