documentation: maptools, plot bug

[carbonmetrics]

the documentation refers to maptools but this library has been removed from CRAN. so, this doesn't work anymore:

library(maptools)
data(wrld_simpl)

apart from this, the line plot(ds, main='Geographic Distance') produces error:

Error in graphics::par(plt = bigplot) : 
  invalid value specified for graphical parameter "plt"

environment:

> sessionInfo()
R version 4.4.3 (2025-02-28)
Platform: x86_64-pc-linux-gnu
Running under: Ubuntu 22.04.5 LTS

Matrix products: default
BLAS:   /usr/lib/x86_64-linux-gnu/openblas-pthread/libblas.so.3 
LAPACK: /usr/lib/x86_64-linux-gnu/openblas-pthread/libopenblasp-r0.3.20.so;  LAPACK version 3.10.0

locale:
 [1] 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      
 [8] LC_NAME=C                  LC_ADDRESS=C               LC_TELEPHONE=C             LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

time zone: Africa/Nairobi
tzcode source: system (glibc)

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] maps_3.4.3    dismo_1.3-16  raster_3.6-30 sp_2.2-0     

loaded via a namespace (and not attached):
 [1] codetools_0.2-19   lattice_0.22-5     e1071_1.7-16       magrittr_2.0.3     KernSmooth_2.23-26 classInt_0.4-11    sf_1.0-19          terra_1.8-54       grid_4.4.3         DBI_1.2.3         
[11] proxy_0.4-27       class_7.3-23       compiler_4.4.3     tools_4.4.3        Rcpp_1.0.14        units_0.8-7