{"id":337,"date":"2023-08-17T15:35:54","date_gmt":"2023-10-21T00:21:53","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/index.php\/2023\/11\/30\/r%e3%81%aesubstring%ef%bc%88%ef%bc%89%e9%96%a2%e6%95%b0%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6%e7%9f%a5%e3%81%a3%e3%81%a6%e3%81%8a%e3%81%8f%e3%81%b9%e3%81%8d%e3%81%93%e3%81%a8\/"},"modified":"2025-07-31T22:46:55","modified_gmt":"2025-07-31T13:46:55","slug":"r%e3%81%aesubstring%ef%bc%88%ef%bc%89%e9%96%a2%e6%95%b0%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6%e7%9f%a5%e3%81%a3%e3%81%a6%e3%81%8a%e3%81%8f%e3%81%b9%e3%81%8d%e3%81%93%e3%81%a8","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/r%e3%81%aesubstring%ef%bc%88%ef%bc%89%e9%96%a2%e6%95%b0%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6%e7%9f%a5%e3%81%a3%e3%81%a6%e3%81%8a%e3%81%8f%e3%81%b9%e3%81%8d%e3%81%93%e3%81%a8\/","title":{"rendered":"R\u306esubstring\uff08\uff09\u95a2\u6570\u306b\u3064\u3044\u3066\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u3053\u3068"},"content":{"rendered":"<p>R\u306eSubstring()\u95a2\u6570\u306f\u3001\u30c7\u30fc\u30bf\u4e2d\u306b\u5b58\u5728\u3059\u308b\u6587\u5b57\u3092\u62bd\u51fa\u3057\u305f\u308a\u3001\u30c7\u30fc\u30bf\u3092\u64cd\u4f5c\u3057\u305f\u308a\u3059\u308b\u305f\u3081\u306b\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u6587\u5b57\u5217\u304b\u3089\u5fc5\u8981\u306a\u6587\u5b57\u3092\u7c21\u5358\u306b\u62bd\u51fa\u3057\u305f\u308a\u3001\u6587\u5b57\u5217\u5185\u306e\u5024\u3092\u7f6e\u63db\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u307f\u306a\u3055\u3093\u3001\u3053\u3093\u306b\u3061\u306f\u3002\u304a\u5143\u6c17\u3067\u3059\u304b\u3002\u4eca\u65e5\u306fR\u306esubstri ng\u95a2\u6570\u306b\u7126\u70b9\u3092\u5f53\u3066\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>substring()\u95a2\u6570\u306e\u69cb\u6587<\/h2>\n<p>\u65e5\u672c\u8a9e\u3067\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u8a00\u3044\u63db\u3048\u307e\u3059\uff1a\u300c\u6587\u5b57\u5217\u306e\u5024\u306e\u62bd\u51fa\u3084\u7f6e\u63db\u306a\u3069\u3001\u8907\u6570\u306e\u64cd\u4f5c\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u306b\u306f\u3001substr()\u3084substring()\u306a\u3069\u306e\u95a2\u6570\u3092\u4f7f\u7528\u3057\u307e\u3059\u300d\u3002<\/p>\n<pre class=\"post-pre\"><code>substr<span class=\"token punctuation\">(<\/span>x<span class=\"token punctuation\">,<\/span>start<span class=\"token punctuation\">,<\/span>stop<span class=\"token punctuation\">)<\/span>\r\nsubstring<span class=\"token punctuation\">(<\/span>x<span class=\"token punctuation\">,<\/span>first<span class=\"token punctuation\">,<\/span>last<span class=\"token operator\">=<\/span><span class=\"token number\">1000000L<\/span><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u3069\u3053\u3067: (Doko de)<\/p>\n<ul class=\"post-ul\">\n<li>x = the input data \/ file.<\/li>\n<li>Start \/ First= starting index of the substring.<\/li>\n<li>Stop \/ Last= Ending index of the substring.<\/li>\n<\/ul>\n<hr \/>\n<h2>R\u3067substring()\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u6587\u5b57\u5217\u3092\u62bd\u51fa\u3059\u308b\u3002<\/h2>\n<p>\u307e\u3042\u3001\u69cb\u6587\u306b\u3064\u3044\u3066\u304b\u306a\u308a\u7406\u89e3\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u9858\u3063\u3066\u3044\u307e\u3059\u3002\u4eca\u306f\u3001R\u306esubstring\uff08\uff09\u95a2\u6570\u3092\u4f7f\u3063\u3066\u6587\u5b57\u5217\u304b\u3089\u3044\u304f\u3064\u304b\u306e\u6587\u5b57\u3092\u53d6\u308a\u51fa\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token comment\">#returns the characters from 1,11<\/span>\r\ndf<span class=\"token operator\">&lt;-<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Journal_dev_private_limited\"<\/span><span class=\"token punctuation\">)<\/span>\r\nsubstring<span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">11<\/span><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u51fa\u529b = &#8220;\u30b8\u30e3\u30fc\u30ca\u30eb_\u958b\u767a&#8221;<\/p>\n<pre class=\"post-pre\"><code><span class=\"token comment\">#returns the characters from 1-7<\/span>\r\ndf<span class=\"token operator\">&lt;-<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Journal_dev\"<\/span><span class=\"token punctuation\">)<\/span>\r\nsubstring<span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">7<\/span><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u51fa\u529b = \u300c\u30b8\u30e3\u30fc\u30ca\u30eb\u300d<\/p>\n<p>\u304a\u3081\u3067\u3068\u3046\u3054\u3056\u3044\u307e\u3059\u3001\u4e0e\u3048\u3089\u308c\u305f\u6587\u5b57\u5217\u304b\u3089\u30c7\u30fc\u30bf\u3092\u62bd\u51fa\u3057\u307e\u3057\u305f\u3002\u3054\u89a7\u306e\u901a\u308a\u3001R\u306esubstring()\u95a2\u6570\u306f\u3001\u958b\u59cb\/\u6700\u521d\u306e\u5024\u3068\u7d42\u4e86\/\u6700\u5f8c\u306e\u5024\u3092\u5f15\u6570\u3068\u3057\u3066\u53d7\u3051\u53d6\u308a\u3001\u6587\u5b57\u5217\u3092\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3057\u3001\u6307\u5b9a\u3055\u308c\u305f\u7bc4\u56f2\u306e\u90e8\u5206\u6587\u5b57\u5217\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<hr \/>\n<h2>R\u3067substring()\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u7f6e\u304d\u63db\u3048\u308b\u3068\uff1a<\/h2>\n<p>substring\uff08\uff09\u95a2\u6570\u306e\u52a9\u3051\u3092\u501f\u308a\u3066\u3001\u6587\u5b57\u5217\u5185\u306e\u5024\u3092\u597d\u304d\u306a\u5024\u3067\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u9762\u767d\u305d\u3046\u3067\u3059\u3088\u306d\uff1f\u305d\u308c\u3067\u306f\u3001\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u304b\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token comment\">#returns the string by replacing the _ by space<\/span>\r\ndf<span class=\"token operator\">&lt;-<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"We are_developers\"<\/span><span class=\"token punctuation\">)<\/span>\r\nsubstring<span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">,<\/span><span class=\"token number\">7<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">7<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">=<\/span><span class=\"token string\">\" \"<\/span>\r\ndf\r\n<\/code><\/pre>\n<p>\u79c1\u305f\u3061\u306f\u958b\u767a\u8005\u3067\u3059\u3002 (Watashitachi wa kaihatsushadesu)<\/p>\n<pre class=\"post-pre\"><code><span class=\"token comment\">#string replacement <\/span>\r\ndf<span class=\"token operator\">&lt;-<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"R=is a language made for statistical analysis\"<\/span><span class=\"token punctuation\">)<\/span>\r\nsubstring<span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">=<\/span><span class=\"token string\">\" \"<\/span>\r\ndf\r\n<\/code><\/pre>\n<p>\u51fa\u529b = \u300cR\u306f\u7d71\u8a08\u5206\u6790\u306e\u305f\u3081\u306b\u4f5c\u3089\u308c\u305f\u8a00\u8a9e\u3067\u3059\u300d<\/p>\n<p>\u3059\u3054\u3044\uff01\u3053\u308c\u3067\u3001\u6587\u5b57\u5217\u5185\u306e\u5024\u3092\u81ea\u5206\u306e\u5e0c\u671b\u3059\u308b\u5024\u306b\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4e0a\u8a18\u306e\u5834\u5408\u3001\u3042\u306a\u305f\u306f\u300c_\u300d\uff08\u30a2\u30f3\u30c0\u30fc\u30b9\u30b3\u30a2\uff09\u3068\u300c=\u300d\uff08\u30a4\u30b3\u30fc\u30eb\u30b5\u30a4\u30f3\uff09\u3092\u300c \u300d\uff08\u30b9\u30da\u30fc\u30b9\uff09\u3067\u7f6e\u304d\u63db\u3048\u307e\u3057\u305f\u3002\u3082\u3063\u3068\u7406\u89e3\u3057\u3066\u3044\u305f\u3060\u3051\u305f\u3089\u5b09\u3057\u3044\u3067\u3059\u3002<\/p>\n<hr \/>\n<h2>substring()\u95a2\u6570\u3092\u4f7f\u7528\u3057\u305f\u6587\u5b57\u5217\u306e\u7f6e\u63db\u5148<\/h2>\n<p>\u4eca\u307e\u3067\u3001\u3059\u3079\u3066\u304c\u826f\u3044\u3067\u3059\uff01\u3057\u304b\u3057\u3001\u3082\u3057\u3082\u3044\u304f\u3064\u304b\u306e\u5024\u3092\u7f6e\u304d\u63db\u3048\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u5834\u5408\u3001\u305d\u308c\u306f\u3059\u3079\u3066\u306e\u6587\u5b57\u5217\u306b\u53cd\u6620\u3055\u308c\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u5fc3\u914d\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\uff01\u79c1\u305f\u3061\u306f\u5024\u3092\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u305d\u308c\u3089\u3092\u3059\u3079\u3066\u306e\u6587\u5b57\u5217\u306b\u53cd\u6620\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3069\u3046\u3084\u3063\u3066\u305d\u308c\u304c\u52d5\u304f\u304b\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff01 (D\u014dyatte sore ga ugoku ka mite mimash\u014d!)<\/p>\n<pre class=\"post-pre\"><code><span class=\"token comment\">#replaces the 4th letter of each string by $<\/span>\r\ndf<span class=\"token operator\">&lt;-<\/span>c<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Alok\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"Joseph\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"Hayato\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"Kelly\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"Paloma\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"Moca\"<\/span><span class=\"token punctuation\">)<\/span>\r\nsubstring<span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&lt;-<\/span>c<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"$\"<\/span><span class=\"token punctuation\">)<\/span>\r\ndf\r\n<\/code><\/pre>\n<p>\u51fa\u529b = &#8220;\u30a2\u30ed$&#8221;\u3001&#8221;\u30b8\u30e7\u30b9$&#8221;\u3001&#8221;\u30cf\u30e6$&#8221;\u3001&#8221;\u30b1\u30eb$&#8221;\u3001&#8221;\u30d1\u30eb$&#8221;\u3001&#8221;\u30e2\u30af$&#8221;<\/p>\n<p>\u3042\u3089\u3001\u4f55\u304c\u8d77\u3053\u3063\u305f\u306e\uff1f\u6587\u5b57\u5217\u306e4\u756a\u76ee\u306e\u6587\u5b57\u304c\u3059\u3079\u3066\u300c$\u300d\u306b\u7f6e\u304d\u63db\u308f\u3063\u3061\u3083\u3063\u305f\u306e\uff01<\/p>\n<p>\u305d\u308c\u304csubstring()\u3067\u3059\u3002\u305d\u308c\u306b\u3088\u3063\u3066\u3001\u6307\u5b9a\u3055\u308c\u305f\u4f4d\u7f6e\u306b\u79c1\u305f\u3061\u306e\u6307\u5b9a\u3057\u305f\u5024\u3092\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>(Sore ga substring() desu. Sore ni yotte, sadei sareta ichi ni watashitachi no teishi shita atai o okikaeru koto ga dekimasu.)<\/p>\n<p>\u4e0a\u8a18\u306e\u5834\u5408\u3001\u3059\u3079\u3066\u306e\u5165\u529b\u6587\u5b57\u5217\u306e4\u6587\u5b57\u76ee\u3054\u3068\u306b\u3001substring() \u95a2\u6570\u306b\u3088\u3063\u3066\u300c$\u300d\u8a18\u53f7\u3067\u7f6e\u304d\u63db\u3048\u3089\u308c\u307e\u3057\u305f\u3002\u4fe1\u3058\u3089\u308c\u306a\u3044\u3067\u3059\u3088\u306d\uff1f\u79c1\u306f\u305d\u3046\u8a00\u3044\u307e\u3059\u3002\u3067\u306f\u3001\u3042\u306a\u305f\u306f\u3069\u3046\u3067\u3059\u304b\uff1f<\/p>\n<hr \/>\n<h2>R\u3067\u306esubstr()\u95a2\u6570\u3068str_sub()\u95a2\u6570\u306e\u4f7f\u7528<\/h2>\n<p>\u79c1\u305f\u3061\u306f\u3059\u3067\u306b\u884c\u306b\u7126\u70b9\u3092\u5f53\u3066\u3066\u304d\u307e\u3057\u305f\u3002\u4eca\u5ea6\u306f\u3001\u5217\u306e\u6587\u5b57\u306e\u62bd\u51fa\u306b\u3064\u3044\u3066\u3082\u8abf\u3079\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u3055\u3066\u3001\u305d\u308c\u304c\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u306e\u304b\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff01(Sate, sore ga dono y\u014d ni kin\u014d suru no ka mite mimashou!)<\/p>\n<p>\u79c1\u305f\u3061\u306f\u3001Technologies\u3068popularity\u3068\u3044\u30462\u3064\u306e\u5217\u3092\u6301\u3064\u30b5\u30f3\u30d7\u30eb\u30c7\u30fc\u30bf\u3092\u4f7f\u3063\u3066\u30c7\u30fc\u30bf\u30d5\u30ec\u30fc\u30e0\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30c7\u30fc\u30bf\u304b\u3089\u7279\u5b9a\u306e\u6587\u5b57\u3092\u62bd\u51fa\u3057\u307e\u3057\u3087\u3046\u3002\u697d\u3057\u307f\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token comment\">#creates the data frame<\/span>\r\ndf<span class=\"token operator\">&lt;-<\/span>data.frame<span class=\"token punctuation\">(<\/span>Technologies<span class=\"token operator\">=<\/span>c<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Datascience\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"machinelearning\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"Deeplearning\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"Artificalintelligence\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>Popularity<span class=\"token operator\">=<\/span>c<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"70%\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"85%\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"90%\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"95%\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\ndf\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>           Technologies      Popularity\r\n1           Datascience        70%\r\n2       machinelearning        85%\r\n3          Deeplearning        90%\r\n4 Artificalintelligence        95%\r\n<\/code><\/pre>\n<p>\u306f\u3044\u3001\u79c1\u305f\u3061\u306f\u30c7\u30fc\u30bf\u30d5\u30ec\u30fc\u30e0\u3092\u4f5c\u6210\u3057\u307e\u3057\u305f\u3002\u30c6\u30ad\u30b9\u30c8\u3092\u62bd\u51fa\u3057\u307e\u3057\u3087\u3046\u3002\u305d\u306e\u305f\u3081\u306b\u3001R\u306esubstr()\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u3001Technologies\u5217\u306e\u3059\u3079\u3066\u306e\u6587\u5b57\u5217\u304b\u30898\u301c10\u6587\u5b57\u3092\u62bd\u51fa\u3059\u308b\u305f\u3081\u306e\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token comment\">#creates new column with extracted values<\/span>\r\ndf<span class=\"token operator\">$<\/span>Extracted_Technologies<span class=\"token operator\">=<\/span>substr<span class=\"token punctuation\">(<\/span>df<span class=\"token operator\">$<\/span>Technologies<span class=\"token punctuation\">,<\/span><span class=\"token number\">8<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span>\r\ndf\r\n<\/code><\/pre>\n<p>\u30a2\u30a6\u30c8\u30d7\u30c3\u30c8<\/p>\n<pre class=\"post-pre\"><code>             Technologies       Popularity     Extracted_Technologies\r\n1           Datascience_DS        70%                    enc\r\n2       machinelearning_ML        85%                    lea\r\n3          Deeplearning_DL        90%                    rni\r\n4 Artificalintelligence_AI        95%                    ali\r\n<\/code><\/pre>\n<p>\u4eca\u3001\u65b0\u3057\u3044\u5217\u3092\u4f5c\u6210\u3057\u3066\u30c7\u30fc\u30bf\u3092\u62bd\u51fa\u3067\u304d\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306b\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u5024\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u30c7\u30fc\u30bf\u3092\u62bd\u51fa\u3067\u304d\u307e\u3059\u3002<\/p>\n<hr \/>\n<h3>R\u3067str_sub()\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b<\/h3>\n<p>\u79c1\u305f\u3061\u306fsubstr()\u95a2\u6570\u304c\u52d5\u4f5c\u3057\u3066\u3044\u308b\u306e\u3092\u898b\u307e\u3057\u305f\u3002\u3055\u3066\u3001\u524d\u306b\u3082\u8ff0\u3079\u305f\u3088\u3046\u306b\u3001\u4eca\u5ea6\u306fstr_sub()\u95a2\u6570\u3068\u305d\u306e\u62bd\u51fa\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8abf\u3079\u3066\u307f\u307e\u3059\u3002<\/p>\n<p>\u884c\u3053\u3046\u305c\uff01 (Ikou ze!)<\/p>\n<p>\u79c1\u305f\u3061\u306f\u518d\u3073\u3001\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3068\u305d\u306e\u4eba\u6c17\u306e\u30c7\u30fc\u30bf\u3092\u542b\u3093\u3060\u540c\u3058\u30c7\u30fc\u30bf\u30d5\u30ec\u30fc\u30e0\u3092\u4f5c\u6210\u3059\u308b\u4e88\u5b9a\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>df<span class=\"token operator\">&lt;-<\/span>data.frame<span class=\"token punctuation\">(<\/span>Technologies<span class=\"token operator\">=<\/span>c<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Datascience\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"machinelearning\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"Deeplearning\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"Artificalintelligence\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>Popularity<span class=\"token operator\">=<\/span>c<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"70%\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"85%\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"90%\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"95%\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\ndf\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>           Technologies      Popularity\r\n1           Datascience        70%\r\n2       machinelearning        85%\r\n3          Deeplearning        90%\r\n4 Artificalintelligence        95%\r\n<\/code><\/pre>\n<p>\u3055\u3066\u3001\u51fa\u529b\u3068\u3057\u3066\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3055\u308c\u305f\u6587\u5b57\u3092\u8fd4\u3059 str_sub() \u95a2\u6570\u3092\u6d3b\u7528\u3057\u307e\u3057\u3087\u3046\u3002R \u3067\u306e\u90e8\u5206\u6587\u5b57\u5217\u306e\u53d6\u5f97\/\u751f\u6210\u306f\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u304c\u3042\u308a\u3001\u3053\u308c\u306f\u305d\u306e\u4e00\u3064\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token comment\">#using the str_sub function<\/span>\r\ndf<span class=\"token operator\">$<\/span>Extracted_Technologies<span class=\"token operator\">=<\/span>str_sub<span class=\"token punctuation\">(<\/span>df<span class=\"token operator\">$<\/span>Technologies<span class=\"token punctuation\">,<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">15<\/span><span class=\"token punctuation\">)<\/span>\r\n<span class=\"token operator\">&gt;<\/span> df\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3001str_sub()\u95a2\u6570\u306f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u5024\u3092\u62bd\u51fa\u3057\u3066\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u51fa\u529b\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>           Technologies   Popularity    Extracted_Technologies\r\n1           Datascience        70%                     ce\r\n2       machinelearning        85%                 arning\r\n3          Deeplearning        90%                    ing\r\n4 Artificalintelligence        95%                 intell\r\n<\/code><\/pre>\n<hr \/>\n<h2>\u307e\u3068\u3081\u308b<\/h2>\n<p>\u4e0e\u3048\u3089\u308c\u305f\u6587\u5b57\u5217\u306e\u4e00\u90e8\u3092\u53d6\u3063\u305f\u308a\u751f\u6210\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u306f\u975e\u5e38\u306b\u7c21\u5358\u306a\u4ed5\u4e8b\u3067\u3059\u3002substr()\u3001substring()\u3001str_sub()\u306a\u3069\u306e\u95a2\u6570\u306e\u304a\u304b\u3052\u3067\u3001\u90e8\u5206\u6587\u5b57\u5217\u3092\u6271\u3046\u3053\u3068\u304c\u9762\u767d\u304f\u8208\u5473\u6df1\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>\u4eca\u306f\u4ee5\u4e0a\u3067\u3059\u3002\u3053\u306e\u7d20\u6674\u3089\u3057\u3044\u6a5f\u80fd\u3092\u8a08\u7b97\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3092\u5fd8\u308c\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u30b5\u30d6\u30b9\u30c8\u30ea\u30f3\u30b0\u3092\u697d\u3057\u3093\u3067\u304f\u3060\u3055\u3044\uff01<\/p>\n<p>\u3082\u3063\u3068\u52c9\u5f37\u3059\u308b\u3053\u3068\uff1aR\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3<\/p>\n","protected":false},"excerpt":{"rendered":"<p>R\u306eSubstring()\u95a2\u6570\u306f\u3001\u30c7\u30fc\u30bf\u4e2d\u306b\u5b58\u5728\u3059\u308b\u6587\u5b57\u3092\u62bd\u51fa\u3057\u305f\u308a\u3001\u30c7\u30fc\u30bf\u3092\u64cd\u4f5c\u3057\u305f\u308a\u3059\u308b\u305f\u3081\u306b\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u6587\u5b57\u5217\u304b\u3089\u5fc5\u8981\u306a\u6587\u5b57\u3092\u7c21\u5358\u306b\u62bd\u51fa\u3057\u305f\u308a\u3001\u6587\u5b57\u5217\u5185\u306e\u5024\u3092\u7f6e\u63db\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u307f\u306a\u3055\u3093\u3001\u3053\u3093 [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-337","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>R\u306esubstring\uff08\uff09\u95a2\u6570\u306b\u3064\u3044\u3066\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u3053\u3068 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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