[英]Rmarkdown and Shiny input
I'm attempting my first Markdown doc and everything has been going smoothly until I get the error 我正在尝试我的第一个Markdown文档,并且一切顺利,直到出现错误为止
"Error in eval(expr, envir, enclos) : object 'input' not found"
with this chunk 这个块
{r, echo=FALSE}
inputPanel(
radioButtons("category",label= "Select Category",choices=c("diffPts","diffGF","diffGA","diffGD","diffpos"),inline = TRUE)
)
renderPlot({
ggplot(clubSeason, aes(x=team, y=input$category)) + geom_boxplot()
})
if I hardcode eg y="diffPts"
the chart displays. 如果我对
y="diffPts"
进行硬编码, y="diffPts"
显示图表。 Putting a print()
around the ggplot does not help 在ggplot周围放一个
print()
并没有帮助
TIA TIA
Following runs fine for me. 以下对我来说很好。 The value of ìnput$category` is printied as expected
按预期方式打印ìnput$ category`的值
---
title: "Untitled"
runtime: shiny
output: html_document
---
```{r, echo=FALSE}
library(ggplot2)
inputPanel(
radioButtons("category",label= "Select Category",choices=c("diffPts","diffGF","diffGA","diffGD","diffpos"),inline = TRUE)
)
renderPlot({
print(input$category)
ggplot(faithful, aes(x=eruptions, y=waiting)) + geom_boxplot()
})
```
UPDATE: 更新:
The issue appears to be with the aes
function being passed a string. 问题似乎是通过字符串传递了
aes
函数。 You can use aes_string
instead: 您可以改用
aes_string
:
renderPlot({
ggplot(clubSeason, aes_string(x='team', y=input$category)) + geom_boxplot()
})
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.