9.9 运行环境

sessionInfo()
## R version 4.1.0 (2021-05-18)
## Platform: x86_64-pc-linux-gnu (64-bit)
## Running under: Ubuntu 20.04.2 LTS
## 
## Matrix products: default
## BLAS:   /usr/lib/x86_64-linux-gnu/blas/libblas.so.3.9.0
## LAPACK: /usr/lib/x86_64-linux-gnu/lapack/liblapack.so.3.9.0
## 
## 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=en_US.UTF-8   
##  [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     
## 
## other attached packages:
## [1] DBI_1.1.1      magrittr_2.0.1
## 
## loaded via a namespace (and not attached):
##  [1] Rcpp_1.0.6        knitr_1.33        bit_4.0.4         R6_2.5.0         
##  [5] rlang_0.4.11      fastmap_1.1.0     blob_1.2.1        stringr_1.4.0    
##  [9] highr_0.9         tools_4.1.0       nomnoml_0.2.3     xfun_0.23        
## [13] jquerylib_0.1.4   htmltools_0.5.1.1 yaml_2.2.1        bit64_4.0.5      
## [17] digest_0.6.27     lifecycle_1.0.0   bookdown_0.22     vctrs_0.3.8      
## [21] sass_0.4.0        htmlwidgets_1.5.3 cachem_1.0.5      memoise_2.0.0    
## [25] evaluate_0.14     RSQLite_2.2.7     rmarkdown_2.8     stringi_1.6.2    
## [29] compiler_4.1.0    bslib_0.2.5.1     jsonlite_1.7.2    pkgconfig_2.0.3