For dygraph 循环在 R 中不起作用 [英] For loop over dygraph does not work in R
问题描述
dygraph
上有一些奇怪的行为.
There is some strange behavior on dygraph
.
当对 dygraph
使用 for
循环时,我没有得到任何结果.
When using a for
loop for dygraph
i get no result.
library(dygraphs)
lungDeaths <- cbind(mdeaths, fdeaths)
for(i in 1:2){
dygraph(lungDeaths[, i])
}
另一方面,当我使用 lapply
时,我确实得到了预期的结果
On the other hand when i use lapply
i do get the expected result
lapply(1:2, function(i) dygraph(lungDeaths[, i]))
我实际上想在我自己的数据集上使用 R Markdown
中的 for
循环并迭代不同的列,但即使我使用 lapply
解决方法",它不会绘制 dygraphs
I actually want to use the for
loop in R Markdown
on my own data set and iterate over the different columns, but even when i use the lapply
"workaround", it does not plot the dygraphs
R Markdown 代码
---
title: "Untitled"
author: "dimitris_ps"
date: "28 May 2015"
output: html_document
---
```{r}
library(dygraphs)
lungDeaths <- cbind(mdeaths, fdeaths)
lapply(1:2, function(i) dygraph(lungDeaths[, i]))
```
而当我逐列运行它时它会起作用
Whereas when i run it column by column it works
---
title: "Untitled"
author: "dimitris_ps"
date: "28 May 2015"
output: html_document
---
```{r echo=FALSE}
library(dygraphs)
lungDeaths <- cbind(mdeaths, fdeaths)
```
```{r}
dygraph(lungDeaths[, 1])
dygraph(lungDeaths[, 2])
```
任何帮助将不胜感激.
会话信息
R version 3.2.0 (2015-04-16)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 7 x64 (build 7601) Service Pack 1
locale:
[1] LC_COLLATE=English_United Kingdom.1252 LC_CTYPE=English_United Kingdom.1252
[3] LC_MONETARY=English_United Kingdom.1252 LC_NUMERIC=C
[5] LC_TIME=English_United Kingdom.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] dygraphs_0.4.3 devtools_1.7.0
loaded via a namespace (and not attached):
[1] htmltools_0.2.6 tools_3.2.0 yaml_2.1.13 rmarkdown_0.6.1 digest_0.6.8
推荐答案
只需将 lapply()
的列表输出包装在 htmltools::tagList()
中,例如
Just wrap the list output from lapply()
in htmltools::tagList()
, e.g.
```{r}
library(dygraphs)
lungDeaths <- cbind(mdeaths, fdeaths)
res <- lapply(1:2, function(i) dygraph(lungDeaths[, i]))
htmltools::tagList(res)
```
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