我在R（.Rmd扩展名）的markdown中用波兰语写一份报告。不幸的是，我无法在ą或ę输出中显示像html，pdf等字符。
我的会话信息：
> sessionInfo()
R version 3.2.1 (2015-06-18)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 8 x64 (build 9200)
locale:
[1] LC_COLLATE=Polish_Poland.1250 LC_CTYPE=Polish_Poland.1250 LC_MONETARY=Polish_Poland.1250 LC_NUMERIC=C LC_TIME=Polish_Poland.1250
attached base packages:
[1] tools stats graphics grDevices utils datasets methods base
other attached packages:
[1] markdown_0.7.7 httr_1.0.0 knitr_1.10.5
loaded via a namespace (and not attached):
[1] R6_2.1.0 magrittr_1.5 formatR_1.2 htmltools_0.2.6 rstudioapi_0.3.1 curl_0.9.1 yaml_2.1.13 stringi_0.5-5 rmarkdown_0.7
[10] jsonlite_0.9.16 stringr_1.0.0 digest_0.6.8 evaluate_0.7
一些可重复的例子
---
title: "Review"
author: "My name"
output:
pdf_document:
latex_engine: xelatex
geometry: margin=2cm
---
## Wstęp
Media społecznościowe ...
所有特殊抛光字符都显示为相应的英文字符，因此输出就像这样
Wstep
Mecia spolecznosciowe ...
任何帮助表示赞赏！