{"id":3373,"date":"2023-07-17T20:03:23","date_gmt":"2023-07-17T20:03:23","guid":{"rendered":"https:\/\/statorials.org\/ko\/r-%e1%84%91%e1%85%a1%e1%84%8b%e1%85%b5%e1%84%91%e1%85%b3\/"},"modified":"2023-07-17T20:03:23","modified_gmt":"2023-07-17T20:03:23","slug":"r-%e1%84%91%e1%85%a1%e1%84%8b%e1%85%b5%e1%84%91%e1%85%b3","status":"publish","type":"post","link":"https:\/\/statorials.org\/ko\/r-%e1%84%91%e1%85%a1%e1%84%8b%e1%85%b5%e1%84%91%e1%85%b3\/","title":{"rendered":"R\uc5d0\uc11c \ud30c\uc774\ud504 \uc5f0\uc0b0\uc790\ub97c \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95(\uc608\uc81c \ud3ec\ud568)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">R\uc5d0\uc11c \ud30c\uc774\ud504 \uc5f0\uc0b0\uc790( <strong>%&gt;%<\/strong> )\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc77c\ub828\uc758 \uc791\uc5c5\uc744 \ud568\uaed8 &#8220;\ud30c\uc774\ud504&#8221;\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774 \uc5f0\uc0b0\uc790\ub294 \ub370\uc774\ud130 \ud504\ub808\uc784\uc5d0\uc11c \uc77c\ub828\uc758 \uc791\uc5c5\uc744 \uc218\ud589\ud558\uae30 \uc704\ud574 R\uc758 <a href=\"https:\/\/dplyr.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">dplyr<\/a> \ud328\ud0a4\uc9c0\uc640 \ud568\uaed8 \uac00\uc7a5 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ud30c\uc774\ud504 \uc5f0\uc0b0\uc790\uc758 \uae30\ubcf8 \uad6c\ubb38\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong>df %&gt;% \n  do_this_operation %&gt;% \n  then_do_this_operation %&gt;%\n  then_do_this_operation ...<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">\ud30c\uc774\ud504 \uc5f0\uc0b0\uc790\ub294 \ub2e8\uc21c\ud788 \ud55c \uc791\uc5c5\uc758 \uacb0\uacfc\ub97c \uadf8 \uc544\ub798\uc758 \ub2e4\uc74c \uc791\uc5c5\uc73c\ub85c \uc804\ub2ec\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ud30c\uc774\ud504 \uc5f0\uc0b0\uc790\ub97c \uc0ac\uc6a9\ud558\uba74 \ucf54\ub4dc\ub97c \ub9e4\uc6b0 \uc27d\uac8c \uc77d\uc744 \uc218 \uc788\ub2e4\ub294 \uc7a5\uc810\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \uc608\uc5d0\uc11c\ub294 R\uc5d0 \ub0b4\uc7a5\ub41c <a href=\"https:\/\/statorials.org\/ko\/mtcars-r-\u1103\u1166\u110b\u1175\u1110\u1165-\u1109\u1166\u1110\u1173\/\" target=\"_blank\" rel=\"noopener\">mtcars<\/a> \ub370\uc774\ud130 \uc138\ud2b8\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub2e4\uc591\ud55c \uc2dc\ub098\ub9ac\uc624\uc5d0\uc11c \ud30c\uc774\ud504 \uc5f0\uc0b0\uc790\ub97c \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008080;\">#view first six rows of mtcars dataset<\/span>\nhead(mtcars)\n\n                   mpg cyl disp hp drat wt qsec vs am gear carb\nMazda RX4 21.0 6 160 110 3.90 2.620 16.46 0 1 4 4\nMazda RX4 Wag 21.0 6 160 110 3.90 2.875 17.02 0 1 4 4\nDatsun 710 22.8 4 108 93 3.85 2.320 18.61 1 1 4 1\nHornet 4 Drive 21.4 6 258 110 3.08 3.215 19.44 1 0 3 1\nHornet Sportabout 18.7 8 360 175 3.15 3.440 17.02 0 0 3 2\nValiant 18.1 6 225 105 2.76 3,460 20.22 1 0 3 1\n<\/strong><\/span><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>\uc608 1: \ud30c\uc774\ud504 \uc5f0\uc0b0\uc790\ub97c \uc0ac\uc6a9\ud558\uc5ec \ubcc0\uc218 \uc694\uc57d<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 \ud30c\uc774\ud504 \uc5f0\uc0b0\uc790( <strong>%&gt;%<\/strong> )\ub97c \uc0ac\uc6a9\ud558\uc5ec <strong>cyl<\/strong> \ubcc0\uc218\ubcc4\ub85c \uadf8\ub8f9\ud654\ud55c \ub2e4\uc74c <strong>mpg<\/strong> \ubcc0\uc218\uc758 \ud3c9\uade0 \uac12\uc744 \uc694\uc57d\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">library<\/span> (dplyr)\n\n<span style=\"color: #008080;\">#summarize mean mpg grouped by cyl<\/span>\nmtcars %&gt;% \n  group_by(cyl) %&gt;% \n  summarize(mean_mpg = mean(mpg))\n\n# A tibble: 3 x 2\n    cyl mean_mpg\n      \n1 4 26.7\n2 6 19.7\n3 8 15.1\n<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">\uacb0\uacfc\uc5d0\uc11c \uc6b0\ub9ac\ub294 \ub2e4\uc74c\uc744 \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\uc2e4\ub9b0\ub354 \uac12\uc774 4\uc778 \uc790\ub3d9\ucc28\uc758 \ud3c9\uade0 mpg \uac12\uc740 <strong>26.7<\/strong> \uc785\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\">\uc2e4\ub9b0\ub354 \uac12\uc774 6\uc778 \uc790\ub3d9\ucc28\uc758 \ud3c9\uade0 mpg \uac12\uc740 <strong>19.7<\/strong> \uc785\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\">\uc2e4\ub9b0\ub354 \uac12\uc774 8\uc778 \uc790\ub3d9\ucc28\uc758 \ud3c9\uade0 mpg \uac12\uc740 <strong>15.1<\/strong> \uc785\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\ud30c\uc774\ud504 \uc5f0\uc0b0\uc790\uac00 \ucf54\ub4dc \ud574\uc11d\uc744 \uc5b4\ub5bb\uac8c \ub354 \uc27d\uac8c \ub9cc\ub4dc\ub294\uc9c0 \ud655\uc778\ud558\uc138\uc694.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uae30\ubcf8\uc801\uc73c\ub85c \uadf8\ub294 \uc774\ub807\uac8c \ub9d0\ud569\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>mtcars<\/strong> \ub370\uc774\ud130 \ud504\ub808\uc784\uc744 \uac00\uc838\uc635\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>cyl<\/strong> \ubcc0\uc218\ub85c \uadf8\ub8f9\ud654\ud558\uc2ed\uc2dc\uc624.<\/span><\/li>\n<li> <span style=\"color: #000000;\">\uadf8\ub7f0 \ub2e4\uc74c <strong>mpg<\/strong> \ubcc0\uc218\uc758 \ud3c9\uade0\uac12\uc744 \uc694\uc57d\ud569\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<h2> <span style=\"color: #000000;\"><strong>\uc608 2: \ud30c\uc774\ud504 \uc5f0\uc0b0\uc790\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc5ec\ub7ec \ubcc0\uc218\ub97c \uadf8\ub8f9\ud654\ud558\uace0 \uc694\uc57d\ud569\ub2c8\ub2e4.<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 \ud30c\uc774\ud504 \uc5f0\uc0b0\uc790( <strong>%&gt;%<\/strong> )\ub97c \uc0ac\uc6a9\ud558\uc5ec <strong>cyl<\/strong> \ubc0f <strong>am<\/strong> \ubcc0\uc218\ub97c \uae30\uc900\uc73c\ub85c \uadf8\ub8f9\ud654\ud55c \ub2e4\uc74c <strong>mpg<\/strong> \ubcc0\uc218\uc758 \ud3c9\uade0\uacfc <strong>hp<\/strong> \ubcc0\uc218\uc758 \ud45c\uc900 \ud3b8\ucc28\ub97c \uc694\uc57d\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">library<\/span> (dplyr)\n\n<span style=\"color: #008080;\">#summarize mean mpg and standard dev of hp grouped by cyl and am<\/span>\nmtcars %&gt;% \n  group_by(cyl, am) %&gt;% \n  summarize(mean_mpg = mean(mpg),\n            sd_hp = sd(hp))\n\n# A tibble: 6 x 4\n# Groups: cyl[3]\n    cyl am mean_mpg sd_hp\n        \n1 4 0 22.9 19.7 \n2 4 1 28.1 22.7 \n3 6 0 19.1 9.18\n4 6 1 20.6 37.5 \n5 8 0 15.0 33.4 \n6 8 1 15.4 50.2 \n<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">\uacb0\uacfc\uc5d0\uc11c \uc6b0\ub9ac\ub294 \ub2e4\uc74c\uc744 \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">cyl \uac12\uc774 4\uc774\uace0 am \uac12\uc774 0\uc778 \uc790\ub3d9\ucc28\uc758 \uacbd\uc6b0 \ud3c9\uade0 mpg \uac12\uc740 <strong>22.9<\/strong> \uc774\uace0 hp \uac12\uc758 \ud45c\uc900 \ud3b8\ucc28\ub294 <strong>19.7<\/strong> \uc785\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\">cyl \uac12\uc774 4\uc774\uace0 am \uac12\uc774 1\uc778 \uc790\ub3d9\ucc28\uc758 \uacbd\uc6b0 \ud3c9\uade0 mpg \uac12\uc740 <b>28.1<\/b> \uc774\uace0 hp \uac12\uc758 \ud45c\uc900 \ud3b8\ucc28\ub294 <strong>22.7<\/strong> \uc785\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\ub4f1\ub4f1.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc2dc \ud55c \ubc88, \ud30c\uc774\ud504 \uc5f0\uc0b0\uc790\uac00 \ucf54\ub4dc \ud574\uc11d\uc744 \uc5b4\ub5bb\uac8c \ub354 \uc27d\uac8c \ub9cc\ub4dc\ub294\uc9c0 \ud655\uc778\ud558\uc138\uc694.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uae30\ubcf8\uc801\uc73c\ub85c \uadf8\ub294 \uc774\ub807\uac8c \ub9d0\ud569\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>mtcars<\/strong> \ub370\uc774\ud130 \ud504\ub808\uc784\uc744 \uac00\uc838\uc635\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>cyl<\/strong> \ubc0f <strong>am<\/strong> \ubcc0\uc218\ub85c \uadf8\ub8f9\ud654\ud569\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\">\uadf8\ub7f0 \ub2e4\uc74c <strong>mpg<\/strong> \ubcc0\uc218\uc758 \ud3c9\uade0\uac12\uacfc <strong>hp<\/strong> \ubcc0\uc218\uc758 \ud45c\uc900\ud3b8\ucc28\ub97c \uc694\uc57d\ud569\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<h2> <span style=\"color: #000000;\"><strong>\uc608 3: \ud30c\uc774\ud504 \uc5f0\uc0b0\uc790\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc0c8 \ubcc0\uc218 \uc0dd\uc131<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 <strong>dplyr<\/strong> \ud328\ud0a4\uc9c0\uc758 <a href=\"https:\/\/statorials.org\/ko\/mutate\u1105\u1173\u11af-\u1109\u1161\u110b\u116d\u11bc\u1112\u1161\u110b\u1167-r\u110b\u1166\u1109\u1165-\u1109\u1162-\u1107\u1167\u11ab\u1109\u116e\u1105\u1173\u11af-\u1106\u1161\u11ab\u1103\u1173\u1102\u1173\u11ab-\u1107\u1161\u11bc\u1107\u1165\u11b8\/\" target=\"_blank\" rel=\"noopener\">mutate<\/a> \ud568\uc218\uc640 \ud568\uaed8 \ud30c\uc774\ud504 \uc5f0\uc0b0\uc790( <strong>%&gt;%<\/strong> )\ub97c \uc0ac\uc6a9\ud558\uc5ec mtcars \ub370\uc774\ud130 \ud504\ub808\uc784\uc5d0 \ub450 \uac1c\uc758 \uc0c8 \ubcc0\uc218\ub97c \uc0dd\uc131\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">library<\/span> (dplyr)\n\n<span style=\"color: #008080;\">#add two new variables in mtcars\n<span style=\"color: #000000;\">new_mtcars &lt;- mtcars %&gt;%\n                mutate(mpg2 = mpg*2,\n                       mpg_root = sqrt(mpg))<\/span>\n\n#view first six rows of new data frame\n<span style=\"color: #000000;\">head(new_mtcars)\n\n   mpg cyl disp hp drat wt qsec vs am gear carb mpg2 mpg_root\n1 21.0 6 160 110 3.90 2.620 16.46 0 1 4 4 42.0 4.582576\n2 21.0 6 160 110 3.90 2.875 17.02 0 1 4 4 42.0 4.582576\n3 22.8 4 108 93 3.85 2.320 18.61 1 1 4 1 45.6 4.774935\n4 21.4 6 258 110 3.08 3.215 19.44 1 0 3 1 42.8 4.626013\n5 18.7 8 360 175 3.15 3.440 17.02 0 0 3 2 37.4 4.324350\n6 18.1 6 225 105 2.76 3.460 20.22 1 0 3 1 36.2 4.254409<\/span><\/span><\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">\uacb0\uacfc\uc5d0\uc11c \uc6b0\ub9ac\ub294 \ub2e4\uc74c\uc744 \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><span style=\"color: #000000;\">\uc0c8\ub85c\uc6b4 <strong>mpg2<\/strong> \uc5f4\uc5d0\ub294 <strong>mpg<\/strong> \uc5f4\uc758 \uac12\uc5d0 2\ub97c \uacf1\ud55c \uac12\uc774 \ud3ec\ud568\ub429\ub2c8\ub2e4.<\/span><\/span><\/li>\n<li> <span style=\"color: #000000;\">\uc0c8\ub85c\uc6b4 <strong>mpg_root<\/strong> \uc5f4\uc5d0\ub294 <strong>mpg<\/strong> \uc5f4 \uac12\uc758 \uc81c\uacf1\uadfc\uc774 \ud3ec\ud568\ub429\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\ub2e4\uc2dc \ud55c \ubc88, \ud30c\uc774\ud504 \uc5f0\uc0b0\uc790\uac00 \ucf54\ub4dc \ud574\uc11d\uc744 \uc5b4\ub5bb\uac8c \ub354 \uc27d\uac8c \ub9cc\ub4dc\ub294\uc9c0 \ud655\uc778\ud558\uc138\uc694.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uae30\ubcf8\uc801\uc73c\ub85c \uadf8\ub294 \uc774\ub807\uac8c \ub9d0\ud569\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>mtcars<\/strong> \ub370\uc774\ud130 \ud504\ub808\uc784\uc744 \uac00\uc838\uc635\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><span style=\"color: #000000;\"><strong>mpg2<\/strong> \ub77c\ub294 \uc0c8 \uc5f4\uacfc <strong>mpg_root<\/strong> \ub77c\ub294 \uc0c8 \uc5f4\uc744 \ub9cc\ub4ed\ub2c8\ub2e4.<\/span><\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\"><strong>\uad00\ub828 \ud56d\ubaa9:<\/strong> <a href=\"https:\/\/statorials.org\/ko\/r-dplyr-\u1107\u1167\u11ab\u1112\u116a\u11ab\/\" target=\"_blank\" rel=\"noopener\">dplyr\uc5d0\uc11c transmute() \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95<\/a><\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>\ucd94\uac00 \ub9ac\uc18c\uc2a4<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ud29c\ud1a0\ub9ac\uc5bc\uc5d0\uc11c\ub294 R\uc5d0\uc11c \ub2e4\ub978 \uc77c\ubc18\uc801\uc778 \uae30\ub2a5\uc744 \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95\uc744 \uc124\uba85\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/ko\/\u1106\u116e\u11af\u1100\u1167\u11af\u1111\u116d\u1105\u1173\u11af-r\u1105\u1169\/\" target=\"_blank\" rel=\"noopener\">R\uc5d0\uc11c \ubb3c\uacb0\ud45c \uc5f0\uc0b0\uc790(~)\ub97c \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/\u1103\u1161\u11af\u1105\u1165-\u1100\u1175\u1112\u1169-r\/\" target=\"_blank\" rel=\"noopener\">R\uc5d0\uc11c \ub2ec\ub7ec \uae30\ud638 \uc5f0\uc0b0\uc790($)\ub97c \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/r\u110b\u1166\u1102\u1173\u11ab-\u110b\u1165\u11b9\u110b\u1165\/\" target=\"_blank\" rel=\"noopener\">R\uc5d0\uc11c &#8220;NOT IN&#8221; \uc5f0\uc0b0\uc790\ub97c \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/r\u110b\u1174-in-\u110b\u1167\u11ab\u1109\u1161\u11ab\u110c\u1161\/\" target=\"_blank\" rel=\"noopener\">R\uc5d0\uc11c %in% \uc5f0\uc0b0\uc790\ub97c \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>R\uc5d0\uc11c \ud30c\uc774\ud504 \uc5f0\uc0b0\uc790( %&gt;% )\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc77c\ub828\uc758 \uc791\uc5c5\uc744 \ud568\uaed8 &#8220;\ud30c\uc774\ud504&#8221;\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \uc5f0\uc0b0\uc790\ub294 \ub370\uc774\ud130 \ud504\ub808\uc784\uc5d0\uc11c \uc77c\ub828\uc758 \uc791\uc5c5\uc744 \uc218\ud589\ud558\uae30 \uc704\ud574 R\uc758 dplyr \ud328\ud0a4\uc9c0\uc640 \ud568\uaed8 \uac00\uc7a5 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \ud30c\uc774\ud504 \uc5f0\uc0b0\uc790\uc758 \uae30\ubcf8 \uad6c\ubb38\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4. df %&gt;% do_this_operation %&gt;% then_do_this_operation %&gt;% then_do_this_operation &#8230; \ud30c\uc774\ud504 \uc5f0\uc0b0\uc790\ub294 \ub2e8\uc21c\ud788 \ud55c \uc791\uc5c5\uc758 \uacb0\uacfc\ub97c \uadf8 \uc544\ub798\uc758 \ub2e4\uc74c \uc791\uc5c5\uc73c\ub85c \uc804\ub2ec\ud569\ub2c8\ub2e4. \ud30c\uc774\ud504 \uc5f0\uc0b0\uc790\ub97c \uc0ac\uc6a9\ud558\uba74 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-3373","post","type-post","status-publish","format-standard","hentry","category-20"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>R\uc5d0\uc11c \ud30c\uc774\ud504 \uc5f0\uc0b0\uc790\ub97c \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95(\uc608\uc81c \ud3ec\ud568) - Statorials<\/title>\n<meta name=\"description\" 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