On 10/06/2021 4:42 a.m., David Waterman wrote:
Hi all,I tried subscribing to the list yesterday, but this does not appear to have been successful. Therefore I am hoping this message meets volunteer moderator approval. I have problems using snapshot3d from rgl while trying to render an R Markdown page. I want to do this to capture static snapshots of an interactive widget on the page. I had this working with an earlier version of R (sorry, forgot which), but this now hangs indefinitely at the snapshot3d call. Should I expect this to work? I can successfully create a snapshot from an interactive R session with either webshot=TRUE or FALSE, just not from within my R Markdown build. I have created a simple reproducer, which I attempt to build using: library(rmarkdown) rmarkdown::render("reproducer.Rmd") where the contents of reproducer.Rmd are: $ cat reproducer.Rmd --- title: "rgl test" output: html_document: toc: true toc_float: toc_collapsed: true --- ```{r, setup, echo=FALSE} library(rgl) library(knitr) knitr::knit_hooks$set(webgl = hook_webgl) ``` ### Insert rgl figure Test ```{r, webgl=TRUE, echo=FALSE} with(iris, plot3d(Sepal.Length, Sepal.Width, Petal.Length, type="s", col=as.numeric(Species))) snapshot3d("foo.png") rglwidget() rgl.close() ```
One suggestion I forgot: try snapshot3d("foo.png", webshot = FALSE). This should fall back to the internal snapshot code in rgl. You generally don't get as good quality of a result, but if you are not running on a headless system it will generally work.
Duncan Murdoch ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
