运行环境
## R version 4.2.3 (2023-03-15)
## Platform: x86_64-pc-linux-gnu (64-bit)
## Running under: Ubuntu 22.04.2 LTS
##
## Locale:
## LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
## LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
## LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
## LC_PAPER=en_US.UTF-8 LC_NAME=C
## LC_ADDRESS=C LC_TELEPHONE=C
## LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
##
## Package version:
## base64enc_0.1.3 bookdown_0.34 bslib_0.4.2 cachem_1.0.8
## cli_3.6.1 compiler_4.2.3 curl_5.0.0 digest_0.6.31
## ellipsis_0.3.2 evaluate_0.21 fastmap_1.1.1 fontawesome_0.5.1
## fs_1.6.2 glue_1.6.2 graphics_4.2.3 grDevices_4.2.3
## highr_0.10 htmltools_0.5.5 jquerylib_0.1.4 jsonlite_1.8.4
## knitr_1.42 lifecycle_1.0.3 magrittr_2.0.3 memoise_2.0.1
## methods_4.2.3 mime_0.12 R6_2.5.1 rappdirs_0.3.3
## rlang_1.1.1 rmarkdown_2.21 sass_0.4.6 stats_4.2.3
## stringi_1.7.12 stringr_1.5.0 sysfonts_0.8.8 tinytex_0.45
## tools_4.2.3 utils_4.2.3 vctrs_0.6.2 xfun_0.39
## yaml_2.3.7
create-an-empty-data-frame
pipe-r