在尝试找到关于保存由d3heatmap生成的热图的
this SO question的解决方案的过程中,我在
development version of knitr
(HT:
hrbrmstr)中使用webshot遇到了无关的问题.
library(devtools)
devtools::install_github('yihui/knitr', build_vignettes = TRUE)
library(knitr)
安装并加载knitr的开发版本后,我尝试运行以下.Rmd文件:
---
title: "Untitled"
output: pdf_document
---
```{r}
library(d3heatmap)
d3heatmap(mtcars, scale = "column", colors = "Spectral")
```
我被提示安装phantomjs:
webshot::install_phantomjs()
phantomjs.exe has been installed to /Users/USERNAME/Library/Application Support/PhantomJS
我尝试再次运行.Rmd文件,但是我收到了这个错误:
sh: ~/Library/Application Support/PhantomJS/phantomjs: No such file or directory
Quitting from lines 7-9 (test.Rmd)
Error in (function (url = NULL, file = "webshot.png", vwidth = 992, vheight = 744, :
webshot.js returned failure value: 127
Calls: <Anonymous> ... html_screenshot -> in_dir -> do.call -> <Anonymous>
Execution halted
我相信错误告诉我R找不到phantomjs.exe,但我发现它位于指定的路径中.我知道这会引起愚蠢的用户错误.
最佳答案 这是一个
known bug,并已在当前的
development version of webshot中修复.