r - “错误:发生错误。请检查您的日志或联系应用作者进行澄清。”
问题描述
我正在尝试设置我的第一个 Shiny 应用程序,但遇到了以下错误消息:
“错误:发生错误。请检查您的日志或联系应用作者进行澄清。”
我看到“reactive:plotObj”,我认为这可能是问题,但我没有实际的(标记的)反应项。如果可以澄清任何问题,我可以包括我的 ui.R 和 server.R。我浏览了代码,寻找明显的错误,它们对我来说并不明显。
我已经复制了我的日志,内容如下:
2019-06-21T20:31:49.080604+00:00 shinyapps[991225]: Server version: 1.7.6-6
2019-06-21T20:31:49.080607+00:00 shinyapps[991225]: LANG: en_US.UTF-8
2019-06-21T20:31:49.080652+00:00 shinyapps[991225]: R version: 3.5.2
2019-06-21T20:31:49.080654+00:00 shinyapps[991225]: shiny version: 1.3.2
2019-06-21T20:31:49.080655+00:00 shinyapps[991225]: httpuv version: 1.5.1
2019-06-21T20:31:49.080656+00:00 shinyapps[991225]: rmarkdown version:
(none)
2019-06-21T20:31:49.080676+00:00 shinyapps[991225]: jsonlite version: 1.6
2019-06-21T20:31:49.080656+00:00 shinyapps[991225]: knitr version: (none)
2019-06-21T20:31:49.080687+00:00 shinyapps[991225]: RJSONIO version: (none)
2019-06-21T20:31:49.080687+00:00 shinyapps[991225]: htmltools version:
0.3.6
2019-06-21T20:31:49.080903+00:00 shinyapps[991225]: Using pandoc
at /opt/connect/ext/pandoc2
2019-06-21T20:31:49.305354+00:00 shinyapps[991225]: Using jsonlite for
JSON processing
2019-06-21T20:31:49.312109+00:00 shinyapps[991225]:
2019-06-21T20:31:49.312113+00:00 shinyapps[991225]: Starting R with process
ID: '24'
2019-06-21T20:31:49.393993+00:00 shinyapps[991225]:
2019-06-21T20:31:49.393995+00:00 shinyapps[991225]: Listening on
http://127.0.0.1:33615
2019-06-21T20:31:51.249231+00:00 shinyapps[991225]: Warning: Error in $:
object of type 'closure' is not subsettable
2019-06-21T20:31:51.277783+00:00 shinyapps[991225]: 179: renderPlot
[/srv/connect/apps/Tim_Mullen_Assign_3/app.R#38]
2019-06-21T20:31:51.277786+00:00 shinyapps[991225]: 177: func
2019-06-21T20:31:51.277786+00:00 shinyapps[991225]: 137: drawPlot
2019-06-21T20:31:51.277790+00:00 shinyapps[991225]: 123:
<reactive:plotObj>
2019-06-21T20:31:51.277790+00:00 shinyapps[991225]: 107: drawReactive
2019-06-21T20:31:51.277791+00:00 shinyapps[991225]: 94: origRenderFunc
2019-06-21T20:31:51.277791+00:00 shinyapps[991225]: 93: output$map
2019-06-21T20:31:51.277792+00:00 shinyapps[991225]: 13: runApp
2019-06-21T20:31:51.277792+00:00 shinyapps[991225]: 12: fn
2019-06-21T20:31:51.277792+00:00 shinyapps[991225]: 7: connect$retry
2019-06-21T20:31:51.277793+00:00 shinyapps[991225]: 6: eval
2019-06-21T20:31:51.277794+00:00 shinyapps[991225]: 5: eval
2019-06-21T20:34:21.993347+00:00 shinyapps[991225]: Server version: 1.7.6-6
2019-06-21T20:34:21.993349+00:00 shinyapps[991225]: LANG: en_US.UTF-8
2019-06-21T20:34:21.993405+00:00 shinyapps[991225]: knitr version: (none)
2019-06-21T20:34:21.993385+00:00 shinyapps[991225]: R version: 3.5.2
2019-06-21T20:34:21.993387+00:00 shinyapps[991225]: shiny version: 1.3.2
2019-06-21T20:34:21.993388+00:00 shinyapps[991225]: httpuv version: 1.5.1
2019-06-21T20:34:21.993388+00:00 shinyapps[991225]: rmarkdown version:
(none)
2019-06-21T20:34:22.240898+00:00 shinyapps[991225]: Starting R with process
ID:'23'
2019-06-21T20:34:21.993409+00:00 shinyapps[991225]: jsonlite version: 1.6
2019-06-21T20:34:22.234937+00:00 shinyapps[991225]: Using jsonlite for
JSON processing
2019-06-21T20:34:21.993442+00:00 shinyapps[991225]: RJSONIO version: (none)
2019-06-21T20:34:21.993453+00:00 shinyapps[991225]: htmltools version:
0.3.6
2019-06-21T20:34:21.993631+00:00 shinyapps[991225]: Using pandoc at
/opt/connect/ext/pandoc2
2019-06-21T20:34:22.240897+00:00 shinyapps[991225]:
2019-06-21T20:34:22.311768+00:00 shinyapps[991225]:
2019-06-21T20:34:22.311770+00:00 shinyapps[991225]: Listening on
http://127.0.0.1:41309
titlePanel、selectInput、sliderInput 和 mainPanel 似乎工作正常。percent_map 中的地图在“发布”时似乎并没有一直加载。我希望得到地图来填充。
这是我的代码。我感谢大家的帮助!
library(shiny)
library(maps)
library(mapproj)
source("WWW/helpers.R")
ui <- fluidPage(
br(),
tags$em("For updated crime data please visit: ",
tags$a(href = "https://crime-data-explorer.fr.cloud.gov", "Crime Data Explorer")),
titlePanel("Assaults in America, 1973"),
sidebarLayout(
sidebarPanel(
helpText("Create crime maps with the information from USAssaults Dataframe"),
selectInput("var",
label = "Choose a Variable to Display",
choices = c("Assault", "Murder", "Rape"),
selected = "Murder"),
br(),
sliderInput("range",
label = "Rate of Occurances:",
min = 0, max = 100, value = c(0,100)),
br(),
sliderInput("alpha",
label = "Choose an Alpha to Adjust Transparency",
min = 0, max = 1, value = c(0,1))
),
mainPanel(plotOutput("map"))
)
)
server <-function(input, output) {
output$map <- renderPlot({
data <- switch (input$var,
"Assault" = df$Assault,
"Murder" = df$Murder,
"Rape" = df$Rape)
color <- switch (input$var,
"Assault" = "darkgreen",
"Murder" = "black",
"Rape" = "red")
legend <- switch (input$var,
"Number of Assualts" = "% Assualts",
"Number of Murders" = "% Murders",
"Number of Rapes" = "% Rapes")
alpha <- switch(input$var,
"Assault" = df$Assault,
"Murder" = df$Murder,
"Rape" = df$Rape)
percent_map (data, color, legend, input$range[1], input$range[2])
})
}
shinyApp(ui = ui, server = server)
解决方案
Error in $: object of type 'closure' is not subsettable
意味着你尝试应用$
到一个函数。由于我没有看到您df
在代码中定义数据框的位置,因此我怀疑该数据框不存在,并且 R“认为”df
是stats
包的功能(Fisher 分布的密度)。
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