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学名の属名と種小名から略称を生成する関数
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library(stringr) | |
# お試しデータフレームの作成 | |
df <- data.frame( | |
Species = c("Quercus serrata", "Quercus acuta", "Fagus crenata", "Viburnum odoratissimum var. awabuki"), | |
DBH = c(30, 35, 37, 18)) | |
# 関数の定義 | |
get.abb <- function (species, genus.max = 2, spsn.max = 2, sep = "."){ | |
species <- as.character(species) | |
abb <- paste( | |
substr(species, 1, genus.max), | |
substr(str_split_fixed(species, " ", 10)[, 2], 1, spsn.max), | |
sep = sep) | |
# duplicated(abb) | |
return(abb) | |
} | |
# 関数の実行 | |
get.abb(df$Species) |
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