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[英]why does kable not print when used within a function in rmarkdown
[英]Why does datatable not print when looping in rmarkdown?
我正在創建一個動態的rmarkdown文檔。 最終結果應為數據中的每個“分類”創建一個選項卡。 每個選項卡都應具有DT包中的數據表,並打印數據。 以下是我一直使用的代碼:
---
output: html_document
---
# Setup{.tabset}
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = FALSE)
library(knitr)
library(DT)
```
```{r data.setup}
set.seed = 1242
rows = 64
data.1 = runif(rows, 25, 75)
data.2 = runif(rows, .01, 1)
data.3 = runif(rows, 1, 10)
classification = c("A", "B", "C", "D")
df = data.frame(cbind(data.1 = data.1, data.2 = data.2, data.3 = data.3, classification = classification))
df$data.1 = as.numeric(df$data.1)
df$data.2 = as.numeric(df$data.2)
df$data.3 = as.numeric(df$data.3)
```
```{r results= 'asis'}
for(j in levels(df$classification)){
df.j = df[df$classification == j, ]
cat(paste("\n\n## Classification: ", j, "##\n"))
w = datatable(df.j)
#datatable(df.j)
print(w)
}
```
注意我已經注釋掉了對數據表函數的直接調用,那些沒有打印到rmarkdown。 寫入的調用結果生成帶有正確選項卡的html文檔,但其中沒有數據表。 此外,數據表實際上在我的RStudio會話中顯示正確的子集。 作為測試,我嘗試使用knitr中的kable函數實現目標,並且表格被打印在適當的選項卡中,遺憾的是,kable沒有所需的全部功能。
這不是一個完整的答案,因為其中一些仍然令我感到困惑,但至少這足以讓你在我嘗試了解更多時繼續前進。
---
output: html_document
---
# Setup{.tabset}
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = FALSE)
library(knitr)
library(DT)
```
```{r data.setup}
set.seed <- 1242
rows <- 64
data.1 <- runif(rows, 25, 75)
data.2 <- runif(rows, .01, 1)
data.3 <- runif(rows, 1, 10)
classification <- c("A", "B", "C", "D")
df <- data.frame(cbind(data.1 = data.1, data.2 = data.2, data.3 = data.3, classification = classification))
df$data.1 <- as.numeric(df$data.1)
df$data.2 <- as.numeric(df$data.2)
df$data.3 <- as.numeric(df$data.3)
```
```{r include = FALSE}
# Why, oh why do I need this chunk?
datatable(df)
```
```{r results = 'asis'}
for(j in unique(df$classification)){ # You were using level() here, so your for-loop never got off the ground
df.j <- df[df$classification == j, ]
cat(paste("\n\n## Classification: ", j, "##\n"))
print( htmltools::tagList(datatable(df.j)) )
}
這需要第三個塊才能工作,我還不確定原因。
通過谷歌搜索相同的問題到達這里。 這對我有用 : https : //gist.github.com/ReportMort/9ccb544a337fd1778179 。
基本上,生成一個渲染的元組列表並手動調用knit
。
這是一個基於您的示例的工作Rmd,使用上面鏈接中的技術:
---
output: html_document
---
# Setup{.tabset}
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = FALSE)
library(knitr)
library(DT)
```
```{r data.setup}
set.seed <- 1242
rows <- 64
data.1 <- runif(rows, 25, 75)
data.2 <- runif(rows, .01, 1)
data.3 <- runif(rows, 1, 10)
classification <- c("A", "B", "C", "D")
df <- data.frame(cbind(data.1 = data.1, data.2 = data.2, data.3 = data.3, classification = classification))
df$data.1 <- as.numeric(df$data.1)
df$data.2 <- as.numeric(df$data.2)
df$data.3 <- as.numeric(df$data.3)
```
```{r include = FALSE}
# prepare a list of 4 sub-dataframes, each corresponding to one classification
df_list <- split(df, df$classification)
```
```{r create-markdown-chunks-dynamically, include=FALSE}
out = NULL
for (c in names(df_list)) {
knit_expanded <- paste0("\n\n## Classification: ", c, "##\n\n```{r results='asis', echo=FALSE}\n\ndatatable(df_list[['", c, "']])\n\n```")
out = c(out, knit_expanded)
}
```
<!--- knit those table chunk statements -->
`r paste(knit(text = out), collapse = '\n')`
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