How to get an rmarkdown vignette for R package to escape CRAN warnings on Solaris and OSX
It's been a while and it seems you have not solved the problem yet.
I also have a R markdown vignette on one of my imputeTS package (vignette). It has quite a lot of images created with ggplot2, so I don't think the problem is about having images in general.
I have exactly the same annotations for the .Rmd file
MARKDOWN .Rmd file:
---title: "Gallery: Times Series Missing Data Visualizations"author: "Steffen Moritz"date: "`r Sys.Date()`"output: rmarkdown::html_vignettevignette: > %\VignetteIndexEntry{Gallery: Times Series Missing Data Visualizations} %\VignetteEngine{knitr::rmarkdown} %\VignetteEncoding{UTF-8}--- However, my DESCRIPTION has a slight difference to yours:
DESCRIPTION
Suggests: testthat, R.rsp, knitr, zoo, timeSeries, tis, xts, tibble, tsibble, rmarkdownLicense: GPL-3VignetteBuilder: R.rsp, knitr, rmarkdownAs you can see rmarkdown is also additionally added as VignetteBuilder. Would you midn trying this out. Some Github Issues also suggest this could be related to problems (https://github.com/r-lib/usethis/issues/1147)