<\/p>\n
Mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cej sk\u0142adni do podzbioru list w R:<\/span><\/p>\n Poni\u017csze przyk\u0142ady pokazuj\u0105, jak zastosowa\u0107 t\u0119 sk\u0142adni\u0119 z poni\u017csz\u0105 list\u0105:<\/span><\/p>\n Poni\u017cszy kod przedstawia r\u00f3\u017cne sposoby wyodr\u0119bniania elementu listy:<\/span><\/p>\n Nale\u017cy pami\u0119ta\u0107, \u017ce wszystkie trzy metody prowadz\u0105 do tego samego wyniku.<\/span><\/p>\n Poni\u017cszy kod przedstawia r\u00f3\u017cne sposoby wyodr\u0119bniania wielu element\u00f3w listy:<\/span><\/p>\n Obie metody prowadz\u0105 do tego samego rezultatu.<\/span><\/p>\n Poni\u017cszy kod przedstawia r\u00f3\u017cne sposoby wyodr\u0119bnienia okre\u015blonego elementu z elementu listy:<\/span><\/p>\n Obie metody prowadz\u0105 do tego samego rezultatu.<\/span><\/p>\n Jak przekonwertowa\u0107 list\u0119 na ramk\u0119 danych w R<\/a> Mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cej sk\u0142adni do podzbioru list w R: #extract first list item my_list[[1]] #extract first and third list item my_list[c(1, 3)] #extract third element from the first item my_list[[c(1, 3)]] Poni\u017csze przyk\u0142ady pokazuj\u0105, jak zastosowa\u0107 t\u0119 sk\u0142adni\u0119 z poni\u017csz\u0105 list\u0105: #create list my_list <- list(a = 1:3, b = 7, c = ” hey […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-1803","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"\n #extract first list item<\/span>\nmy_list[[1]]\n\n#extract first and third list item\n<\/span>my_list[c(1, 3)]\n\n#extract third element from the first item\n<\/span>my_list[[c(1, 3)]] \n<\/strong><\/pre>\n #create list\n<\/span>my_list <- list(a = 1:3, b = 7, c = \" hey<\/span> \")\n\n#view list\n<\/span>my_list\n\n$a\n[1] 1 2 3\n\n$b\n[1] 7\n\n$c\n[1] \u201chey\u201d\n<\/strong><\/pre>\n Przyk\u0142ad 1: Wyodr\u0119bnij element listy<\/strong><\/span><\/h3>\n
#extract first list item using index value\n<\/span>my_list[[1]]\n\n[1] 1 2 3\n\n#extract first list item using name<\/span>\nmy_list[[\" a<\/span> \"]]\n\n[1] 1 2 3\n\n#extract first list item using name with $ operator<\/span>\nmy_list$a\n\n[1] 1 2 3\n<\/strong><\/pre>\n Przyk\u0142ad 2: Wyodr\u0119bnij wiele element\u00f3w listy<\/span><\/span><\/strong><\/h3>\n
#extract first and third list item using index values\n<\/span>my_list[c(1, 3)]\n\n$a\n[1] 1 2 3\n\n$c\n[1] \u201chey\u201d\n\n#extract first and third list item using names<\/span>\nmy_list[c(\" a<\/span> \", \" c<\/span> \")]\n\n$a [1] 1 2 3\n\n$c [1] \"hey\"\n<\/strong><\/pre>\n Przyk\u0142ad 3: Wyodr\u0119bnij konkretny element z elementu listy<\/strong><\/span><\/h3>\n
#extract third element from the first item using index values\n<\/span>my_list[[c(1, 3)]] \n\n[1] 3\n\n#extract third element from the first item using double brackets<\/span>\nmy_list[[1]][[3]]\n\n[1] 3\n<\/strong><\/pre>\n Dodatkowe zasoby<\/strong><\/span><\/h3>\n
Jak doda\u0107 warto\u015bci do listy w R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"