R package - HultenRangeMaps
type: Dataset
description: This dataset contains an R package (R Core Team 2025) with the methods employed to digitise the historical range maps in the ‘Atlas of the distribution of vascular plants in northwestern Europe’ (Hultén 1971). Methods include georeferencing the scanned maps, extract range data, clean data and convert data from raster to spatial polygon data. A detailed description of how the original atlas was compiled as well as the method used to georeference and digitize the distribution maps can be found in Arnell et al. (2026a). The resulting dataset can be found at https://doi.org/10.58141/y1x5-cx68 (Arnell et al. 2026b). A package tutorial with examples can be found at GitHub https://github.com/ArnellM/HultenRangeMaps/. The package contains two functions to extract and clean distribution data from the scanned maps, one function to modify file names and one function to match the distribution data to polygon grids commonly used when analysing historical atlas data. Installation This package can be installed using devtools (Wickham et al. 2025). To insure reproducibility, we have created a ‘mini’ repository with all the packages that the functions in HultenRangeMaps require. The repository is included in the documentation files (HultenRangeMaps_miniCRAN_June2025.zip) and at GitHub https://github.com/ArnellM/HultenRangeMaps_miniCRAN_June2025. First, download the repository to your computer. Then, decompress the folder and install the packages from your local repository using the code below. # list of packages that the functions in HultenRangeMaps require pkgs <- c("dplyr", "gtools", "raster", "sf", "terra", "tidyr") # path to where you have downloaded the local miniCran repository pth <- "/HultenRangeMaps_miniCRAN_June2025" # install packages from your local miniCRAN repository install.packages(pkgs, repos = paste0("file:///", pth), type = "source") # install HultenRange maps install.packages(c("devtools", "rtools")) library(devtools) install_github("ArnellM/HultenRangeMaps") lib…
conditions of access: http://publications.europa.eu/resource/authority/access-right/PUBLIC
conditions of access: info:eu-repo/semantics/openAccess
creative work status: completed
  type: DefinedTerm
  in defined term set: http://publications.europa.eu/resource/authority/dataset-status
  term code: COMPLETED
creator: Matilda Arnell
date modified: 2026-03-31
date published: 2026-03-31
language: English
is part of: https://doi.org/10.58141/shst-z797
keywords: Natural Sciences
  type: DefinedTerm
  term code: 1
keywords: digitising
keywords: habitat
keywords: species diversity
keywords: vascular plant species coverage
keywords: historical maps
keywords: vascular plants
keywords: tracheophyta
keywords: Range maps
license: https://creativecommons.org/licenses/by/4.0/
publisher: Stockholm University
distribution: data/HultenRangeMaps.zip
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  conditions of access: info:eu-repo/semantics/openAccess
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distribution: documentation/HultenRangeMaps_miniCRAN_June2025.zip
  type: DataDownload
  additional type: documentation
  conditions of access: http://publications.europa.eu/resource/authority/access-right/PUBLIC
  conditions of access: info:eu-repo/semantics/openAccess
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distribution: documentation/README.txt
  type: DataDownload
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  content size: 4902
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version: 1

PropertyValue
property ID: DOI
value: 10.58141/kvrm-hq58

Matilda Arnell
type: Person
affiliation: Stockholm University
family name: Arnell
given name: Matilda

Stockholm University
type: Organization
department: Department of Ecology, Environment and Plant Sciences

English
type: Language
alternate name: eng

digitising
type: DefinedTerm
description: The process of converting data to a form used in computers, transmitted or stored with digital technology and expressed as a string of 0's and 1's.
term code: 2196

habitat
type: DefinedTerm
description: 1) The locality in which a plant or animal naturally grows or lives. It can be either the geographical area over which it extends, or the particular station in which a specimen is found.\n2) A physical portion of the environment that is inhabited by an organism or population of organisms. A habitat is characterized by a relative uniformity of the physical environment and fairly close interaction of all the biological species involved. In terms of region, a habitat may comprise a desert, a tropical forest, a prairie field, the Arctic Tundra or the Arctic Ocean.
term code: 3808

species diversity
type: DefinedTerm
description: [Henderson's] the number and abund­ance of different species within a given area, which is one measure of biological diversity
term code: 21679

vascular plant species coverage
type: DefinedTerm
term code: 30048

historical maps
type: DefinedTerm
term code: p6299

vascular plants
type: DefinedTerm
term code: p15807

tracheophyta
type: DefinedTerm
term code: TP