{"id":2958,"date":"2023-07-19T21:30:46","date_gmt":"2023-07-19T21:30:46","guid":{"rendered":"https:\/\/statorials.org\/ja\/%e4%b8%8d%e9%81%a9%e5%90%88%e3%81%aa%e5%bc%95%e6%95%b0-r\/"},"modified":"2023-07-19T21:30:46","modified_gmt":"2023-07-19T21:30:46","slug":"%e4%b8%8d%e9%81%a9%e5%90%88%e3%81%aa%e5%bc%95%e6%95%b0-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/ja\/%e4%b8%8d%e9%81%a9%e5%90%88%e3%81%aa%e5%bc%95%e6%95%b0-r\/","title":{"rendered":"R \u306e\u30a8\u30e9\u30fc\u3092\u4fee\u6b63\u3059\u308b\u65b9\u6cd5: \u975e\u6e96\u62e0\u306e\u5f15\u6570"},"content":{"rendered":"

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R \u306e\u4f7f\u7528\u6642\u306b\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u30a8\u30e9\u30fc \u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/span><\/p>\n

 Error in matrix2 %*% matrix1: non-conformable arguments\n<\/strong><\/pre>\n
\u3053\u306e\u30a8\u30e9\u30fc\u306f\u30012 \u3064\u306e\u884c\u5217\u3092\u4e57\u7b97\u3057\u3088\u3046\u3068\u3057\u305f\u3068\u304d\u306b\u3001\u5de6\u5074\u306e\u884c\u5217\u306e\u5217<\/strong>\u6570\u304c\u53f3\u5074\u306e\u884c\u5217\u306e\u884c<\/strong>\u6570\u3068\u4e00\u81f4\u3057\u306a\u3044\u5834\u5408\u306b\u767a\u751f\u3057\u307e\u3059\u3002<\/span><\/p>\n
\u6b21\u306e\u4f8b\u306f\u3001\u3053\u306e\u30a8\u30e9\u30fc\u3092\u5b9f\u969b\u306b\u89e3\u6c7a\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n
\u30a8\u30e9\u30fc\u3092\u518d\u73fe\u3059\u308b\u65b9\u6cd5<\/strong><\/span><\/h3>\n
R \u306b\u6b21\u306e 2 \u3064\u306e\u884c\u5217\u304c\u3042\u308b\u3068\u3057\u307e\u3059\u3002<\/span><\/p>\n
 #create first matrix\nmat1 <- matrix(1:10, nrow= 5<\/span> ) \n\nmat1\n\n     [,1] [,2]\n[1,] 1 6\n[2,] 2 7\n[3,] 3 8\n[4,] 4 9\n[5,] 5 10\n\n#create second matrix\n<\/span>mat2 <- matrix(1:6, nrow= 2<\/span> )\n\nmat2\n\n     [,1] [,2] [,3]\n[1,] 1 3 5\n[2,] 2 4 6<\/span><\/span><\/strong><\/pre>\n
\u3053\u3053\u3067\u30012 \u756a\u76ee\u306e\u884c\u5217\u3068\u6700\u521d\u306e\u884c\u5217\u3092\u4e57\u7b97\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3057\u307e\u3059\u3002<\/span><\/p>\n
 #attempt to multiply second matrix by first matrix\nmate2 %*% mate1\n\nError in mat2 %*% mat1: non-conformable arguments\n<\/span><\/span><\/strong><\/pre>\n
\u5de6\u5074\u306e\u884c\u5217<\/strong>\u306e\u5217\u6570 (3) \u304c\u53f3\u5074\u306e\u884c\u5217\u306e\u884c<\/strong>\u6570 (5) \u3068\u4e00\u81f4\u3057\u306a\u3044\u305f\u3081\u3001\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/span><\/p>\n
\u30a8\u30e9\u30fc\u3092\u56de\u907f\u3059\u308b\u65b9\u6cd5<\/strong><\/span><\/h3>\n
\u4e0d\u9069\u5408\u306a\u5f15\u6570\u306e<\/strong>\u30a8\u30e9\u30fc\u3092\u56de\u907f\u3059\u308b\u306b\u306f\u3001\u4ee3\u308f\u308a\u306b\u6700\u521d\u306e\u884c\u5217\u3068 2 \u756a\u76ee\u306e\u884c\u5217\u3092\u4e57\u7b97\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/p>\n
 multiply first matrix by second matrix<\/span>\nmate1 %*% mate2\n\n     [,1] [,2] [,3]\n[1,] 13 27 41\n[2,] 16 34 52\n[3,] 19 41 63\n[4,] 22 48 74\n[5,] 25 55 85\n<\/span><\/span><\/strong><\/pre>\n
\u5de6\u5074\u306e\u884c\u5217\u306e\u5217\u6570 (2) \u304c\u53f3\u5074\u306e\u884c\u5217<\/strong>\u306e\u884c<\/strong>\u6570 (2) \u3068\u4e00\u81f4\u3059\u308b\u305f\u3081\u3001\u4e21\u65b9\u306e\u884c\u5217\u3092\u30a8\u30e9\u30fc\u306a\u304f\u6b63\u5e38\u306b\u4e57\u7b97\u3067\u304d\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/p>\n
 dim()<\/strong>\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u3001\u5404\u884c\u5217\u306e\u5217\u6570\u3068\u884c\u6570\u3092\u8868\u793a\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/span><\/span><\/p>\n
 #view dimensions of first matrix\ndim(mat1)\n\n[1] 5 2\n\n#view dimensions of second matrix\n<\/span>dim(mat2)\n\n[1] 2 3\n<\/span><\/span><\/strong><\/pre>\n
\u3053\u306e\u51fa\u529b\u304b\u3089\u6b21\u306e\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/span><\/p>\n