本文主要是介绍R语言【taxa】——df_ref()：有效的 分类信息数据库，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
Package taxa version 0.4.2
Description
定义可以被 taxon_db 对象使用或使用 taxon_db 对象的有效分类数据库，例如 taxon_id 和 taxon。
使用 db_ref$get 查看数据库的详细信息。
用户可以使用 db_ref$set 创建自定义的数据库，并添加到数据库列表中。
每个数据库都必须包含下列信息：
- 数据库对应的网站的URL
- 一段简短的描述
- 定义有效的类群ID的正则表达式
- 数据库中有效的分类等级
Usage
db_refFormat
一个长度为3的列表对象。
Attribution
此代码基于knitr包中的代码处理选项。
Examples
查看所有的数据库定义：
db_ref$get()<taxon_db_def[8]>_____________________ ncbi ______________________url: http://www.ncbi.nlm.nih.gov/taxonomydesc: NCBI Taxonomy Database id_regex: [0-9]+ rank_levels: _____________________________ gbif _____________________________url: http://www.gbif.org/developer/species desc: GBIF Taxonomic Backbone id_regex: [0-9]+ rank_levels: kingdom < phylum < order < family < genus < species_____________________________________ bold _____________________________________url: http://www.boldsystems.org desc: Barcode of Life id_regex: [0-9]+ rank_levels: phylum < class < order < family < subfamily < genus < species < su…___________________ col ___________________url: http://www.catalogueoflife.orgdesc: Catalogue of Life id_regex: [a-z0-9]{32} rank_levels: ______________ eol ______________url: http://eol.org desc: Encyclopedia of Lifeid_regex: [0-9]+ rank_levels: ____________________ nbn ____________________url: https://nbn.org.uk desc: UK National Biodiversity Networkid_regex: [A-Z]{5}[0-9]{10} rank_levels: ________________ tps ________________url: http://www.tropicos.org/desc: Tropicos id_regex: [0-9]+ rank_levels: _______________________ itis _______________________url: http://www.itis.gov desc: Integrated Taxonomic Information Systemid_regex: [0-9]+ rank_levels: 自定义数据库：
db_ref$set(name = "my_new_database",url = "http://www.my_tax_database.com",desc = "I just made this up",id_regex = ".*"
)db_ref$get()<taxon_db_def[9]>_____________________ ncbi ______________________url: http://www.ncbi.nlm.nih.gov/taxonomydesc: NCBI Taxonomy Database id_regex: [0-9]+ rank_levels: _____________________________ gbif _____________________________url: http://www.gbif.org/developer/species desc: GBIF Taxonomic Backbone id_regex: [0-9]+ rank_levels: kingdom < phylum < order < family < genus < species________________________________________ bold _________________________________________url: http://www.boldsystems.org desc: Barcode of Life id_regex: [0-9]+ rank_levels: phylum < class < order < family < subfamily < genus < species < subspecies___________________ col ___________________ ______________ eol ______________url: http://www.catalogueoflife.org url: http://eol.org desc: Catalogue of Life desc: Encyclopedia of Lifeid_regex: [a-z0-9]{32} id_regex: [0-9]+ rank_levels: rank_levels: ____________________ nbn ____________________ ________________ tps ________________url: https://nbn.org.uk url: http://www.tropicos.org/desc: UK National Biodiversity Network desc: Tropicos id_regex: [A-Z]{5}[0-9]{10} id_regex: [0-9]+ rank_levels: rank_levels: _______________________ itis _______________________ _____________ my_new_database _____________url: http://www.itis.gov url: http://www.my_tax_database.comdesc: Integrated Taxonomic Information System desc: I just made this up id_regex: [0-9]+ id_regex: .* rank_levels: rank_levels: 恢复默认设置：
db_ref$reset()db_ref$get()<taxon_db_def[8]>_____________________ ncbi ______________________url: http://www.ncbi.nlm.nih.gov/taxonomydesc: NCBI Taxonomy Database id_regex: [0-9]+ rank_levels: _____________________________ gbif _____________________________url: http://www.gbif.org/developer/species desc: GBIF Taxonomic Backbone id_regex: [0-9]+ rank_levels: kingdom < phylum < order < family < genus < species________________________________________ bold _________________________________________url: http://www.boldsystems.org desc: Barcode of Life id_regex: [0-9]+ rank_levels: phylum < class < order < family < subfamily < genus < species < subspecies___________________ col ___________________ ______________ eol ______________url: http://www.catalogueoflife.org url: http://eol.org desc: Catalogue of Life desc: Encyclopedia of Lifeid_regex: [a-z0-9]{32} id_regex: [0-9]+ rank_levels: rank_levels: ____________________ nbn ____________________ ________________ tps ________________url: https://nbn.org.uk url: http://www.tropicos.org/desc: UK National Biodiversity Network desc: Tropicos id_regex: [A-Z]{5}[0-9]{10} id_regex: [0-9]+ rank_levels: rank_levels: _______________________ itis _______________________url: http://www.itis.gov desc: Integrated Taxonomic Information Systemid_regex: [0-9]+ rank_levels: 这篇关于R语言【taxa】——df_ref()：有效的 分类信息数据库的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！
