The HTML widgets that are supposed to work within xaringan presentations are not showing up / rendering on the slides for me. Even when I knit the provided template. As a reproducible example, when I knit:
---
title: "Presentation Ninja"
subtitle: "⚔<br/>with xaringan"
author: "Yihui Xie"
institute: "RStudio, PBC"
date: "2016/12/12 (updated: `r Sys.Date()`)"
output:
xaringan::moon_reader:
lib_dir: libs
nature:
highlightStyle: github
highlightLines: true
countIncrementalSlides: false
---
options(htmltools.dir.version = FALSE)
DT::datatable(
head(iris, 10),
fillContainer = FALSE, options = list(pageLength = 8)
)
All I get for slide 2 is:
I would like to include DT::datatable() tables in my presentations. They knit fine to other RMarkdown documents at the moment, like ioslides_presentation and html_document. Here is my session info
sessionInfo()
R version 4.0.3 (2020-10-10)
Platform: x86_64-apple-darwin17.0 (64-bit)
Running under: macOS Big Sur 10.16
Matrix products: default
LAPACK: /Library/Frameworks/R.framework/Versions/4.0/Resources/lib/libRlapack.dylib
locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] DT_0.17.1
loaded via a namespace (and not attached):
[1] Rcpp_1.0.6 rstudioapi_0.13 knitr_1.30.4 servr_0.21 magrittr_2.0.1
[6] R6_2.5.0 rlang_0.4.10 fansi_0.4.2 stringr_1.4.0 tools_4.0.3
[11] xfun_0.20 xaringan_0.19.1 sessioninfo_1.1.1 cli_2.2.0 withr_2.4.0
[16] htmltools_0.5.1 crosstalk_1.1.1 assertthat_0.2.1 yaml_2.2.1 digest_0.6.27
[21] crayon_1.3.4 later_1.1.0.1 htmlwidgets_1.5.3 promises_1.1.1 rsconnect_0.8.16
[26] glue_1.4.2 evaluate_0.14 mime_0.9 rmarkdown_2.6 stringi_1.5.3
[31] compiler_4.0.3 jsonlite_1.7.2 httpuv_1.5.5
And I just updated RStudio today: Version 1.4.1103 © 2009-2021 RStudio, PBC "Wax Begonia" (458706c3, 2021-01-06) for macOS
perhaps also useful:
> rmarkdown::pandoc_version()
[1] ‘2.11.2’
Any advice is appreciated!
A recent update to rmarkdown (in version 2.6) changed how HTML widgets are included in the output file to use pandoc's raw HTML blocks. Unfortunately, this feature isn't compatible with the JavaScript markdown library used by xaringan. You can disable this feature and resolve the issue with htmlwidgets in xaringan slides by setting
options(htmltools.preserve.raw = FALSE)
Here's the related NEWS entry from rmarkdown 2.6 :
Specify that htmltools::htmlPreserve() should use the pandoc raw attribute rather than preservation tokens when pandoc >= v2.0. Note that this option will have the intended effect only for versions of htmltools >= 0.5.0.9003.
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