我正在Docker容器中运行Shiny应用程序。该应用程序从Google Analytics(分析)中提取/处理数据，然后将这些数据传递到.Rmd文件中，然后将该文件编织到投影仪演示文稿中，然后提供该文件以供下载。 docker镜像正在使用R v3.4.4.运行rmarkdown v1.10。该应用程序可以正常工作，除了最后一步，在此过程中，我使用render()将.Rmd编织为.pdf。pdflatex已安装并可以在我的容器中访问:
root@de4bd1ee457a:/# pdflatex
This is pdfTeX, Version 3.14159265-2.6-1.40.18 (TeX Live 2017) (preloaded format=pdflatex)
restricted \write18 enabled.
我的
sessionInfo()> sessionInfo()
R version 3.4.4 (2018-03-15)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Debian GNU/Linux 9 (stretch)
Matrix products: default
BLAS: /usr/lib/openblas-base/libblas.so.3
LAPACK: /usr/lib/libopenblasp-r0.2.19.so
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
[5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=C
[7] LC_PAPER=en_US.UTF-8 LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
loaded via a namespace (and not attached):
[1] compiler_3.4.4
Shiny 的服务器日志:
Listening on http://127.0.0.1:45211
2018-08-07 13:49:19> No scopes have been set, set them via
options(googleAuthR.scopes.selected) -
no authentication attempted.
Attaching package: ‘dplyr’
The following objects are masked from ‘package:stats’:
filter, lag
The following objects are masked from ‘package:base’:
intersect, setdiff, setequal, union
2018-08-07 13:49:20> Default Google Project for googleAnalyticsR is now set.
This is shared with all googleAnalyticsR users.
If making a lot of API calls, please:
1) create your own Google Project at https://console.developers.google.com
2) Activate the Google Analytics Reporting API
3) set options(googleAuthR.client_id) and options(googleAuthR.client_secret)
4) Reload the package.
2018-08-07 13:49:20> Set API cache
2018-08-07 13:49:20> No environment argument found, looked in GA_AUTH_FILE
Attaching package: ‘jsonlite’
The following object is masked from ‘package:shiny’:
validate
2018-08-07 13:49:36> Downloaded [5045] rows from a total of [5045].
processing file: GA_report.Rmd
`geom_smooth()` using method = 'loess' and formula 'y ~ x'
`geom_smooth()` using method = 'loess' and formula 'y ~ x'
`geom_smooth()` using method = 'loess' and formula 'y ~ x'
`geom_smooth()` using method = 'loess' and formula 'y ~ x'
output file: GA_report.knit.md
我已经验证成功创建了
GA_report.knit.md(以及.Rmd文件中的所有数字)。在R session 的容器中，我可以在render()文件上运行...knit.md并创建最终的投影仪演示.pdf，而不会出现问题。只是将*.knit.md转换为.pdf并提供下载的最后一步失败了。当我查看包含我的
dir文件的.Rmd时，没有.tex文件，只有GA_report.knit.md和GA_report.utf8.md。我的
.Rmd的标题---
output:
beamer_presentation:
theme: "SwCustom"
title: "`r paste0('Draft report: ', params$client)`"
date: "`r Sys.Date()`"
toc: FALSE
classoption: aspectratio=169
editor_options:
chunk_output_type: console
params:
data: NA
client: NA
---
render()语句render("report/GA_report.Rmd",
output_format = "all",
output_file = file,
params = params,
envir = new.env(parent = globalenv()),
clean = FALSE,
quiet = FALSE)
我的自定义投影仪主题可在容器中访问
root@de4bd1ee457a:/# kpsewhich beamerthemeSwCustom.sty
/opt/TinyTeX/texmf-dist/tex/latex/beamer/beamerthemeSwCustom.sty
这可能是怎么回事？在完成文件过程中，似乎所有迹象都应指向是，但是我对可能的问题感到困惑。
最佳答案
我相信这与Shiny Server中的最大超时错误有关。我的Docker容器正在运行Shiny Server，并且this issue on the Shiny Server github建议在Shiny Server中的downloadHandler()中存在硬编码的超时。由于我的.Rmd文件很大，因此转换为.pdf所需的时间比自动超时要长得多。因为downloadHandler()从未提供我期望的下载内容，所以我将取消该过程，并且最终.pdf从未创建。
重构我的应用程序以使其包括两个按钮，一个用于生成报告，一个用于下载报告。通过允许在downloadedHandler()之外进行.Rmd的编织，避免了downloadHandler()的硬编码超时。
关于r - render()无法在容器化的Shiny应用中将.Rmd转换为.pdf，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/51729323/