# packages
library(spdep)
#> Loading required package: sp
#> Loading required package: spData
#> Loading required package: sf
#> Linking to GEOS 3.8.0, GDAL 3.0.4, PROJ 6.3.1
library(rgdal)
#> rgdal: version: 1.5-12, (SVN revision 1018)
#> Geospatial Data Abstraction Library extensions to R successfully loaded
#> Loaded GDAL runtime: GDAL 3.0.4, released 2020/01/28
#> Path to GDAL shared files: C:/Users/Utente/Documents/R/win-library/3.6/rgdal/gdal
#> GDAL binary built with GEOS: TRUE
#> Loaded PROJ runtime: Rel. 6.3.1, February 10th, 2020, [PJ_VERSION: 631]
#> Path to PROJ shared files: C:/Users/Utente/Documents/R/win-library/3.6/rgdal/proj
#> Linking to sp version:1.4-2
#> To mute warnings of possible GDAL/OSR exportToProj4() degradation,
#> use options("rgdal_show_exportToProj4_warnings"="none") before loading rgdal.
library(Matrix)
# data
nc.sids <- readOGR(system.file("shapes/sids.shp", package = "spData"))
#> OGR data source with driver: ESRI Shapefile
#> Source: "C:\Users\Utente\Documents\R\win-library\3.6\spData\shapes\sids.shp", layer: "sids"
#> with 100 features
#> It has 22 fields
adj <- poly2nb(nc.sids)
W <- as(nb2mat(adj, style = "B"), "Matrix")
Matrix::isSymmetric(W)
#> [1] FALSE
chol(W)
#> Error in asMethod(object): not a symmetric matrix; consider forceSymmetric() or symmpart()Created on 2020-07-29 by the reprex package (v0.3.0)
Session info
devtools::session_info()
#> - Session info ---------------------------------------------------------------
#> setting value
#> version R version 3.6.3 (2020-02-29)
#> os Windows 10 x64
#> system x86_64, mingw32
#> ui RTerm
#> language (EN)
#> collate Italian_Italy.1252
#> ctype Italian_Italy.1252
#> tz Europe/Berlin
#> date 2020-07-29
#>
#> - Packages -------------------------------------------------------------------
#> package * version date lib source
#> assertthat 0.2.1 2019-03-21 [1] CRAN (R 3.6.0)
#> backports 1.1.8 2020-06-17 [1] CRAN (R 3.6.3)
#> boot 1.3-25 2020-04-26 [1] CRAN (R 3.6.3)
#> callr 3.4.3 2020-03-28 [1] CRAN (R 3.6.3)
#> class 7.3-17 2020-04-26 [1] CRAN (R 3.6.3)
#> classInt 0.4-3 2020-04-07 [1] CRAN (R 3.6.3)
#> cli 2.0.2 2020-02-28 [1] CRAN (R 3.6.3)
#> coda 0.19-3 2019-07-05 [1] CRAN (R 3.6.1)
#> codetools 0.2-16 2018-12-24 [2] CRAN (R 3.6.3)
#> crayon 1.3.4 2017-09-16 [1] CRAN (R 3.6.0)
#> DBI 1.1.0 2019-12-15 [1] CRAN (R 3.6.3)
#> deldir 0.1-28 2020-07-15 [1] CRAN (R 3.6.3)
#> desc 1.2.0 2018-05-01 [1] CRAN (R 3.6.0)
#> devtools 2.3.1 2020-07-21 [1] CRAN (R 3.6.3)
#> digest 0.6.25 2020-02-23 [1] CRAN (R 3.6.3)
#> dplyr 1.0.0 2020-05-29 [1] CRAN (R 3.6.3)
#> e1071 1.7-3 2019-11-26 [1] CRAN (R 3.6.1)
#> ellipsis 0.3.1 2020-05-15 [1] CRAN (R 3.6.3)
#> evaluate 0.14 2019-05-28 [1] CRAN (R 3.6.0)
#> expm 0.999-5 2020-07-20 [1] CRAN (R 3.6.3)
#> fansi 0.4.1 2020-01-08 [1] CRAN (R 3.6.2)
#> fs 1.4.2 2020-06-30 [1] CRAN (R 3.6.3)
#> gdata 2.18.0 2017-06-06 [1] CRAN (R 3.6.0)
#> generics 0.0.2 2018-11-29 [1] CRAN (R 3.6.0)
#> glue 1.4.1 2020-05-13 [1] CRAN (R 3.6.3)
#> gmodels 2.18.1 2018-06-25 [1] CRAN (R 3.6.1)
#> gtools 3.8.2 2020-03-31 [1] CRAN (R 3.6.3)
#> highr 0.8 2019-03-20 [1] CRAN (R 3.6.0)
#> htmltools 0.5.0 2020-06-16 [1] CRAN (R 3.6.3)
#> KernSmooth 2.23-17 2020-04-26 [1] CRAN (R 3.6.3)
#> knitr 1.29 2020-06-23 [1] CRAN (R 3.6.3)
#> lattice 0.20-41 2020-04-02 [1] CRAN (R 3.6.3)
#> LearnBayes 2.15.1 2018-03-18 [1] CRAN (R 3.6.0)
#> lifecycle 0.2.0 2020-03-06 [1] CRAN (R 3.6.2)
#> magrittr 1.5 2014-11-22 [1] CRAN (R 3.6.0)
#> MASS 7.3-51.6 2020-04-26 [1] CRAN (R 3.6.3)
#> Matrix * 1.2-18 2019-11-27 [2] CRAN (R 3.6.3)
#> memoise 1.1.0 2017-04-21 [1] CRAN (R 3.6.0)
#> nlme 3.1-148 2020-05-24 [1] CRAN (R 3.6.3)
#> pillar 1.4.6 2020-07-10 [1] CRAN (R 3.6.3)
#> pkgbuild 1.1.0 2020-07-13 [1] CRAN (R 3.6.3)
#> pkgconfig 2.0.3 2019-09-22 [1] CRAN (R 3.6.1)
#> pkgload 1.1.0 2020-05-29 [1] CRAN (R 3.6.3)
#> prettyunits 1.1.1 2020-01-24 [1] CRAN (R 3.6.2)
#> processx 3.4.3 2020-07-05 [1] CRAN (R 3.6.3)
#> ps 1.3.3 2020-05-08 [1] CRAN (R 3.6.3)
#> purrr 0.3.4 2020-04-17 [1] CRAN (R 3.6.3)
#> R6 2.4.1 2019-11-12 [1] CRAN (R 3.6.1)
#> raster 3.3-13 2020-07-17 [1] CRAN (R 3.6.3)
#> Rcpp 1.0.5 2020-07-06 [1] CRAN (R 3.6.3)
#> remotes 2.2.0 2020-07-21 [1] CRAN (R 3.6.3)
#> rgdal * 1.5-12 2020-06-26 [1] CRAN (R 3.6.3)
#> rlang 0.4.7 2020-07-09 [1] CRAN (R 3.6.3)
#> rmarkdown 2.3 2020-06-18 [1] CRAN (R 3.6.3)
#> rprojroot 1.3-2 2018-01-03 [1] CRAN (R 3.6.0)
#> sessioninfo 1.1.1 2018-11-05 [1] CRAN (R 3.6.0)
#> sf * 0.9-5 2020-07-14 [1] CRAN (R 3.6.3)
#> sp * 1.4-2 2020-05-20 [1] CRAN (R 3.6.3)
#> spData * 0.3.8 2020-07-03 [1] CRAN (R 3.6.3)
#> spDataLarge 0.3.1 2019-06-30 [1] Github (Nowosad/spDataLarge@012fe53)
#> spdep * 1.1-5 2020-06-29 [1] CRAN (R 3.6.3)
#> stringi 1.4.6 2020-02-17 [1] CRAN (R 3.6.2)
#> stringr 1.4.0 2019-02-10 [1] CRAN (R 3.6.0)
#> testthat 2.3.2 2020-03-02 [1] CRAN (R 3.6.3)
#> tibble 3.0.3.9000 2020-07-12 [1] Github (tidyverse/tibble@a57ad4a)
#> tidyselect 1.1.0 2020-05-11 [1] CRAN (R 3.6.3)
#> units 0.6-7 2020-06-13 [1] CRAN (R 3.6.3)
#> usethis 1.6.1 2020-04-29 [1] CRAN (R 3.6.3)
#> vctrs 0.3.2 2020-07-15 [1] CRAN (R 3.6.3)
#> withr 2.2.0 2020-04-20 [1] CRAN (R 3.6.3)
#> xfun 0.16 2020-07-24 [1] CRAN (R 3.6.3)
#> yaml 2.2.1 2020-02-01 [1] CRAN (R 3.6.2)
#>
#> [1] C:/Users/Utente/Documents/R/win-library/3.6
#> [2] C:/Program Files/R/R-3.6.3/library