{"id":18349,"date":"2022-10-31T04:30:38","date_gmt":"2022-10-30T23:00:38","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-change-data-frame-into-array-closed\/"},"modified":"2022-10-31T04:30:38","modified_gmt":"2022-10-30T23:00:38","slug":"solved-change-data-frame-into-array-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-change-data-frame-into-array-closed\/","title":{"rendered":"[Solved] Change data.frame into array [closed]"},"content":{"rendered":"

[ad_1]
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This is a really unusual thing to do.<\/p>\n

No, it’s worse than unusual. It’s probably just bad. Matrices and arrays are useful, appropriate and very fast if all of the data is of a single class. If you have mixed classes, then work with data frames instead.<\/strong><\/p>\n

But here you go. In the first example all of your data is converted to character<\/code>, in the second to numeric<\/code>.<\/p>\n

x <- as.array(as.matrix(iris))\n\nhead(x)\n     Sepal.Length Sepal.Width Petal.Length Petal.Width Species \n[1,] \"5.1\"        \"3.5\"       \"1.4\"        \"0.2\"       \"setosa\"\n[2,] \"4.9\"        \"3.0\"       \"1.4\"        \"0.2\"       \"setosa\"\n[3,] \"4.7\"        \"3.2\"       \"1.3\"        \"0.2\"       \"setosa\"\n[4,] \"4.6\"        \"3.1\"       \"1.5\"        \"0.2\"       \"setosa\"\n[5,] \"5.0\"        \"3.6\"       \"1.4\"        \"0.2\"       \"setosa\"\n[6,] \"5.4\"        \"3.9\"       \"1.7\"        \"0.4\"       \"setosa\"\n<\/code><\/pre>\n
Or…<\/p>\n
x <- array(unlist(iris), dim=c(150, 5), dimnames=list(NULL, names(iris)))\n\nhead(x)\n     Sepal.Length Sepal.Width Petal.Length Petal.Width Species\n[1,]          5.1         3.5          1.4         0.2       1\n[2,]          4.9         3.0          1.4         0.2       1\n[3,]          4.7         3.2          1.3         0.2       1\n[4,]          4.6         3.1          1.5         0.2       1\n[5,]          5.0         3.6          1.4         0.2       1\n[6,]          5.4         3.9          1.7         0.4       1\n<\/code><\/pre>\n<\/p><\/div>\n
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            1<\/span> <\/p><\/div>\n<\/div>\n
[ad_2]<\/p>\n
solved Change data.frame into array [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"
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In the first … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[321],"class_list":["post-18349","post","type-post","status-publish","format-standard","hentry","category-solved","tag-r"],"yoast_head":"\n[Solved] Change data.frame into array [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-change-data-frame-into-array-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Change data.frame into array [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] This is a really unusual thing to do. No, it’s worse than unusual. 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