data.table
기본 문법
- i: 행 선택
- j: 열 선택 or 함수 적용
- by: 집단 나눔
fread / fwrite
속도가 매우 빠름 (R의 base 함수보다 40배 더 빠름)
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 562083 200909 0 0 1
2: 2009 334536 200911 0 0 0
3: 2009 911867 200903 0 0 0
4: 2009 183321 200908 NA NA NA
5: 2009 942671 200909 NA NA NA
---
1640: 2015 266734 201504 NA NA NA
1641: 2015 343874 201511 0 0 0
1642: 2015 798472 201507 NA NA NA
1643: 2015 720080 201505 NA NA NA
1644: 2015 127519 201511 0 0 1
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: 0 0 NA 3 1 0
2: 0 0 NA 2 1 0
3: 0 0 NA 3 1 0
4: NA NA NA 3 1 0
5: NA NA NA 3 1 0
---
1640: NA NA NA 1 2 2
1641: 1 0 0 2 2 0
1642: NA NA NA 3 2 0
1643: NA 1 NA 2 2 1
1644: 0 0 0 3 2 4
HGHT WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL
1: 144 61 90 29.4 0.7 0.8 120 80 1 12.6 117 264
2: 162 51 63 19.4 0.8 1.0 120 80 1 13.8 96 169
3: 163 65 82 24.5 0.7 0.6 130 80 1 15.0 118 216
4: 152 51 70 22.1 0.8 0.9 101 62 1 13.1 90 199
5: 159 50 73 19.8 0.7 0.8 132 78 1 13.0 92 162
---
1640: 171 76 88 26.0 1.2 1.2 125 89 1 14.1 77 363
1641: 179 80 88 25.0 1.0 0.7 126 83 1 14.9 119 106
1642: 163 63 80 23.7 1.5 1.5 118 77 1 16.1 160 271
1643: 165 70 92 25.7 0.6 0.8 120 80 1 13.6 81 289
1644: 168 84 103 29.8 0.9 0.8 140 85 1 15.2 134 210
TG HDL LDL CRTN SGOT SGPT GGT GFR
1: 128 60 179 0.9 25 20 25 59
2: 92 70 80 0.9 18 15 28 74
3: 132 55 134 0.8 26 30 30 79
4: 100 65 114 0.9 18 14 11 61
5: 58 40 111 0.9 24 23 15 49
---
1640: 280 63 244 0.9 19 32 95 96
1641: 247 29 50 0.9 101 157 62 79
1642: 514 51 151 1.0 40 66 104 85
1643: 810 52 NA 1.0 37 33 76 86
1644: 298 56 94 1.1 55 49 66 66Exam data
data.frame
df <- read.csv("https://raw.githubusercontent.com/jinseob2kim/lecture-snuhlab/master/data/example_g1e.csv")
head(df) EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1 2009 562083 200909 0 0 1
2 2009 334536 200911 0 0 0
3 2009 911867 200903 0 0 0
4 2009 183321 200908 NA NA NA
5 2009 942671 200909 NA NA NA
6 2009 979358 200912 NA NA NA
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N HGHT
1 0 0 NA 3 1 0 144
2 0 0 NA 2 1 0 162
3 0 0 NA 3 1 0 163
4 NA NA NA 3 1 0 152
5 NA NA NA 3 1 0 159
6 NA NA NA 2 1 0 157
WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL TG HDL
1 61 90 29.4 0.7 0.8 120 80 1 12.6 117 264 128 60
2 51 63 19.4 0.8 1.0 120 80 1 13.8 96 169 92 70
3 65 82 24.5 0.7 0.6 130 80 1 15.0 118 216 132 55
4 51 70 22.1 0.8 0.9 101 62 1 13.1 90 199 100 65
5 50 73 19.8 0.7 0.8 132 78 1 13.0 92 162 58 40
6 55 73 22.3 1.5 1.5 110 70 1 11.9 100 192 109 53
LDL CRTN SGOT SGPT GGT GFR
1 179 0.9 25 20 25 59
2 80 0.9 18 15 28 74
3 134 0.8 26 30 30 79
4 114 0.9 18 14 11 61
5 111 0.9 24 23 15 49
6 117 0.7 15 12 14 83Exam data
data.table
dt <- fread("https://raw.githubusercontent.com/jinseob2kim/lecture-snuhlab/master/data/example_g1e.csv")
dt EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 562083 200909 0 0 1
2: 2009 334536 200911 0 0 0
3: 2009 911867 200903 0 0 0
4: 2009 183321 200908 NA NA NA
5: 2009 942671 200909 NA NA NA
---
1640: 2015 266734 201504 NA NA NA
1641: 2015 343874 201511 0 0 0
1642: 2015 798472 201507 NA NA NA
1643: 2015 720080 201505 NA NA NA
1644: 2015 127519 201511 0 0 1
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: 0 0 NA 3 1 0
2: 0 0 NA 2 1 0
3: 0 0 NA 3 1 0
4: NA NA NA 3 1 0
5: NA NA NA 3 1 0
---
1640: NA NA NA 1 2 2
1641: 1 0 0 2 2 0
1642: NA NA NA 3 2 0
1643: NA 1 NA 2 2 1
1644: 0 0 0 3 2 4
HGHT WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL
1: 144 61 90 29.4 0.7 0.8 120 80 1 12.6 117 264
2: 162 51 63 19.4 0.8 1.0 120 80 1 13.8 96 169
3: 163 65 82 24.5 0.7 0.6 130 80 1 15.0 118 216
4: 152 51 70 22.1 0.8 0.9 101 62 1 13.1 90 199
5: 159 50 73 19.8 0.7 0.8 132 78 1 13.0 92 162
---
1640: 171 76 88 26.0 1.2 1.2 125 89 1 14.1 77 363
1641: 179 80 88 25.0 1.0 0.7 126 83 1 14.9 119 106
1642: 163 63 80 23.7 1.5 1.5 118 77 1 16.1 160 271
1643: 165 70 92 25.7 0.6 0.8 120 80 1 13.6 81 289
1644: 168 84 103 29.8 0.9 0.8 140 85 1 15.2 134 210
TG HDL LDL CRTN SGOT SGPT GGT GFR
1: 128 60 179 0.9 25 20 25 59
2: 92 70 80 0.9 18 15 28 74
3: 132 55 134 0.8 26 30 30 79
4: 100 65 114 0.9 18 14 11 61
5: 58 40 111 0.9 24 23 15 49
---
1640: 280 63 244 0.9 19 32 95 96
1641: 247 29 50 0.9 101 157 62 79
1642: 514 51 151 1.0 40 66 104 85
1643: 810 52 NA 1.0 37 33 76 86
1644: 298 56 94 1.1 55 49 66 66Row Operation
첫 번째 열부터 다섯 번째 열까지 선택
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 562083 200909 0 0 1
2: 2009 334536 200911 0 0 0
3: 2009 911867 200903 0 0 0
4: 2009 183321 200908 NA NA NA
5: 2009 942671 200909 NA NA NA
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N HGHT
1: 0 0 NA 3 1 0 144
2: 0 0 NA 2 1 0 162
3: 0 0 NA 3 1 0 163
4: NA NA NA 3 1 0 152
5: NA NA NA 3 1 0 159
WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL TG HDL
1: 61 90 29.4 0.7 0.8 120 80 1 12.6 117 264 128 60
2: 51 63 19.4 0.8 1.0 120 80 1 13.8 96 169 92 70
3: 65 82 24.5 0.7 0.6 130 80 1 15.0 118 216 132 55
4: 51 70 22.1 0.8 0.9 101 62 1 13.1 90 199 100 65
5: 50 73 19.8 0.7 0.8 132 78 1 13.0 92 162 58 40
LDL CRTN SGOT SGPT GGT GFR
1: 179 0.9 25 20 25 59
2: 80 0.9 18 15 28 74
3: 134 0.8 26 30 30 79
4: 114 0.9 18 14 11 61
5: 111 0.9 24 23 15 49Row Operation
EXMD_BZ_YYYY가 2009년-2012년 사이이고 BMI가 25 이상인 행만 추출
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 562083 200909 0 0 1
2: 2009 318669 200904 NA NA NA
3: 2009 668438 200904 NA NA NA
4: 2009 560878 200903 NA NA NA
5: 2009 375694 200906 0 0 1
---
317: 2012 582044 201210 0 0 0
318: 2012 126561 201210 0 0 0
319: 2012 266734 201204 NA NA NA
320: 2012 942204 201209 0 0 0
321: 2012 637160 201209 0 0 0
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: 0 0 NA 3 1 0
2: NA NA NA 2 1 0
3: NA NA NA 3 1 0
4: NA NA NA 2 1 0
5: 1 1 NA 2 1 0
---
317: 0 0 0 3 3 2
318: 0 0 0 2 3 1
319: NA NA NA 1 3 1
320: 0 0 0 2 3 7
321: 0 0 0 3 3 3
HGHT WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL
1: 144 61 90 29.4 0.7 0.8 120 80 1 12.6 117 264
2: 155 66 78 27.5 0.8 0.6 95 58 1 13.6 101 294
3: 160 71 94 27.7 0.7 0.2 100 60 1 13.0 104 195
4: 144 58 93 28.0 1.0 1.0 110 60 1 13.2 74 178
5: 151 70 94 30.7 1.0 1.0 119 71 1 13.0 129 173
---
317: 158 69 90 27.6 1.2 1.2 132 98 1 16.1 84 166
318: 183 103 108 30.8 1.2 1.2 139 89 1 16.6 83 175
319: 170 78 90 27.0 1.0 1.0 134 86 1 15.5 93 300
320: 176 86 91 27.8 1.0 1.5 128 76 1 16.4 94 179
321: 175 95 101 31.0 0.9 0.7 115 69 1 15.4 100 214
TG HDL LDL CRTN SGOT SGPT GGT GFR
1: 128 60 179 0.9 25 20 25 59
2: 119 50 220 0.6 22 22 22 116
3: 123 63 107 0.7 27 22 43 79
4: 177 49 93 0.7 15 17 7 86
5: 100 58 95 1.0 14 10 12 64
---
317: 193 48 79 0.8 36 49 69 137
318: 264 44 78 0.9 40 74 68 98
319: 287 50 192 1.1 40 65 85 77
320: 158 47 100 0.9 48 48 95 98
321: 412 53 127 1.5 58 70 97 53Row Operation
HME_YYYYMM에 따라 오름차순으로 정렬
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 480569 200901 0 1 1
2: 2009 79250 200901 0 0 0
3: 2009 418137 200901 0 0 0
4: 2009 669498 200902 0 0 0
5: 2009 486441 200902 0 0 1
---
1640: 2015 284267 201512 NA NA NA
1641: 2015 606125 201512 NA NA NA
1642: 2015 356551 201512 0 0 1
1643: 2015 4263 201512 0 0 0
1644: 2015 887943 201512 NA NA NA
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: 0 0 NA 3 1 0
2: 0 0 NA 1 1 0
3: 0 0 NA NA 2 NA
4: 0 0 NA 2 2 1
5: 0 0 NA 1 3 4
---
1640: NA NA NA 3 2 1
1641: 1 NA NA 2 2 2
1642: 0 0 0 3 2 0
1643: 0 0 0 3 2 0
1644: NA NA NA 2 2 1
HGHT WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL
1: 154 58 84 24.5 0.1 0.8 140 70 1 10.4 84 242
2: 141 40 69 20.1 0.1 0.7 100 60 1 11.8 86 160
3: 176 64 80 20.7 0.7 0.6 100 60 1 16.8 75 137
4: 139 47 86 24.3 0.1 0.1 143 83 1 14.2 114 225
5: 174 86 86 28.4 1.0 1.2 160 100 1 16.4 84 144
---
1640: 174 69 82 22.8 1.2 1.5 119 73 1 15.3 97 205
1641: 171 87 98 29.8 0.8 1.5 130 88 1 15.3 134 235
1642: 166 73 89 26.5 1.0 1.0 139 77 1 13.4 110 223
1643: 174 67 79 22.1 1.5 1.2 115 70 1 13.6 86 217
1644: 173 81 89 27.1 1.5 1.5 120 80 1 15.1 65 197
TG HDL LDL CRTN SGOT SGPT GGT GFR
1: 134 53 162 1.1 15 10 10 37
2: 144 37 94 0.6 14 16 11 59
3: 54 48 78 0.9 17 15 17 105
4: 189 53 134 0.5 49 55 32 73
5: 180 44 64 1.1 42 65 174 104
---
1640: 123 72 108 0.8 23 8 32 112
1641: 144 48 158 1.0 24 23 40 78
1642: 198 58 125 0.7 22 27 20 102
1643: 38 71 138 1.0 18 18 28 80
1644: 345 34 94 0.8 20 37 90 105Row Operation
HME_YYYYMM은 오름차순으로, HGHT는 내림차순으로 정렬
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 418137 200901 0 0 0
2: 2009 480569 200901 0 1 1
3: 2009 79250 200901 0 0 0
4: 2009 486441 200902 0 0 1
5: 2009 26776 200902 NA NA NA
---
1640: 2015 979090 201512 0 0 0
1641: 2015 181909 201512 0 0 1
1642: 2015 875758 201512 NA NA NA
1643: 2015 992522 201512 0 0 0
1644: 2015 975124 201512 0 0 1
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: 0 0 NA NA 2 NA
2: 0 0 NA 3 1 0
3: 0 0 NA 1 1 0
4: 0 0 NA 1 3 4
5: NA NA NA 2 2 2
---
1640: 0 0 0 2 1 0
1641: 0 0 0 2 1 0
1642: NA NA NA 2 1 1
1643: 0 0 0 2 1 2
1644: 0 1 0 3 1 3
HGHT WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL
1: 176 64 80 20.7 0.7 0.6 100 60 1 16.8 75 137
2: 154 58 84 24.5 0.1 0.8 140 70 1 10.4 84 242
3: 141 40 69 20.1 0.1 0.7 100 60 1 11.8 86 160
4: 174 86 86 28.4 1.0 1.2 160 100 1 16.4 84 144
5: 172 78 86 26.4 0.8 1.0 118 73 1 15.6 86 189
---
1640: 153 58 75 24.8 1.0 1.5 140 95 1 13.3 94 201
1641: 151 70 94 30.7 0.7 0.5 147 78 1 11.2 97 163
1642: 151 51 79 22.4 0.8 1.0 105 78 1 12.9 90 188
1643: 149 40 62 18.0 0.7 0.5 116 67 1 9.2 84 180
1644: 149 49 68 22.1 0.5 0.3 144 84 1 13.2 85 200
TG HDL LDL CRTN SGOT SGPT GGT GFR
1: 54 48 78 0.9 17 15 17 105
2: 134 53 162 1.1 15 10 10 37
3: 144 37 94 0.6 14 16 11 59
4: 180 44 64 1.1 42 65 174 104
5: 62 59 117 0.9 19 16 44 111
---
1640: 109 69 110 0.9 20 17 21 71
1641: 105 63 79 0.6 22 18 13 101
1642: 47 51 127 0.6 20 17 13 112
1643: 81 105 59 0.7 27 19 29 95
1644: 154 66 100 0.8 25 15 18 75Row Operation
EXMD_BZ_YYYY가 2009년-2012년 사이이고 BMI가 25 이상인 행만 추출한 후
HGHT에 따라 오름차순으로 정렬
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 562083 200909 0 0 1
2: 2009 560878 200903 NA NA NA
3: 2011 562083 201111 0 0 1
4: 2011 519824 201109 NA NA NA
5: 2011 914987 201103 0 0 1
---
317: 2011 550255 201104 0 0 0
318: 2009 115809 200905 0 0 0
319: 2010 115809 201006 0 0 0
320: 2011 115809 201109 0 0 0
321: 2012 115809 201209 0 0 0
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: 0 0 NA 3 1 0
2: NA NA NA 2 1 0
3: 0 0 0 2 1 0
4: NA NA NA 2 1 0
5: 0 0 0 3 1 2
---
317: 0 0 0 2 3 1
318: 0 0 NA 3 3 2
319: 0 0 0 3 3 1
320: 0 0 0 3 3 1
321: 0 0 0 3 3 1
HGHT WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL
1: 144 61 90 29.4 0.7 0.8 120 80 1 12.6 117 264
2: 144 58 93 28.0 1.0 1.0 110 60 1 13.2 74 178
3: 144 59 88 28.5 0.6 0.7 148 81 1 12.0 109 242
4: 145 58 79 27.6 0.8 0.5 144 91 3 13.9 107 300
5: 145 70 95 33.3 0.5 0.5 130 69 1 8.0 107 183
---
317: 184 94 94 27.8 0.9 0.7 140 100 1 16.0 100 277
318: 186 110 111 31.8 0.9 1.0 125 90 1 13.2 109 202
319: 186 114 111 33.0 0.8 0.9 130 80 1 14.6 90 194
320: 188 114 104 32.3 0.7 1.0 139 83 1 14.9 86 189
321: 188 111 107 31.4 0.6 0.9 130 82 1 14.9 93 172
TG HDL LDL CRTN SGOT SGPT GGT GFR
1: 128 60 179 0.9 25 20 25 59
2: 177 49 93 0.7 15 17 7 86
3: 178 67 139 0.9 30 34 28 NA
4: 427 43 NA 0.5 31 32 36 NA
5: 104 54 108 0.9 22 17 33 NA
---
317: 285 51 188 1.1 16 8 58 NA
318: 150 52 120 1.1 39 18 34 147
319: 297 32 103 1.0 22 13 32 NA
320: 151 46 113 0.9 31 20 36 NA
321: 63 49 110 0.9 33 17 38 100Column Operation
첫 번째 열부터 다섯 번째 열까지 추출
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ
1: 2009 562083 200909 0 0
2: 2009 334536 200911 0 0
3: 2009 911867 200903 0 0
4: 2009 183321 200908 NA NA
5: 2009 942671 200909 NA NA
---
1640: 2015 266734 201504 NA NA
1641: 2015 343874 201511 0 0
1642: 2015 798472 201507 NA NA
1643: 2015 720080 201505 NA NA
1644: 2015 127519 201511 0 0Column Operation
HGHT 열과 WGHT 열만 추출
HGHT WGHT
1: 144 61
2: 162 51
3: 163 65
4: 152 51
5: 159 50
---
1640: 171 76
1641: 179 80
1642: 163 63
1643: 165 70
1644: 168 84Column Operation
HGHT 열을 Height로, WGHT 열을 Weight로 이름을 바꿔서 추출
Column Operation
data.table 형식으로 추출
HGHT
1: 144
2: 162
3: 163
4: 152
5: 159
---
1640: 171
1641: 179
1642: 163
1643: 165
1644: 168Column Operation
vector 형식으로 추출
[1] 144 162 163 152 159 157 160 159 156 146 164 154 155 155 165 180 149 160
[19] 162 154 144 155 151 158 165 160 154 177 156 145 156 165 172 148 148 158
[37] 158 162 168 164 158 169 160 157 173 163 151 156 154 141 160 163 170 149
[55] 144 145 163 154 160 169 170 151 152 175 160 157 139 163 148 166 165 150
[73] 157 150 161 158 171 166 165 166 165 166 169 156 170 171 179 159 147 159
[91] 173 162 150 157 159 175 161 172 159 167 176 170 167 166 165 178 169 172
[109] 161 164 166 150 158 165 159 155 170 154 164 170 160 173 159 150 151 164
[127] 162 178 176 165 169 163 181 180 170 180 186 167 175 169 176 172 167 180
[145] 160 171 170 159 182 181 172 160 172 165 173 165 180 184 163 165 170 162
[163] 160 176 168 170 176 171 161 173 171 172 174 173 165 173 170 150 166 169
[181] 162 163 167 172 174 172 164 166 166 166 174 176 161 164 159 165 161 167
[199] 179 164 172 176 164 174 159 174 169 167 170 176 163 159 175 165 172 160
[217] 170 156 157 151 160 157 164 162 156 166 166 162 147 163 160 163 168 155
[235] 172 159 163 151 157 153 154 164 160 176 166 173 164 164 171 166 140 139
[253] 156 178 150 170 155 166 163 159 168 157 166 151 160 145 150 168 160 158
[271] 166 147 164 158 165 151 155 156 159 155 161 159 180 152 167 172 148 161
[289] 171 156 160 165 166 163 154 164 172 161 149 160 164 178 164 164 160 170
[307] 172 150 159 167 159 158 160 165 158 159 164 160 170 153 169 153 162 151
[325] 164 170 165 157 150 175 157 160 162 159 167 160 152 169 177 160 155 169
[343] 157 167 162 155 172 172 165 171 177 170 160 173 164 171 182 159 180 176
[361] 174 168 165 173 172 164 167 161 173 167 179 176 167 171 163 163 168 175
[379] 176 186 162 183 184 181 174 161 175 164 159 171 177 166 151 172 180 169
[397] 178 170 183 177 172 171 174 163 171 174 179 162 165 166 174 159 166 163
[415] 175 172 164 180 168 177 162 173 170 155 171 166 174 179 163 153 169 177
[433] 168 168 172 172 175 167 171 172 167 162 166 174 154 144 168 173 163 181
[451] 144 169 151 165 161 146 160 156 159 160 150 172 156 152 153 139 154 166
[469] 154 170 154 152 150 171 153 162 159 157 155 152 147 160 168 169 158 156
[487] 178 168 157 153 152 159 163 163 156 161 163 151 152 152 134 178 160 157
[505] 155 155 155 164 168 176 168 164 160 160 154 145 144 157 156 160 145 167
[523] 157 157 159 157 146 165 150 154 167 159 164 161 155 155 179 158 149 157
[541] 163 163 164 166 163 160 165 163 151 167 155 171 165 172 157 158 170 158
[559] 169 157 171 169 145 159 156 158 175 146 155 154 169 170 149 154 167 170
[577] 165 166 166 172 158 164 166 179 170 174 164 170 176 160 156 162 164 170
[595] 175 168 172 167 166 171 178 168 175 178 175 166 174 174 165 169 164 171
[613] 171 168 165 169 170 179 173 172 166 163 176 171 175 157 168 161 181 185
[631] 171 179 165 164 179 182 169 170 169 153 174 173 172 172 169 174 171 173
[649] 188 163 170 177 176 170 174 180 172 173 180 176 161 167 177 178 165 170
[667] 182 162 172 173 184 163 182 145 159 163 159 147 151 153 172 140 176 183
[685] 158 161 158 174 159 161 146 168 151 156 170 166 160 162 149 150 169 155
[703] 163 167 161 160 158 156 163 149 157 157 164 154 155 160 145 153 158 162
[721] 170 167 156 164 174 156 158 151 162 160 165 166 175 148 166 158 169 168
[739] 156 177 152 164 164 163 147 166 160 153 153 144 155 158 151 162 163 159
[757] 174 166 148 162 156 156 163 175 167 177 161 163 159 161 158 155 161 155
[775] 169 165 164 166 148 161 178 149 160 154 158 150 172 177 160 169 160 164
[793] 160 173 157 159 173 164 161 180 169 167 169 160 176 170 173 163 170 164
[811] 165 156 160 177 168 170 170 175 145 171 169 172 174 177 160 170 167 167
[829] 166 172 172 162 172 180 165 169 172 179 172 169 167 160 175 172 167 163
[847] 165 166 172 163 164 156 163 178 179 181 167 176 176 166 171 180 170 176
[865] 151 157 161 171 183 172 177 183 174 181 180 165 177 174 179 170 181 182
[883] 178 178 162 175 188 172 174 172 165 162 163 161 170 170 158 183 161 170
[901] 159 176 162 166 172 173 175 159 159 158 165 149 156 170 166 164 150 158
[919] 152 153 158 162 153 167 178 159 147 160 168 148 150 169 154 146 139 146
[937] 156 154 159 158 162 162 164 150 148 164 143 156 157 155 171 158 157 156
[955] 169 160 174 153 161 153 157 169 154 163 164 169 153 159 152 155 162 178
[973] 163 170 162 155 156 158 155 154 164 168 165 159 160 174 161 164 164 174
[991] 166 161 155 165 163 180 156 151 156 151 160 167 160 180 157 158 163 166
[1009] 168 160 157 145 156 160 165 155 171 161 153 159 175 157 178 163 160 165
[1027] 171 149 170 160 160 163 152 173 156 164 176 162 150 159 169 168 160 166
[1045] 177 179 183 165 169 168 166 166 180 178 171 164 183 174 158 168 172 169
[1063] 174 169 167 174 171 173 169 179 169 178 171 162 169 167 173 172 167 173
[1081] 165 174 172 181 163 169 164 160 159 183 175 168 174 165 173 171 172 171
[1099] 181 180 160 177 177 165 167 181 183 173 170 162 162 171 171 177 182 169
[1117] 170 172 172 170 170 164 164 179 175 176 175 167 172 169 168 165 186 171
[1135] 166 172 166 172 172 162 157 176 166 162 175 175 159 162 170 167 159 156
[1153] 160 151 154 159 154 147 163 162 172 151 165 144 162 151 152 161 150 167
[1171] 157 158 157 155 157 158 165 153 160 168 159 164 149 163 149 151 158 155
[1189] 165 146 168 164 140 148 157 156 167 136 162 156 157 159 154 159 163 156
[1207] 168 161 162 158 149 150 155 172 170 162 160 152 160 167 165 160 155 153
[1225] 153 167 162 167 163 152 168 164 165 156 169 160 159 154 158 163 170 164
[1243] 149 159 169 161 163 157 164 153 167 177 163 164 153 161 160 163 168 160
[1261] 167 156 164 177 178 165 166 160 154 158 148 180 170 145 171 176 147 155
[1279] 153 155 165 151 164 169 175 156 149 178 177 169 149 156 161 152 175 172
[1297] 168 146 179 168 159 162 160 170 158 159 159 168 180 162 169 166 158 171
[1315] 165 173 169 169 164 174 177 166 166 180 172 166 163 155 173 170 175 165
[1333] 165 175 174 174 174 177 179 170 169 172 162 163 162 173 177 160 185 169
[1351] 172 176 176 163 180 176 175 162 168 149 173 171 172 166 176 171 168 177
[1369] 181 160 172 171 179 172 183 178 169 165 183 168 176 162 174 181 158 175
[1387] 175 164 162 180 180 178 180 174 176 162 173 162 173 170 184 179 176 171
[1405] 161 155 163 153 162 162 151 153 161 141 178 153 163 157 154 151 154 159
[1423] 151 166 168 152 145 159 159 145 164 154 159 160 153 153 161 158 169 157
[1441] 162 155 164 162 163 158 160 157 161 152 160 164 170 164 158 155 153 170
[1459] 153 161 155 159 163 168 148 158 156 179 159 156 162 174 167 138 169 169
[1477] 145 181 166 152 158 160 159 178 163 150 168 161 144 169 171 159 153 172
[1495] 165 166 168 165 167 157 152 149 151 156 177 166 156 151 154 164 165 160
[1513] 163 162 170 178 163 165 163 181 158 164 162 156 166 169 159 145 167 163
[1531] 161 160 172 158 164 149 169 172 175 149 166 159 149 166 155 138 160 167
[1549] 180 144 158 174 165 155 162 179 176 176 178 172 181 165 182 161 169 182
[1567] 168 172 177 185 174 172 174 169 160 177 179 171 175 180 179 164 158 170
[1585] 175 176 161 183 169 178 168 173 176 171 173 172 182 171 174 173 173 164
[1603] 173 171 167 170 173 178 165 175 153 168 170 160 157 162 174 173 182 161
[1621] 163 172 166 167 174 163 171 170 160 172 167 166 174 181 175 170 171 180
[1639] 173 171 179 163 165 168Column Operation
변수로 열 이름 선택
[1] "Q_PHX_DX_STK" "Q_PHX_DX_HTDZ" "Q_PHX_DX_HTN" "Q_PHX_DX_DM"
[5] "Q_PHX_DX_DLD" "Q_PHX_DX_PTB" "Q_HBV_AG" "Q_SMK_YN"
[9] "Q_DRK_FRQ_V09N" Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN Q_PHX_DX_DM Q_PHX_DX_DLD
1: 0 0 1 0 0
2: 0 0 0 0 0
3: 0 0 0 0 0
4: NA NA NA NA NA
5: NA NA NA NA NA
---
1640: NA NA NA NA NA
1641: 0 0 0 1 0
1642: NA NA NA NA NA
1643: NA NA NA NA 1
1644: 0 0 1 0 0
Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: NA 3 1 0
2: NA 2 1 0
3: NA 3 1 0
4: NA 3 1 0
5: NA 3 1 0
---
1640: NA 1 2 2
1641: 0 2 2 0
1642: NA 3 2 0
1643: NA 2 2 1
1644: 0 3 2 4Column Operation
.SD: Subset of Data
Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN Q_PHX_DX_DM Q_PHX_DX_DLD
1: 0 0 1 0 0
2: 0 0 0 0 0
3: 0 0 0 0 0
4: NA NA NA NA NA
5: NA NA NA NA NA
---
1640: NA NA NA NA NA
1641: 0 0 0 1 0
1642: NA NA NA NA NA
1643: NA NA NA NA 1
1644: 0 0 1 0 0
Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: NA 3 1 0
2: NA 2 1 0
3: NA 3 1 0
4: NA 3 1 0
5: NA 3 1 0
---
1640: NA 1 2 2
1641: 0 2 2 0
1642: NA 3 2 0
1643: NA 2 2 1
1644: 0 3 2 4Column Operation
EXMD_BZ_YYYY가 2009년-2012년 사이이고 BMI가 25 이상인 행 중 colvars 열만 추출
Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN Q_PHX_DX_DM Q_PHX_DX_DLD
1: 0 0 1 0 0
2: NA NA NA NA NA
3: NA NA NA NA NA
4: NA NA NA NA NA
5: 0 0 1 1 1
---
317: 0 0 0 0 0
318: 0 0 0 0 0
319: NA NA NA NA NA
320: 0 0 0 0 0
321: 0 0 0 0 0
Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: NA 3 1 0
2: NA 2 1 0
3: NA 3 1 0
4: NA 2 1 0
5: NA 2 1 0
---
317: 0 3 3 2
318: 0 2 3 1
319: NA 1 3 1
320: 0 2 3 7
321: 0 3 3 3Column Operation
colvars 열 제외
EXMD_BZ_YYYY RN_INDI HME_YYYYMM HGHT WGHT WSTC BMI VA_LT VA_RT BP_SYS
1: 2009 562083 200909 144 61 90 29.4 0.7 0.8 120
2: 2009 334536 200911 162 51 63 19.4 0.8 1.0 120
3: 2009 911867 200903 163 65 82 24.5 0.7 0.6 130
4: 2009 183321 200908 152 51 70 22.1 0.8 0.9 101
5: 2009 942671 200909 159 50 73 19.8 0.7 0.8 132
---
1640: 2015 266734 201504 171 76 88 26.0 1.2 1.2 125
1641: 2015 343874 201511 179 80 88 25.0 1.0 0.7 126
1642: 2015 798472 201507 163 63 80 23.7 1.5 1.5 118
1643: 2015 720080 201505 165 70 92 25.7 0.6 0.8 120
1644: 2015 127519 201511 168 84 103 29.8 0.9 0.8 140
BP_DIA URN_PROT HGB FBS TOT_CHOL TG HDL LDL CRTN SGOT SGPT GGT GFR
1: 80 1 12.6 117 264 128 60 179 0.9 25 20 25 59
2: 80 1 13.8 96 169 92 70 80 0.9 18 15 28 74
3: 80 1 15.0 118 216 132 55 134 0.8 26 30 30 79
4: 62 1 13.1 90 199 100 65 114 0.9 18 14 11 61
5: 78 1 13.0 92 162 58 40 111 0.9 24 23 15 49
---
1640: 89 1 14.1 77 363 280 63 244 0.9 19 32 95 96
1641: 83 1 14.9 119 106 247 29 50 0.9 101 157 62 79
1642: 77 1 16.1 160 271 514 51 151 1.0 40 66 104 85
1643: 80 1 13.6 81 289 810 52 NA 1.0 37 33 76 86
1644: 85 1 15.2 134 210 298 56 94 1.1 55 49 66 66Column Summary
HGHT의 평균, WGHT의 평균, BMI의 평균
Column Summary
HGHT의 평균, WGHT의 평균, BMI의 평균을 이름 지정해서 출력
Column Summary
lapply로 HGHT, WGHT, BMI에 한번에 mean 함수 적용
By Operation
EXMD_BZ_YYYY으로 그룹화하여 HGHT의 평균, WGHT의 평균, BMI의 평균 구하기
EXMD_BZ_YYYY HGHT WGHT BMI
1: 2009 164.0841 64.32710 23.76402
2: 2010 164.9280 65.13983 23.82712
3: 2011 164.1480 64.89686 23.96009
4: 2012 164.9188 65.82051 24.08932
5: 2013 164.9095 64.90535 23.75391
6: 2014 164.3189 64.47244 23.78031
7: 2015 164.4792 66.07500 24.28167By Operation
HGHT가 175 이상인 데이터를 EXMD_BZ_YYYY, Q_SMK_YN으로 그룹화하여 개수 구함
.N: length()
EXMD_BZ_YYYY Q_SMK_YN N
1: 2009 1 7
2: 2009 NA 1
3: 2009 3 14
4: 2009 2 5
5: 2010 1 6
6: 2010 3 19
7: 2010 2 7
8: 2011 1 7
9: 2011 2 8
10: 2011 3 16
11: 2012 1 12
12: 2012 2 6
13: 2012 3 21
14: 2013 1 10
15: 2013 3 16
16: 2013 2 8
17: 2014 1 10
18: 2014 2 7
19: 2014 3 26
20: 2015 1 12
21: 2015 3 18
22: 2015 2 6
EXMD_BZ_YYYY Q_SMK_YN NBy Operation
keyby를 통해 정렬할 수 있음
EXMD_BZ_YYYY Q_SMK_YN N
1: 2009 NA 1
2: 2009 1 7
3: 2009 2 5
4: 2009 3 14
5: 2010 1 6
6: 2010 2 7
7: 2010 3 19
8: 2011 1 7
9: 2011 2 8
10: 2011 3 16
11: 2012 1 12
12: 2012 2 6
13: 2012 3 21
14: 2013 1 10
15: 2013 2 8
16: 2013 3 16
17: 2014 1 10
18: 2014 2 7
19: 2014 3 26
20: 2015 1 12
21: 2015 2 6
22: 2015 3 18
EXMD_BZ_YYYY Q_SMK_YN NBy Operation
조건으로 그룹화할 수도 있음
By Operation
조건으로 그룹화할 수도 있음
By Operation
조건으로 그룹화할 수도 있음
Merge
예시 데이터
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 562083 200909 0 0 1
2: 2009 334536 200911 0 0 0
3: 2009 911867 200903 0 0 0
4: 2009 183321 200908 NA NA NA
5: 2009 942671 200909 NA NA NA
6: 2009 979358 200912 NA NA NA
7: 2009 554112 200911 NA NA NA
8: 2009 487160 200908 NA NA NA
9: 2009 793017 200906 NA NA NA
10: 2009 219397 200912 0 0 1
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: 0 0 NA 3 1 0
2: 0 0 NA 2 1 0
3: 0 0 NA 3 1 0
4: NA NA NA 3 1 0
5: NA NA NA 3 1 0
6: NA NA NA 2 1 0
7: NA NA NA 2 1 0
8: NA NA NA 3 1 0
9: NA NA NA 3 1 0
10: 0 0 NA 3 1 0 EXMD_BZ_YYYY RN_INDI HME_YYYYMM HGHT WGHT WSTC BMI VA_LT VA_RT BP_SYS
1: 2009 979358 200912 157 55 73 22.3 1.5 1.5 110
2: 2009 554112 200911 160 56 67 21.9 1.5 1.5 119
3: 2009 487160 200908 159 54 66 21.4 1.2 1.5 111
4: 2009 793017 200906 156 53 67 21.8 1.2 1.0 138
5: 2009 219397 200912 146 48 78 22.5 1.5 1.5 138
6: 2009 831349 200912 164 66 85 24.5 1.2 1.0 130
7: 2009 480569 200901 154 58 84 24.5 0.1 0.8 140
8: 2009 559370 200912 155 51 75 21.2 1.0 1.0 93
9: 2009 318669 200904 155 66 78 27.5 0.8 0.6 95
10: 2009 395781 200907 165 60 71 22.0 0.6 0.4 120
BP_DIA URN_PROT HGB FBS TOT_CHOL TG HDL LDL CRTN SGOT SGPT GGT GFR
1: 70 1 11.9 100 192 109 53 117 0.7 15 12 14 83
2: 78 1 11.2 84 152 38 43 101 0.8 8 6 10 97
3: 60 1 12.2 88 166 42 58 99 1.0 16 11 12 65
4: 72 1 11.0 74 155 86 52 85 0.6 15 13 13 96
5: 84 1 12.8 107 178 87 35 125 0.7 21 21 23 70
6: 90 1 16.3 108 209 57 59 138 0.8 32 38 16 98
7: 70 1 10.4 84 242 134 53 162 1.1 15 10 10 37
8: 53 1 11.1 92 212 44 69 134 1.0 20 10 10 59
9: 58 1 13.6 101 294 119 50 220 0.6 22 22 22 116
10: 70 1 15.3 85 237 112 56 158 1.0 24 20 18 70Merge
Merge
Full join
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 183321 200908 NA NA NA
2: 2009 219397 200912 0 0 1
3: 2009 318669 200904 NA NA NA
4: 2009 334536 200911 0 0 0
5: 2009 395781 200907 NA NA NA
6: 2009 480569 200901 NA NA NA
7: 2009 487160 200908 NA NA NA
8: 2009 554112 200911 NA NA NA
9: 2009 559370 200912 NA NA NA
10: 2009 562083 200909 0 0 1
11: 2009 793017 200906 NA NA NA
12: 2009 831349 200912 NA NA NA
13: 2009 911867 200903 0 0 0
14: 2009 942671 200909 NA NA NA
15: 2009 979358 200912 NA NA NA
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N HGHT
1: NA NA NA 3 1 0 NA
2: 0 0 NA 3 1 0 146
3: NA NA NA NA NA NA 155
4: 0 0 NA 2 1 0 NA
5: NA NA NA NA NA NA 165
6: NA NA NA NA NA NA 154
7: NA NA NA 3 1 0 159
8: NA NA NA 2 1 0 160
9: NA NA NA NA NA NA 155
10: 0 0 NA 3 1 0 NA
11: NA NA NA 3 1 0 156
12: NA NA NA NA NA NA 164
13: 0 0 NA 3 1 0 NA
14: NA NA NA 3 1 0 NA
15: NA NA NA 2 1 0 157
WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL TG HDL
1: NA NA NA NA NA NA NA NA NA NA NA NA NA
2: 48 78 22.5 1.5 1.5 138 84 1 12.8 107 178 87 35
3: 66 78 27.5 0.8 0.6 95 58 1 13.6 101 294 119 50
4: NA NA NA NA NA NA NA NA NA NA NA NA NA
5: 60 71 22.0 0.6 0.4 120 70 1 15.3 85 237 112 56
6: 58 84 24.5 0.1 0.8 140 70 1 10.4 84 242 134 53
7: 54 66 21.4 1.2 1.5 111 60 1 12.2 88 166 42 58
8: 56 67 21.9 1.5 1.5 119 78 1 11.2 84 152 38 43
9: 51 75 21.2 1.0 1.0 93 53 1 11.1 92 212 44 69
10: NA NA NA NA NA NA NA NA NA NA NA NA NA
11: 53 67 21.8 1.2 1.0 138 72 1 11.0 74 155 86 52
12: 66 85 24.5 1.2 1.0 130 90 1 16.3 108 209 57 59
13: NA NA NA NA NA NA NA NA NA NA NA NA NA
14: NA NA NA NA NA NA NA NA NA NA NA NA NA
15: 55 73 22.3 1.5 1.5 110 70 1 11.9 100 192 109 53
LDL CRTN SGOT SGPT GGT GFR
1: NA NA NA NA NA NA
2: 125 0.7 21 21 23 70
3: 220 0.6 22 22 22 116
4: NA NA NA NA NA NA
5: 158 1.0 24 20 18 70
6: 162 1.1 15 10 10 37
7: 99 1.0 16 11 12 65
8: 101 0.8 8 6 10 97
9: 134 1.0 20 10 10 59
10: NA NA NA NA NA NA
11: 85 0.6 15 13 13 96
12: 138 0.8 32 38 16 98
13: NA NA NA NA NA NA
14: NA NA NA NA NA NA
15: 117 0.7 15 12 14 83Merge
Inner join
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 219397 200912 0 0 1
2: 2009 487160 200908 NA NA NA
3: 2009 554112 200911 NA NA NA
4: 2009 793017 200906 NA NA NA
5: 2009 979358 200912 NA NA NA
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N HGHT
1: 0 0 NA 3 1 0 146
2: NA NA NA 3 1 0 159
3: NA NA NA 2 1 0 160
4: NA NA NA 3 1 0 156
5: NA NA NA 2 1 0 157
WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL TG HDL
1: 48 78 22.5 1.5 1.5 138 84 1 12.8 107 178 87 35
2: 54 66 21.4 1.2 1.5 111 60 1 12.2 88 166 42 58
3: 56 67 21.9 1.5 1.5 119 78 1 11.2 84 152 38 43
4: 53 67 21.8 1.2 1.0 138 72 1 11.0 74 155 86 52
5: 55 73 22.3 1.5 1.5 110 70 1 11.9 100 192 109 53
LDL CRTN SGOT SGPT GGT GFR
1: 125 0.7 21 21 23 70
2: 99 1.0 16 11 12 65
3: 101 0.8 8 6 10 97
4: 85 0.6 15 13 13 96
5: 117 0.7 15 12 14 83Merge
Left join
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 183321 200908 NA NA NA
2: 2009 219397 200912 0 0 1
3: 2009 334536 200911 0 0 0
4: 2009 487160 200908 NA NA NA
5: 2009 554112 200911 NA NA NA
6: 2009 562083 200909 0 0 1
7: 2009 793017 200906 NA NA NA
8: 2009 911867 200903 0 0 0
9: 2009 942671 200909 NA NA NA
10: 2009 979358 200912 NA NA NA
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N HGHT
1: NA NA NA 3 1 0 NA
2: 0 0 NA 3 1 0 146
3: 0 0 NA 2 1 0 NA
4: NA NA NA 3 1 0 159
5: NA NA NA 2 1 0 160
6: 0 0 NA 3 1 0 NA
7: NA NA NA 3 1 0 156
8: 0 0 NA 3 1 0 NA
9: NA NA NA 3 1 0 NA
10: NA NA NA 2 1 0 157
WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL TG HDL
1: NA NA NA NA NA NA NA NA NA NA NA NA NA
2: 48 78 22.5 1.5 1.5 138 84 1 12.8 107 178 87 35
3: NA NA NA NA NA NA NA NA NA NA NA NA NA
4: 54 66 21.4 1.2 1.5 111 60 1 12.2 88 166 42 58
5: 56 67 21.9 1.5 1.5 119 78 1 11.2 84 152 38 43
6: NA NA NA NA NA NA NA NA NA NA NA NA NA
7: 53 67 21.8 1.2 1.0 138 72 1 11.0 74 155 86 52
8: NA NA NA NA NA NA NA NA NA NA NA NA NA
9: NA NA NA NA NA NA NA NA NA NA NA NA NA
10: 55 73 22.3 1.5 1.5 110 70 1 11.9 100 192 109 53
LDL CRTN SGOT SGPT GGT GFR
1: NA NA NA NA NA NA
2: 125 0.7 21 21 23 70
3: NA NA NA NA NA NA
4: 99 1.0 16 11 12 65
5: 101 0.8 8 6 10 97
6: NA NA NA NA NA NA
7: 85 0.6 15 13 13 96
8: NA NA NA NA NA NA
9: NA NA NA NA NA NA
10: 117 0.7 15 12 14 83Merge
Left join 다른 방법
EXMD_BZ_YYYY RN_INDI HME_YYYYMM HGHT WGHT WSTC BMI VA_LT VA_RT BP_SYS
1: 2009 562083 200909 NA NA NA NA NA NA NA
2: 2009 334536 200911 NA NA NA NA NA NA NA
3: 2009 911867 200903 NA NA NA NA NA NA NA
4: 2009 183321 200908 NA NA NA NA NA NA NA
5: 2009 942671 200909 NA NA NA NA NA NA NA
6: 2009 979358 200912 157 55 73 22.3 1.5 1.5 110
7: 2009 554112 200911 160 56 67 21.9 1.5 1.5 119
8: 2009 487160 200908 159 54 66 21.4 1.2 1.5 111
9: 2009 793017 200906 156 53 67 21.8 1.2 1.0 138
10: 2009 219397 200912 146 48 78 22.5 1.5 1.5 138
BP_DIA URN_PROT HGB FBS TOT_CHOL TG HDL LDL CRTN SGOT SGPT GGT GFR
1: NA NA NA NA NA NA NA NA NA NA NA NA NA
2: NA NA NA NA NA NA NA NA NA NA NA NA NA
3: NA NA NA NA NA NA NA NA NA NA NA NA NA
4: NA NA NA NA NA NA NA NA NA NA NA NA NA
5: NA NA NA NA NA NA NA NA NA NA NA NA NA
6: 70 1 11.9 100 192 109 53 117 0.7 15 12 14 83
7: 78 1 11.2 84 152 38 43 101 0.8 8 6 10 97
8: 60 1 12.2 88 166 42 58 99 1.0 16 11 12 65
9: 72 1 11.0 74 155 86 52 85 0.6 15 13 13 96
10: 84 1 12.8 107 178 87 35 125 0.7 21 21 23 70
Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN Q_PHX_DX_DM Q_PHX_DX_DLD
1: 0 0 1 0 0
2: 0 0 0 0 0
3: 0 0 0 0 0
4: NA NA NA NA NA
5: NA NA NA NA NA
6: NA NA NA NA NA
7: NA NA NA NA NA
8: NA NA NA NA NA
9: NA NA NA NA NA
10: 0 0 1 0 0
Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: NA 3 1 0
2: NA 2 1 0
3: NA 3 1 0
4: NA 3 1 0
5: NA 3 1 0
6: NA 2 1 0
7: NA 2 1 0
8: NA 3 1 0
9: NA 3 1 0
10: NA 3 1 0Merge
Right join
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 219397 200912 0 0 1
2: 2009 318669 200904 NA NA NA
3: 2009 395781 200907 NA NA NA
4: 2009 480569 200901 NA NA NA
5: 2009 487160 200908 NA NA NA
6: 2009 554112 200911 NA NA NA
7: 2009 559370 200912 NA NA NA
8: 2009 793017 200906 NA NA NA
9: 2009 831349 200912 NA NA NA
10: 2009 979358 200912 NA NA NA
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N HGHT
1: 0 0 NA 3 1 0 146
2: NA NA NA NA NA NA 155
3: NA NA NA NA NA NA 165
4: NA NA NA NA NA NA 154
5: NA NA NA 3 1 0 159
6: NA NA NA 2 1 0 160
7: NA NA NA NA NA NA 155
8: NA NA NA 3 1 0 156
9: NA NA NA NA NA NA 164
10: NA NA NA 2 1 0 157
WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL TG HDL
1: 48 78 22.5 1.5 1.5 138 84 1 12.8 107 178 87 35
2: 66 78 27.5 0.8 0.6 95 58 1 13.6 101 294 119 50
3: 60 71 22.0 0.6 0.4 120 70 1 15.3 85 237 112 56
4: 58 84 24.5 0.1 0.8 140 70 1 10.4 84 242 134 53
5: 54 66 21.4 1.2 1.5 111 60 1 12.2 88 166 42 58
6: 56 67 21.9 1.5 1.5 119 78 1 11.2 84 152 38 43
7: 51 75 21.2 1.0 1.0 93 53 1 11.1 92 212 44 69
8: 53 67 21.8 1.2 1.0 138 72 1 11.0 74 155 86 52
9: 66 85 24.5 1.2 1.0 130 90 1 16.3 108 209 57 59
10: 55 73 22.3 1.5 1.5 110 70 1 11.9 100 192 109 53
LDL CRTN SGOT SGPT GGT GFR
1: 125 0.7 21 21 23 70
2: 220 0.6 22 22 22 116
3: 158 1.0 24 20 18 70
4: 162 1.1 15 10 10 37
5: 99 1.0 16 11 12 65
6: 101 0.8 8 6 10 97
7: 134 1.0 20 10 10 59
8: 85 0.6 15 13 13 96
9: 138 0.8 32 38 16 98
10: 117 0.7 15 12 14 83Merge
Right join 다른 방법
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 979358 200912 NA NA NA
2: 2009 554112 200911 NA NA NA
3: 2009 487160 200908 NA NA NA
4: 2009 793017 200906 NA NA NA
5: 2009 219397 200912 0 0 1
6: 2009 831349 200912 NA NA NA
7: 2009 480569 200901 NA NA NA
8: 2009 559370 200912 NA NA NA
9: 2009 318669 200904 NA NA NA
10: 2009 395781 200907 NA NA NA
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N HGHT
1: NA NA NA 2 1 0 157
2: NA NA NA 2 1 0 160
3: NA NA NA 3 1 0 159
4: NA NA NA 3 1 0 156
5: 0 0 NA 3 1 0 146
6: NA NA NA NA NA NA 164
7: NA NA NA NA NA NA 154
8: NA NA NA NA NA NA 155
9: NA NA NA NA NA NA 155
10: NA NA NA NA NA NA 165
WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL TG HDL
1: 55 73 22.3 1.5 1.5 110 70 1 11.9 100 192 109 53
2: 56 67 21.9 1.5 1.5 119 78 1 11.2 84 152 38 43
3: 54 66 21.4 1.2 1.5 111 60 1 12.2 88 166 42 58
4: 53 67 21.8 1.2 1.0 138 72 1 11.0 74 155 86 52
5: 48 78 22.5 1.5 1.5 138 84 1 12.8 107 178 87 35
6: 66 85 24.5 1.2 1.0 130 90 1 16.3 108 209 57 59
7: 58 84 24.5 0.1 0.8 140 70 1 10.4 84 242 134 53
8: 51 75 21.2 1.0 1.0 93 53 1 11.1 92 212 44 69
9: 66 78 27.5 0.8 0.6 95 58 1 13.6 101 294 119 50
10: 60 71 22.0 0.6 0.4 120 70 1 15.3 85 237 112 56
LDL CRTN SGOT SGPT GGT GFR
1: 117 0.7 15 12 14 83
2: 101 0.8 8 6 10 97
3: 99 1.0 16 11 12 65
4: 85 0.6 15 13 13 96
5: 125 0.7 21 21 23 70
6: 138 0.8 32 38 16 98
7: 162 1.1 15 10 10 37
8: 134 1.0 20 10 10 59
9: 220 0.6 22 22 22 116
10: 158 1.0 24 20 18 70Merge
Left anti join
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 562083 200909 0 0 1
2: 2009 334536 200911 0 0 0
3: 2009 911867 200903 0 0 0
4: 2009 183321 200908 NA NA NA
5: 2009 942671 200909 NA NA NA
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: 0 0 NA 3 1 0
2: 0 0 NA 2 1 0
3: 0 0 NA 3 1 0
4: NA NA NA 3 1 0
5: NA NA NA 3 1 0Merge
Right anti join
EXMD_BZ_YYYY RN_INDI HME_YYYYMM HGHT WGHT WSTC BMI VA_LT VA_RT BP_SYS
1: 2009 831349 200912 164 66 85 24.5 1.2 1.0 130
2: 2009 480569 200901 154 58 84 24.5 0.1 0.8 140
3: 2009 559370 200912 155 51 75 21.2 1.0 1.0 93
4: 2009 318669 200904 155 66 78 27.5 0.8 0.6 95
5: 2009 395781 200907 165 60 71 22.0 0.6 0.4 120
BP_DIA URN_PROT HGB FBS TOT_CHOL TG HDL LDL CRTN SGOT SGPT GGT GFR
1: 90 1 16.3 108 209 57 59 138 0.8 32 38 16 98
2: 70 1 10.4 84 242 134 53 162 1.1 15 10 10 37
3: 53 1 11.1 92 212 44 69 134 1.0 20 10 10 59
4: 58 1 13.6 101 294 119 50 220 0.6 22 22 22 116
5: 70 1 15.3 85 237 112 56 158 1.0 24 20 18 70Mutate
새로운 변수 생성
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 562083 200909 0 0 1
2: 2009 334536 200911 0 0 0
3: 2009 911867 200903 0 0 0
4: 2009 183321 200908 NA NA NA
5: 2009 942671 200909 NA NA NA
---
1640: 2015 266734 201504 NA NA NA
1641: 2015 343874 201511 0 0 0
1642: 2015 798472 201507 NA NA NA
1643: 2015 720080 201505 NA NA NA
1644: 2015 127519 201511 0 0 1
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: 0 0 NA 3 1 0
2: 0 0 NA 2 1 0
3: 0 0 NA 3 1 0
4: NA NA NA 3 1 0
5: NA NA NA 3 1 0
---
1640: NA NA NA 1 2 2
1641: 1 0 0 2 2 0
1642: NA NA NA 3 2 0
1643: NA 1 NA 2 2 1
1644: 0 0 0 3 2 4
HGHT WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL
1: 144 61 90 29.4 0.7 0.8 120 80 1 12.6 117 264
2: 162 51 63 19.4 0.8 1.0 120 80 1 13.8 96 169
3: 163 65 82 24.5 0.7 0.6 130 80 1 15.0 118 216
4: 152 51 70 22.1 0.8 0.9 101 62 1 13.1 90 199
5: 159 50 73 19.8 0.7 0.8 132 78 1 13.0 92 162
---
1640: 171 76 88 26.0 1.2 1.2 125 89 1 14.1 77 363
1641: 179 80 88 25.0 1.0 0.7 126 83 1 14.9 119 106
1642: 163 63 80 23.7 1.5 1.5 118 77 1 16.1 160 271
1643: 165 70 92 25.7 0.6 0.8 120 80 1 13.6 81 289
1644: 168 84 103 29.8 0.9 0.8 140 85 1 15.2 134 210
TG HDL LDL CRTN SGOT SGPT GGT GFR BMI2
1: 128 60 179 0.9 25 20 25 59 29.4
2: 92 70 80 0.9 18 15 28 74 19.4
3: 132 55 134 0.8 26 30 30 79 24.5
4: 100 65 114 0.9 18 14 11 61 22.1
5: 58 40 111 0.9 24 23 15 49 19.8
---
1640: 280 63 244 0.9 19 32 95 96 26.0
1641: 247 29 50 0.9 101 157 62 79 25.0
1642: 514 51 151 1.0 40 66 104 85 23.7
1643: 810 52 NA 1.0 37 33 76 86 25.7
1644: 298 56 94 1.1 55 49 66 66 29.8Mutate
새로운 변수 생성
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 562083 200909 0 0 1
2: 2009 334536 200911 0 0 0
3: 2009 911867 200903 0 0 0
4: 2009 183321 200908 NA NA NA
5: 2009 942671 200909 NA NA NA
---
1640: 2015 266734 201504 NA NA NA
1641: 2015 343874 201511 0 0 0
1642: 2015 798472 201507 NA NA NA
1643: 2015 720080 201505 NA NA NA
1644: 2015 127519 201511 0 0 1
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: 0 0 NA 3 1 0
2: 0 0 NA 2 1 0
3: 0 0 NA 3 1 0
4: NA NA NA 3 1 0
5: NA NA NA 3 1 0
---
1640: NA NA NA 1 2 2
1641: 1 0 0 2 2 0
1642: NA NA NA 3 2 0
1643: NA 1 NA 2 2 1
1644: 0 0 0 3 2 4
HGHT WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL
1: 144 61 90 29.4 0.7 0.8 120 80 1 12.6 117 264
2: 162 51 63 19.4 0.8 1.0 120 80 1 13.8 96 169
3: 163 65 82 24.5 0.7 0.6 130 80 1 15.0 118 216
4: 152 51 70 22.1 0.8 0.9 101 62 1 13.1 90 199
5: 159 50 73 19.8 0.7 0.8 132 78 1 13.0 92 162
---
1640: 171 76 88 26.0 1.2 1.2 125 89 1 14.1 77 363
1641: 179 80 88 25.0 1.0 0.7 126 83 1 14.9 119 106
1642: 163 63 80 23.7 1.5 1.5 118 77 1 16.1 160 271
1643: 165 70 92 25.7 0.6 0.8 120 80 1 13.6 81 289
1644: 168 84 103 29.8 0.9 0.8 140 85 1 15.2 134 210
TG HDL LDL CRTN SGOT SGPT GGT GFR BMI2 BP_SYS140 BMI25
1: 128 60 179 0.9 25 20 25 59 29.4 0 1
2: 92 70 80 0.9 18 15 28 74 19.4 0 0
3: 132 55 134 0.8 26 30 30 79 24.5 0 0
4: 100 65 114 0.9 18 14 11 61 22.1 0 0
5: 58 40 111 0.9 24 23 15 49 19.8 0 0
---
1640: 280 63 244 0.9 19 32 95 96 26.0 0 1
1641: 247 29 50 0.9 101 157 62 79 25.0 0 1
1642: 514 51 151 1.0 40 66 104 85 23.7 0 0
1643: 810 52 NA 1.0 37 33 76 86 25.7 0 1
1644: 298 56 94 1.1 55 49 66 66 29.8 1 1Mutate
BMI2 열 삭제
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 562083 200909 0 0 1
2: 2009 334536 200911 0 0 0
3: 2009 911867 200903 0 0 0
4: 2009 183321 200908 NA NA NA
5: 2009 942671 200909 NA NA NA
---
1640: 2015 266734 201504 NA NA NA
1641: 2015 343874 201511 0 0 0
1642: 2015 798472 201507 NA NA NA
1643: 2015 720080 201505 NA NA NA
1644: 2015 127519 201511 0 0 1
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: 0 0 NA 3 1 0
2: 0 0 NA 2 1 0
3: 0 0 NA 3 1 0
4: NA NA NA 3 1 0
5: NA NA NA 3 1 0
---
1640: NA NA NA 1 2 2
1641: 1 0 0 2 2 0
1642: NA NA NA 3 2 0
1643: NA 1 NA 2 2 1
1644: 0 0 0 3 2 4
HGHT WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL
1: 144 61 90 29.4 0.7 0.8 120 80 1 12.6 117 264
2: 162 51 63 19.4 0.8 1.0 120 80 1 13.8 96 169
3: 163 65 82 24.5 0.7 0.6 130 80 1 15.0 118 216
4: 152 51 70 22.1 0.8 0.9 101 62 1 13.1 90 199
5: 159 50 73 19.8 0.7 0.8 132 78 1 13.0 92 162
---
1640: 171 76 88 26.0 1.2 1.2 125 89 1 14.1 77 363
1641: 179 80 88 25.0 1.0 0.7 126 83 1 14.9 119 106
1642: 163 63 80 23.7 1.5 1.5 118 77 1 16.1 160 271
1643: 165 70 92 25.7 0.6 0.8 120 80 1 13.6 81 289
1644: 168 84 103 29.8 0.9 0.8 140 85 1 15.2 134 210
TG HDL LDL CRTN SGOT SGPT GGT GFR BP_SYS140 BMI25
1: 128 60 179 0.9 25 20 25 59 0 1
2: 92 70 80 0.9 18 15 28 74 0 0
3: 132 55 134 0.8 26 30 30 79 0 0
4: 100 65 114 0.9 18 14 11 61 0 0
5: 58 40 111 0.9 24 23 15 49 0 0
---
1640: 280 63 244 0.9 19 32 95 96 0 1
1641: 247 29 50 0.9 101 157 62 79 0 1
1642: 514 51 151 1.0 40 66 104 85 0 0
1643: 810 52 NA 1.0 37 33 76 86 0 1
1644: 298 56 94 1.1 55 49 66 66 1 1Specific symbol
.SD: Subset of Data
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2009 562083 200909 0 0 1
2: 2009 334536 200911 0 0 0
3: 2009 911867 200903 0 0 0
4: 2009 183321 200908 NA NA NA
5: 2009 942671 200909 NA NA NA
---
1640: 2015 266734 201504 NA NA NA
1641: 2015 343874 201511 0 0 0
1642: 2015 798472 201507 NA NA NA
1643: 2015 720080 201505 NA NA NA
1644: 2015 127519 201511 0 0 1
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: 0 0 NA 3 1 0
2: 0 0 NA 2 1 0
3: 0 0 NA 3 1 0
4: NA NA NA 3 1 0
5: NA NA NA 3 1 0
---
1640: NA NA NA 1 2 2
1641: 1 0 0 2 2 0
1642: NA NA NA 3 2 0
1643: NA 1 NA 2 2 1
1644: 0 0 0 3 2 4
HGHT WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL
1: 144 61 90 29.4 0.7 0.8 120 80 1 12.6 117 264
2: 162 51 63 19.4 0.8 1.0 120 80 1 13.8 96 169
3: 163 65 82 24.5 0.7 0.6 130 80 1 15.0 118 216
4: 152 51 70 22.1 0.8 0.9 101 62 1 13.1 90 199
5: 159 50 73 19.8 0.7 0.8 132 78 1 13.0 92 162
---
1640: 171 76 88 26.0 1.2 1.2 125 89 1 14.1 77 363
1641: 179 80 88 25.0 1.0 0.7 126 83 1 14.9 119 106
1642: 163 63 80 23.7 1.5 1.5 118 77 1 16.1 160 271
1643: 165 70 92 25.7 0.6 0.8 120 80 1 13.6 81 289
1644: 168 84 103 29.8 0.9 0.8 140 85 1 15.2 134 210
TG HDL LDL CRTN SGOT SGPT GGT GFR BP_SYS140 BMI25
1: 128 60 179 0.9 25 20 25 59 0 1
2: 92 70 80 0.9 18 15 28 74 0 0
3: 132 55 134 0.8 26 30 30 79 0 0
4: 100 65 114 0.9 18 14 11 61 0 0
5: 58 40 111 0.9 24 23 15 49 0 0
---
1640: 280 63 244 0.9 19 32 95 96 0 1
1641: 247 29 50 0.9 101 157 62 79 0 1
1642: 514 51 151 1.0 40 66 104 85 0 0
1643: 810 52 NA 1.0 37 33 76 86 0 1
1644: 298 56 94 1.1 55 49 66 66 1 1Specific symbol
.SD: Subset of Data
EXMD_BZ_YYYY RN_INDI HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: integer integer integer integer integer integer
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: integer integer integer integer integer integer
HGHT WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT
1: integer integer integer numeric numeric numeric integer integer integer
HGB FBS TOT_CHOL TG HDL LDL CRTN SGOT SGPT
1: numeric integer integer integer integer integer numeric integer integer
GGT GFR BP_SYS140 BMI25
1: integer integer factor factorSpecific symbol
.SD: Subset of Data
RN_INDI EXMD_BZ_YYYY HME_YYYYMM Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN
1: 2270 2010 201012 0 0 0
2: 3690 2010 201005 0 0 0
3: 4263 2009 200910 NA NA NA
4: 4664 2009 200910 0 0 0
5: 5707 2010 201007 NA NA NA
---
543: 995838 2013 201312 0 0 0
544: 999693 2010 201003 0 0 0
545: 1005250 2012 201204 0 0 0
546: 1009573 2009 200904 0 0 0
547: 1010623 2010 201005 0 0 0
Q_PHX_DX_DM Q_PHX_DX_DLD Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: 0 0 0 2 1 2
2: 0 0 0 2 3 1
3: NA NA NA 2 2 1
4: 0 0 NA 2 1 0
5: NA NA NA 3 1 1
---
543: 0 0 0 2 1 0
544: 0 0 0 2 2 1
545: 0 0 0 3 3 1
546: 0 1 NA 2 2 2
547: 0 0 0 3 3 1
HGHT WGHT WSTC BMI VA_LT VA_RT BP_SYS BP_DIA URN_PROT HGB FBS TOT_CHOL
1: 161 58 68 22.4 2.0 1.5 119 72 1 14.1 102 220
2: 159 51 77 20.2 1.0 0.9 110 60 1 13.3 89 145
3: 175 66 78 21.6 1.5 2.0 110 70 1 13.5 79 264
4: 160 53 63 20.7 0.9 0.9 110 80 1 12.7 84 192
5: 160 50 67 19.5 0.7 1.0 98 51 1 13.1 83 182
---
543: 156 44 66 18.1 1.2 1.0 100 60 1 13.6 118 242
544: 167 70 92 25.1 1.0 1.2 127 79 1 14.8 97 289
545: 181 72 78 22.0 1.5 1.5 115 70 1 14.0 102 171
546: 170 74 88 25.6 1.2 1.2 110 70 1 13.8 70 185
547: 173 80 86 26.7 0.6 0.9 110 72 1 15.5 92 234
TG HDL LDL CRTN SGOT SGPT GGT GFR BP_SYS140 BMI25
1: 99 55 145 0.8 17 13 17 NA 0 0
2: 101 47 78 0.6 20 13 22 NA 0 0
3: 54 81 172 1.2 15 15 17 77 0 0
4: 74 57 120 0.9 17 9 9 70 0 0
5: 68 67 101 0.7 11 7 10 NA 0 0
---
543: 170 62 146 0.9 17 13 11 73 0 0
544: 685 45 NA 1.0 28 38 64 NA 0 1
545: 58 69 NA 1.2 21 18 19 80 0 0
546: 46 117 58 1.0 21 31 24 89 0 1
547: 427 52 NA 1.1 19 20 21 NA 0 1Specific symbol
.SDcols: 연산 대상이 되는 특정 열 지정
RN_INDI Q_PHX_DX_STK Q_PHX_DX_HTDZ Q_PHX_DX_HTN Q_PHX_DX_DM Q_PHX_DX_DLD
1: 2270 0 0 0 0 0
2: 3690 0 0 0 0 0
3: 4263 NA NA NA NA NA
4: 4664 0 0 0 0 0
5: 5707 NA NA NA NA NA
---
543: 995838 0 0 0 0 0
544: 999693 0 0 0 0 0
545: 1005250 0 0 0 0 0
546: 1009573 0 0 0 0 1
547: 1010623 0 0 0 0 0
Q_PHX_DX_PTB Q_HBV_AG Q_SMK_YN Q_DRK_FRQ_V09N
1: 0 2 1 2
2: 0 2 3 1
3: NA 2 2 1
4: NA 2 1 0
5: NA 3 1 1
---
543: 0 2 1 0
544: 0 2 2 1
545: 0 3 3 1
546: NA 2 2 2
547: 0 3 3 1Specific symbol
.N: length()
melt
melt
wide to long
dt.long1 <- melt(dt,
id.vars = c("EXMD_BZ_YYYY", "RN_INDI", "HME_YYYYMM"), # 고정할 열
measure.vars = c("TOT_CHOL", "TG", "HDL", "LDL"), # 재구조화할 열
variable.name = "Lipid", # 재구조화한 후 variable 열의 이름
value.name = "Value") # 재구조화한 후 value 열의 이름
dt.long1 EXMD_BZ_YYYY RN_INDI HME_YYYYMM Lipid Value
1: 2009 562083 200909 TOT_CHOL 264
2: 2009 334536 200911 TOT_CHOL 169
3: 2009 911867 200903 TOT_CHOL 216
4: 2009 183321 200908 TOT_CHOL 199
5: 2009 942671 200909 TOT_CHOL 162
---
6572: 2015 266734 201504 LDL 244
6573: 2015 343874 201511 LDL 50
6574: 2015 798472 201507 LDL 151
6575: 2015 720080 201505 LDL NA
6576: 2015 127519 201511 LDL 94melt
동시에 여러 개의 열로 melt 가능
col1 <- c("BP_SYS", "BP_DIA")
col2 <- c("VA_LT", "VA_RT")
dt.long2 <- melt(dt,
id.vars = c("EXMD_BZ_YYYY", "RN_INDI", "HME_YYYYMM"),
measure = list(col1, col2),
value.name = c("BP", "VA"))
dt.long2 EXMD_BZ_YYYY RN_INDI HME_YYYYMM variable BP VA
1: 2009 562083 200909 1 120 0.7
2: 2009 334536 200911 1 120 0.8
3: 2009 911867 200903 1 130 0.7
4: 2009 183321 200908 1 101 0.8
5: 2009 942671 200909 1 132 0.7
---
3284: 2015 266734 201504 2 89 1.2
3285: 2015 343874 201511 2 83 0.7
3286: 2015 798472 201507 2 77 1.5
3287: 2015 720080 201505 2 80 0.8
3288: 2015 127519 201511 2 85 0.8dcast
long to wide
dt.wide1 <- dcast(dt.long1, EXMD_BZ_YYYY + RN_INDI + HME_YYYYMM ~ Lipid, value.var = "Value")
dt.wide1 EXMD_BZ_YYYY RN_INDI HME_YYYYMM TOT_CHOL TG HDL LDL
1: 2009 4263 200910 264 54 81 172
2: 2009 4664 200910 192 74 57 120
3: 2009 9866 200912 112 116 48 40
4: 2009 17079 200911 161 52 72 78
5: 2009 26776 200902 189 62 59 117
---
1640: 2015 985608 201512 189 61 70 106
1641: 2015 992522 201512 180 81 105 59
1642: 2015 995240 201511 222 319 74 84
1643: 2015 1005250 201504 159 105 60 78
1644: 2015 1010623 201502 244 440 48 NAdcast
그룹별 요약 통계량을 계산한 결과를 재구조화하여 반환
dt.wide2 <- dcast(dt.long1, RN_INDI ~ Lipid, value.var = "Value", fun.aggregate = mean, na.rm =T)
dt.wide2 RN_INDI TOT_CHOL TG HDL LDL
1: 2270 205.5000 105.50000 58.00000 126.5000
2: 3690 145.0000 101.00000 47.00000 78.0000
3: 4263 243.4286 47.14286 75.71429 158.0000
4: 4664 180.5000 88.25000 52.50000 110.0000
5: 5707 209.0000 78.00000 68.50000 124.5000
---
543: 995838 243.5000 122.00000 64.00000 155.0000
544: 999693 268.5000 454.00000 42.50000 163.0000
545: 1005250 158.0000 65.00000 64.50000 77.0000
546: 1009573 229.6667 153.16667 52.83333 145.8333
547: 1010623 222.5000 351.00000 48.75000 104.5000dcast
여러 열을 동시에 dcast 가능
EXMD_BZ_YYYY RN_INDI HME_YYYYMM BP_1 BP_2 VA_1 VA_2
1: 2009 4263 200910 110 70 1.5 2.0
2: 2009 4664 200910 110 80 0.9 0.9
3: 2009 9866 200912 121 63 1.0 0.5
4: 2009 17079 200911 106 60 1.0 0.8
5: 2009 26776 200902 118 73 0.8 1.0
---
1640: 2015 985608 201512 117 70 1.0 1.0
1641: 2015 992522 201512 116 67 0.7 0.5
1642: 2015 995240 201511 130 80 1.5 1.5
1643: 2015 1005250 201504 110 75 1.2 1.5
1644: 2015 1010623 201502 123 85 0.8 0.8