Please never attach screenshots, nobody can copy/paste the code shown in them. Thus:
library(spdep) library(spDataLarge) data(bristol_zones) bqueen <- poly2nb(bristol_zones, row.names=bristol_zones$name) However, updating to also suppport sf removed the facility of setting through the row.names= argument: attr(bqueen, "region.id")[bqueen[[1]]] # [1] "2" "39" "44" "50" "86" "94" https://github.com/r-spatial/spdep/blob/b815397c2ce0d58b3b4ca0c36bba7b5c3abbbcc2/R/poly2nb.R#L16-L20 poly2nb(as(bristol_zones, "Spatial"), row.names = bristol_zones$name) attr(bqueen, "region.id")[bqueen[[1]]] # [1] "Bath and North East Somerset 003" "Bristol 038" # [3] "Bristol 043" "Bristol 049" # [5] "South Gloucestershire 024" "South Gloucestershire 032" I've raised this issue https://github.com/r-spatial/spdep/issues/143 so this should work again at the next release. Roger -- Roger Bivand Emeritus Professor Norwegian School of Economics Postboks 3490 Ytre Sandviken, 5045 Bergen, Norway roger.biv...@nhh.no ________________________________________ From: R-sig-Geo <r-sig-geo-boun...@r-project.org> on behalf of Xiang Ye via R-sig-Geo <r-sig-geo@r-project.org> Sent: 18 January 2024 13:30 To: R Special Interest Group on using Geographical data and Mapping Subject: [R-sig-Geo] How to attach customized row.names to poly2nb() Dear community, It should be a very simple question with a straightforward answer - so please forgive my foolishness. By default, poly2nb() provides the neighbor list of a region in terms of numbers, for example: library(spdep) library(spDataLarge) poly2nb(bristol_zones) -> bqueen bqueen[1] The output is [cid:157ba602-300e-4f6b-8875-ea050def287c] which is expected. But often the case this is not convenient. So I want to provide a vector of names to label each region, and expect when I type bqueen[1], it can return something like a list of place names. According to the help of poly2nb(), this is implemented by row.names(). However, it does not work: [cid:be6a526c-5629-4c17-af44-972fb84f4a04] It looks like the output neglects the argument of row.names. How should I solve this issue? Thanks in advance! 叶翔 YE, Xiang THINKING SPATIALLY<http://www.linkedin.com/in/spatialyexiang>. Ph.D. in Spatial Statistics _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo
