我最近开始在Rmarkdown中使用Slidy演示模板，并且喜欢每个幻灯片如何允许您向下滚动以获取更多内容。
我使用此方法的一种方法是与学生共享地块（请参见下面的示例代码）。在单张幻灯片上，我可以显示该图以及用于创建该图的确切代码，可以向下滚动查看该代码。
---
title: Echo Code Chunks After Code Results
subtitle: Thanks For Your Help
author: Me
date: "today"
output: slidy_presentation
runtime: shiny
---
## Slide with Interactive Plot
```{r, echo=TRUE, warning=FALSE, message=FALSE}
shinyApp(options = list(width = "100%", height = "700px"),
ui = ( fluidPage(
inputPanel(
selectInput("n_breaks", label = h3("Number of bins:"),
choices = c(10, 20, 35, 50), selected = 20),
sliderInput("bw_adjust", label = h3("Bandwidth:"),
min = 0.2, max = 2, value = 1, step = 0.2)),
plotOutput("stuff", height = "650px")
)),
server = function(input,output,session) {
output$stuff = renderPlot({
hist(faithful$eruptions, probability = TRUE,
breaks = as.numeric(input$n_breaks),
xlab = "Duration (minutes)", main = "Geyser eruption duration",
col = "bisque", border = 1)
dens <- density(faithful$eruptions, adjust = input$bw_adjust, lwd = 2, col = "blue")
lines(dens, col = "blue")
})
})
```
我遇到的问题是，默认行为是在代码生成之前回显代码块，这与我想要的方式相反。
我显然可以通过插入两个代码块来解决此问题，其中第一个具有块选项echo=FALSE，第二个具有块选项，echo=TRUE, fig.show='hide'但这需要我确保两个代码块都匹配。如何在回显代码之前颠倒此顺序以显示绘图。
与往常一样，感谢您的帮助。
您应该可以使用以下内容来完成演示文稿的内容。
## Slide with Interactive Plot
```{r thecode, echo=FALSE, warning=FALSE, message=FALSE}
shinyApp(options = list(width = "100%", height = "700px"),
ui = (fluidPage(inputPanel(
selectInput("n_breaks", label = h3("Number of bins:"),
choices = c(10, 20, 35, 50), selected = 20),
sliderInput("bw_adjust", label = h3("Bandwidth:"),
min = 0.2, max = 2, value = 1, step = 0.2)),
plotOutput("stuff", height = "650px"))),
server = function(input,output,session) {
output$stuff = renderPlot({
hist(faithful$eruptions, probability = TRUE,
breaks = as.numeric(input$n_breaks), xlab = "Duration (minutes)",
main = "Geyser eruption duration", col = "bisque", border = 1)
dens <- density(faithful$eruptions, adjust = input$bw_adjust,
lwd = 2, col = "blue")
lines(dens, col = "blue")})
})
```
```{r thecode, eval=FALSE}
```
那是：
thecode）。echo = FALSE以使该代码不会打印出来，但会进行评估。echo = TRUE，但保持该块完全为空（在篱笆之间也没有空行）。本文收集自互联网，转载请注明来源。
如有侵权，请联系[email protected] 删除。
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