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  • Convert daily sums to weekly sums

    Dear all,

    I have a sample of 130 countries. The sample consists of the daily number of new COVID-19 cases. I would like to convert the variable to report the weekly number (sum) of COVID-19 cases and the quarterly number (sum) of COVID-19 cases.

    Any advice on this is much appreciated. I am providing an example of the data set I am currently working with. For simplicity, I am only including 2 countries. Thank you.

    Code:
    * Example generated by -dataex-. For more info, type help dataex
    clear
    input str3 iso_code str10 date long new_cases
    "AFG" "2020-02-24"     5
    "AFG" "2020-02-25"     0
    "AFG" "2020-02-26"     0
    "AFG" "2020-02-27"     0
    "AFG" "2020-02-28"     0
    "AFG" "2020-02-29"     0
    "AFG" "2020-03-01"     0
    "AFG" "2020-03-02"     0
    "AFG" "2020-03-03"     0
    "AFG" "2020-03-04"     0
    "AFG" "2020-03-05"     0
    "AFG" "2020-03-06"     0
    "AFG" "2020-03-07"     3
    "AFG" "2020-03-08"     0
    "AFG" "2020-03-09"     0
    "AFG" "2020-03-10"     0
    "AFG" "2020-03-11"     3
    "AFG" "2020-03-12"     0
    "AFG" "2020-03-13"     0
    "AFG" "2020-03-14"     3
    "AFG" "2020-03-15"     6
    "AFG" "2020-03-16"     5
    "AFG" "2020-03-17"     1
    "AFG" "2020-03-18"     0
    "AFG" "2020-03-19"     0
    "AFG" "2020-03-20"     .
    "AFG" "2020-03-21"     0
    "AFG" "2020-03-22"    10
    "AFG" "2020-03-23"     6
    "AFG" "2020-03-24"     2
    "AFG" "2020-03-25"    32
    "AFG" "2020-03-26"     6
    "AFG" "2020-03-27"    11
    "AFG" "2020-03-28"    15
    "AFG" "2020-03-29"     8
    "AFG" "2020-03-30"     0
    "AFG" "2020-03-31"    52
    "AFG" "2020-04-01"    26
    "AFG" "2020-04-02"    43
    "AFG" "2020-04-03"    34
    "AFG" "2020-04-04"     1
    "AFG" "2020-04-05"    29
    "AFG" "2020-04-06"    38
    "AFG" "2020-04-07"    30
    "AFG" "2020-04-08"    56
    "AFG" "2020-04-09"    21
    "AFG" "2020-04-10"    77
    "AFG" "2020-04-11"     0
    "AFG" "2020-04-12"    34
    "AFG" "2020-04-13"    52
    "AFG" "2020-04-14"    58
    "AFG" "2020-04-15"   105
    "AFG" "2020-04-16"    24
    "AFG" "2020-04-17"    51
    "AFG" "2020-04-18"    63
    "AFG" "2020-04-19"    25
    "AFG" "2020-04-20"    63
    "AFG" "2020-04-21"    30
    "AFG" "2020-04-22"    66
    "AFG" "2020-04-23"    84
    "AFG" "2020-04-24"    50
    "AFG" "2020-04-25"   104
    "AFG" "2020-04-26"   133
    "AFG" "2020-04-27"    68
    "AFG" "2020-04-28"   172
    "AFG" "2020-04-29"   124
    "AFG" "2020-04-30"     0
    "AFG" "2020-05-01"   344
    "AFG" "2020-05-02"   298
    "AFG" "2020-05-03"     0
    "AFG" "2020-05-04"     0
    "AFG" "2020-05-05"     0
    "AFG" "2020-05-06"   755
    "AFG" "2020-05-07"   168
    "AFG" "2020-05-08"   171
    "AFG" "2020-05-09"     0
    "AFG" "2020-05-10"   839
    "AFG" "2020-05-11"   262
    "AFG" "2020-05-12"   303
    "AFG" "2020-05-13"     0
    "AFG" "2020-05-14"   372
    "AFG" "2020-05-15"   714
    "AFG" "2020-05-16"   349
    "AFG" "2020-05-17"   233
    "AFG" "2020-05-18"   437
    "AFG" "2020-05-19"   583
    "AFG" "2020-05-20"   490
    "AFG" "2020-05-21"   531
    "AFG" "2020-05-22"   540
    "AFG" "2020-05-23"   736
    "AFG" "2020-05-24"   716
    "AFG" "2020-05-25"   512
    "AFG" "2020-05-26"   737
    "AFG" "2020-05-27"   548
    "AFG" "2020-05-28"   637
    "AFG" "2020-05-29"   643
    "AFG" "2020-05-30"   784
    "AFG" "2020-05-31"   651
    "AFG" "2020-06-01"   656
    "AFG" "2020-06-02"   742
    "AFG" "2020-06-03"   775
    "AFG" "2020-06-04"   624
    "AFG" "2020-06-05"  1078
    "AFG" "2020-06-06"   582
    "AFG" "2020-06-07"   791
    "AFG" "2020-06-08"   575
    "AFG" "2020-06-09"   305
    "AFG" "2020-06-10"   920
    "AFG" "2020-06-11"   748
    "AFG" "2020-06-12"   656
    "AFG" "2020-06-13"   556
    "AFG" "2020-06-14"   664
    "AFG" "2020-06-15"   761
    "AFG" "2020-06-16"   106
    "AFG" "2020-06-17"  1241
    "AFG" "2020-06-18"   463
    "AFG" "2020-06-19"   541
    "AFG" "2020-06-20"   419
    "AFG" "2020-06-21"   536
    "AFG" "2020-06-22"   310
    "AFG" "2020-06-23"   338
    "AFG" "2020-06-24"   159
    "AFG" "2020-06-25"   535
    "AFG" "2020-06-26"    85
    "AFG" "2020-06-27"   356
    "AFG" "2020-06-28"   351
    "AFG" "2020-06-29"   271
    "AFG" "2020-06-30"   121
    "AFG" "2020-07-01"   403
    "AFG" "2020-07-02"   260
    "AFG" "2020-07-03"   302
    "AFG" "2020-07-04"   348
    "AFG" "2020-07-05"   279
    "AFG" "2020-07-06"   113
    "AFG" "2020-07-07"   320
    "AFG" "2020-07-08"   210
    "AFG" "2020-07-09"    59
    "AFG" "2020-07-10"   541
    "AFG" "2020-07-11"   157
    "AFG" "2020-07-12"   100
    "AFG" "2020-07-13"     4
    "AFG" "2020-07-14"   285
    "AFG" "2020-07-15"   200
    "AFG" "2020-07-16"   130
    "AFG" "2020-07-17"   159
    "AFG" "2020-07-18"    60
    "AFG" "2020-07-19"   186
    "AFG" "2020-07-20"    34
    "AFG" "2020-07-21"   106
    "AFG" "2020-07-22"   112
    "AFG" "2020-07-23"   188
    "AFG" "2020-07-24"    66
    "AFG" "2020-07-25"    55
    "AFG" "2020-07-26"   121
    "AFG" "2020-07-27"   106
    "AFG" "2020-07-28"   105
    "AFG" "2020-07-29"   103
    "AFG" "2020-07-30"    71
    "AFG" "2020-07-31"     0
    "AFG" "2020-08-01"   168
    "AFG" "2020-08-02"     0
    "AFG" "2020-08-03"     0
    "AFG" "2020-08-04"    37
    "AFG" "2020-08-05"    82
    "AFG" "2020-08-06"    67
    "AFG" "2020-08-07"    41
    "AFG" "2020-08-08"    78
    "AFG" "2020-08-09"    39
    "AFG" "2020-08-10"     0
    "AFG" "2020-08-11"   215
    "AFG" "2020-08-12"    76
    "AFG" "2020-08-13"    79
    "AFG" "2020-08-14"     7
    "AFG" "2020-08-15"   120
    "AFG" "2020-08-16"    45
    "AFG" "2020-08-17"     0
    "AFG" "2020-08-18"     3
    "AFG" "2020-08-19"     0
    "AFG" "2020-08-20"   160
    "AFG" "2020-08-21"    97
    "AFG" "2020-08-22"    38
    "AFG" "2020-08-23"    59
    "AFG" "2020-08-24"    46
    "AFG" "2020-08-25"    71
    "AFG" "2020-08-26"    43
    "AFG" "2020-08-27"    16
    "AFG" "2020-08-28"    11
    "AFG" "2020-08-29"     3
    "AFG" "2020-08-30"     0
    "AFG" "2020-08-31"    19
    "AFG" "2020-09-01"    34
    "AFG" "2020-09-02"    47
    "AFG" "2020-09-03"    45
    "AFG" "2020-09-04"     0
    "AFG" "2020-09-05"    16
    "AFG" "2020-09-06"    94
    "AFG" "2020-09-07"    96
    "AFG" "2020-09-08"    26
    "AFG" "2020-09-09"    24
    "AFG" "2020-09-10"    28
    "AFG" "2020-09-11"    34
    "AFG" "2020-09-12"    35
    "AFG" "2020-09-13"    75
    "AFG" "2020-09-14"    56
    "AFG" "2020-09-15"    43
    "AFG" "2020-09-16"    40
    "AFG" "2020-09-17"    17
    "AFG" "2020-09-18"    11
    "AFG" "2020-09-19"    36
    "AFG" "2020-09-20"   125
    "AFG" "2020-09-21"    30
    "AFG" "2020-09-22"    22
    "AFG" "2020-09-23"    49
    "AFG" "2020-09-24"    25
    "AFG" "2020-09-25"    16
    "AFG" "2020-09-26"     6
    "AFG" "2020-09-27"    35
    "AFG" "2020-09-28"    12
    "AFG" "2020-09-29"    15
    "AFG" "2020-09-30"    14
    "AFG" "2020-10-01"    17
    "AFG" "2020-10-02"     5
    "AFG" "2020-10-03"     7
    "AFG" "2020-10-04"    44
    "AFG" "2020-10-05"    81
    "AFG" "2020-10-06"    64
    "AFG" "2020-10-07"    62
    "AFG" "2020-10-08"    68
    "AFG" "2020-10-09"    77
    "AFG" "2020-10-10"    10
    "AFG" "2020-10-11"    96
    "AFG" "2020-10-12"    71
    "AFG" "2020-10-13"    58
    "AFG" "2020-10-14"    66
    "AFG" "2020-10-15"    32
    "AFG" "2020-10-16"    47
    "AFG" "2020-10-17"    68
    "AFG" "2020-10-18"    59
    "AFG" "2020-10-19"    87
    "AFG" "2020-10-20"    88
    "AFG" "2020-10-21"     0
    "AFG" "2020-10-22"    49
    "AFG" "2020-10-23"   116
    "AFG" "2020-10-24"    61
    "AFG" "2020-10-25"    81
    "AFG" "2020-10-26"    65
    "AFG" "2020-10-27"   104
    "AFG" "2020-10-28"    95
    "AFG" "2020-10-29"   113
    "AFG" "2020-10-30"   123
    "AFG" "2020-10-31"    66
    "AFG" "2020-11-01"    91
    "AFG" "2020-11-02"    76
    "AFG" "2020-11-03"   132
    "AFG" "2020-11-04"    95
    "AFG" "2020-11-05"    86
    "AFG" "2020-11-06"   121
    "AFG" "2020-11-07"    40
    "AFG" "2020-11-08"    58
    "AFG" "2020-11-09"   126
    "AFG" "2020-11-10"   138
    "AFG" "2020-11-11"   166
    "AFG" "2020-11-12"   146
    "AFG" "2020-11-13"   186
    "AFG" "2020-11-14"   174
    "AFG" "2020-11-15"    66
    "AFG" "2020-11-16"   205
    "AFG" "2020-11-17"   163
    "AFG" "2020-11-18"   225
    "AFG" "2020-11-19"   223
    "AFG" "2020-11-20"   377
    "AFG" "2020-11-21"   215
    "AFG" "2020-11-22"    60
    "AFG" "2020-11-23"   203
    "AFG" "2020-11-24"   282
    "AFG" "2020-11-25"   290
    "AFG" "2020-11-26"   212
    "AFG" "2020-11-27"   226
    "AFG" "2020-11-28"   123
    "AFG" "2020-11-29"   127
    "AFG" "2020-11-30"   249
    "AFG" "2020-12-01"   283
    "AFG" "2020-12-02"   219
    "AFG" "2020-12-03"   263
    "AFG" "2020-12-04"   278
    "AFG" "2020-12-05"   130
    "AFG" "2020-12-06"   253
    "AFG" "2020-12-07"   260
    "AFG" "2020-12-08"   235
    "AFG" "2020-12-09"   230
    "AFG" "2020-12-10"   174
    "AFG" "2020-12-11"   213
    "AFG" "2020-12-12"    73
    "AFG" "2020-12-13"   126
    "AFG" "2020-12-14"   321
    "AFG" "2020-12-15"   211
    "AFG" "2020-12-16"   219
    "AFG" "2020-12-17"   224
    "AFG" "2020-12-18"   275
    "AFG" "2020-12-19"   254
    "AFG" "2020-12-20"    80
    "AFG" "2020-12-21"   142
    "AFG" "2020-12-22"   210
    "AFG" "2020-12-23"   182
    "AFG" "2020-12-24"   287
    "AFG" "2020-12-25"   238
    "AFG" "2020-12-26"   169
    "AFG" "2020-12-27"    84
    "AFG" "2020-12-28"   159
    "AFG" "2020-12-29"   140
    "AFG" "2020-12-30"   183
    "AFG" "2020-12-31"     0
    "AFG" "2021-01-01"   183
    "AFG" "2021-01-02"    73
    "AFG" "2021-01-03"   123
    "AFG" "2021-01-04"   200
    "AFG" "2021-01-05"   102
    "AFG" "2021-01-06"    94
    "AFG" "2021-01-07"   102
    "AFG" "2021-01-08"   125
    "AFG" "2021-01-09"    68
    "AFG" "2021-01-10"    89
    "AFG" "2021-01-11"    49
    "AFG" "2021-01-12"    46
    "AFG" "2021-01-13"   106
    "AFG" "2021-01-14"    85
    "AFG" "2021-01-15"    56
    "AFG" "2021-01-16"   107
    "AFG" "2021-01-17"    46
    "AFG" "2021-01-18"    78
    "AFG" "2021-01-19"    79
    "AFG" "2021-01-20"   137
    "AFG" "2021-01-21"   125
    "AFG" "2021-01-22"    80
    "AFG" "2021-01-23"    76
    "AFG" "2021-01-24"    36
    "AFG" "2021-01-25"    77
    "AFG" "2021-01-26"    78
    "AFG" "2021-01-27"   104
    "AFG" "2021-01-28"    37
    "AFG" "2021-01-29"    48
    "AFG" "2021-01-30"    69
    "AFG" "2021-01-31"    15
    "AFG" "2021-02-01"    36
    "AFG" "2021-02-02"    62
    "AFG" "2021-02-03"    53
    "AFG" "2021-02-04"    57
    "AFG" "2021-02-05"    34
    "AFG" "2021-02-06"    65
    "AFG" "2021-02-07"     5
    "AFG" "2021-02-08"    24
    "AFG" "2021-02-09"    25
    "AFG" "2021-02-10"    18
    "AFG" "2021-02-11"    18
    "AFG" "2021-02-12"    25
    "AFG" "2021-02-13"    28
    "AFG" "2021-02-14"    19
    "AFG" "2021-02-15"    22
    "AFG" "2021-02-16"     4
    "AFG" "2021-02-17"    22
    "AFG" "2021-02-18"    17
    "AFG" "2021-02-19"    18
    "AFG" "2021-02-20"     5
    "AFG" "2021-02-21"    24
    "AFG" "2021-02-22"    13
    "AFG" "2021-02-23"    29
    "AFG" "2021-02-24"    18
    "AFG" "2021-02-25"    16
    "AFG" "2021-02-26"    16
    "AFG" "2021-02-27"    11
    "AFG" "2021-02-28"     7
    "AFG" "2021-03-01"    19
    "AFG" "2021-03-02"    26
    "AFG" "2021-03-03"    11
    "AFG" "2021-03-04"     5
    "AFG" "2021-03-05"    52
    "AFG" "2021-03-06"    13
    "AFG" "2021-03-07"     7
    "AFG" "2021-03-08"    29
    "AFG" "2021-03-09"     0
    "AFG" "2021-03-10"    18
    "AFG" "2021-03-11"    23
    "AFG" "2021-03-12"    42
    "AFG" "2021-03-13"     0
    "AFG" "2021-03-14"    26
    "AFG" "2021-03-15"     0
    "AFG" "2021-03-16"    10
    "AFG" "2021-03-17"    21
    "AFG" "2021-03-18"    28
    "AFG" "2021-03-19"    25
    "AFG" "2021-03-20"    24
    "AFG" "2021-03-21"    10
    "AFG" "2021-03-22"    50
    "AFG" "2021-03-23"    24
    "AFG" "2021-03-24"    15
    "AFG" "2021-03-25"    34
    "AFG" "2021-03-26"    28
    "AFG" "2021-03-27"    36
    "AFG" "2021-03-28"     4
    "AFG" "2021-03-29"    28
    "AFG" "2021-03-30"    62
    "AFG" "2021-03-31"    70
    "AFG" "2021-04-01"    63
    "AFG" "2021-04-02"    55
    "AFG" "2021-04-03"    23
    "AFG" "2021-04-04"    81
    "AFG" "2021-04-05"    41
    "AFG" "2021-04-06"    62
    "AFG" "2021-04-07"    94
    "AFG" "2021-04-08"    70
    "AFG" "2021-04-09"    76
    "AFG" "2021-04-10"   125
    "AFG" "2021-04-11"    16
    "AFG" "2021-04-12"    82
    "AFG" "2021-04-13"   122
    "AFG" "2021-04-14"   128
    "AFG" "2021-04-15"    42
    "AFG" "2021-04-16"    78
    "AFG" "2021-04-17"   109
    "AFG" "2021-04-18"    72
    "AFG" "2021-04-19"   105
    "AFG" "2021-04-20"   139
    "AFG" "2021-04-21"   177
    "AFG" "2021-04-22"    98
    "AFG" "2021-04-23"   230
    "AFG" "2021-04-24"   188
    "AFG" "2021-04-25"   113
    "AFG" "2021-04-26"   172
    "AFG" "2021-04-27"   210
    "AFG" "2021-04-28"   145
    "AFG" "2021-04-29"   206
    "AFG" "2021-04-30"   169
    "AFG" "2021-05-01"   194
    "AFG" "2021-05-02"   183
    "AFG" "2021-05-03"   178
    "AFG" "2021-05-04"   263
    "AFG" "2021-05-05"   234
    "AFG" "2021-05-06"   365
    "AFG" "2021-05-07"   293
    "AFG" "2021-05-08"   300
    "AFG" "2021-05-09"    87
    "AFG" "2021-05-10"   221
    "AFG" "2021-05-11"   340
    "AFG" "2021-05-12"   315
    "AFG" "2021-05-13"   327
    "AFG" "2021-05-14"   310
    "AFG" "2021-05-15"    57
    "AFG" "2021-05-16"    72
    "AFG" "2021-05-17"   114
    "AFG" "2021-05-18"   221
    "AFG" "2021-05-19"   303
    "AFG" "2021-05-20"   453
    "AFG" "2021-05-21"   505
    "AFG" "2021-05-22"   406
    "AFG" "2021-05-23"   242
    "AFG" "2021-05-24"   547
    "AFG" "2021-05-25"   628
    "AFG" "2021-05-26"   840
    "AFG" "2021-05-27"   623
    "AFG" "2021-05-28"   764
    "AFG" "2021-05-29"   981
    "AFG" "2021-05-30"   650
    "AFG" "2021-05-31"  1077
    "AFG" "2021-06-01"  1139
    "AFG" "2021-06-02"  1049
    "AFG" "2021-06-03"  1093
    "AFG" "2021-06-04"  1509
    "AFG" "2021-06-05"  1335
    "AFG" "2021-06-06"  1261
    "AFG" "2021-06-07"  1617
    "AFG" "2021-06-08"  1485
    "AFG" "2021-06-09"  1724
    "AFG" "2021-06-10"  1842
    "AFG" "2021-06-11"  1824
    "AFG" "2021-06-12"  1024
    "AFG" "2021-06-13"  1121
    "AFG" "2021-06-14"  1597
    "AFG" "2021-06-15"  1814
    "AFG" "2021-06-16"    16
    "AFG" "2021-06-17"  3243
    "AFG" "2021-06-18"  2203
    "AFG" "2021-06-19"  1787
    "AFG" "2021-06-20"  1385
    "AFG" "2021-06-21"  1996
    "AFG" "2021-06-22"  1847
    "AFG" "2021-06-23"  2208
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    "ALB" "2020-12-25"   553
    "ALB" "2020-12-26"   375
    "ALB" "2020-12-27"   499
    "ALB" "2020-12-28"   318
    "ALB" "2020-12-29"   574
    "ALB" "2020-12-30"   581
    "ALB" "2020-12-31"   589
    "ALB" "2021-01-01"     0
    "ALB" "2021-01-02"   675
    "ALB" "2021-01-03"   447
    "ALB" "2021-01-04"   185
    "ALB" "2021-01-05"   660
    "ALB" "2021-01-06"   725
    "ALB" "2021-01-07"   697
    "ALB" "2021-01-08"   673
    "ALB" "2021-01-09"   655
    "ALB" "2021-01-10"   562
    "ALB" "2021-01-11"   376
    "ALB" "2021-01-12"   656
    "ALB" "2021-01-13"   707
    "ALB" "2021-01-14"   660
    "ALB" "2021-01-15"   641
    "ALB" "2021-01-16"   581
    "ALB" "2021-01-17"   474
    "ALB" "2021-01-18"   292
    "ALB" "2021-01-19"   586
    "ALB" "2021-01-20"   670
    "ALB" "2021-01-21"   678
    "ALB" "2021-01-22"   739
    "ALB" "2021-01-23"   786
    "ALB" "2021-01-24"   833
    "ALB" "2021-01-25"   538
    "ALB" "2021-01-26"   879
    "ALB" "2021-01-27"   876
    "ALB" "2021-01-28"   887
    "ALB" "2021-01-29"   896
    "ALB" "2021-01-30"   901
    "ALB" "2021-01-31"   876
    "ALB" "2021-02-01"   865
    "ALB" "2021-02-02"   942
    "ALB" "2021-02-03"  1007
    "ALB" "2021-02-04"  1052
    "ALB" "2021-02-05"  1089
    "ALB" "2021-02-06"  1130
    "ALB" "2021-02-07"  1124
    "ALB" "2021-02-08"   953
    "ALB" "2021-02-09"  1239
    "ALB" "2021-02-10"  1143
    "ALB" "2021-02-11"  1105
    "ALB" "2021-02-12"  1059
    "ALB" "2021-02-13"  1152
    "ALB" "2021-02-14"  1088
    "ALB" "2021-02-15"   775
    "ALB" "2021-02-16"   801
    "ALB" "2021-02-17"  1075
    "ALB" "2021-02-18"  1112
    "ALB" "2021-02-19"  1071
    "ALB" "2021-02-20"  1153
    "ALB" "2021-02-21"  1184
    "ALB" "2021-02-22"  1039
    "ALB" "2021-02-23"  1021
    "ALB" "2021-02-24"  1021
    "ALB" "2021-02-25"   986
    "ALB" "2021-02-26"   916
    "ALB" "2021-02-27"   986
    "ALB" "2021-02-28"   952
    "ALB" "2021-03-01"   764
    "ALB" "2021-03-02"   892
    "ALB" "2021-03-03"   851
    "ALB" "2021-03-04"   847
    "ALB" "2021-03-05"   780
    "ALB" "2021-03-06"   777
    "ALB" "2021-03-07"   819
    "ALB" "2021-03-08"   683
    "ALB" "2021-03-09"   629
    "ALB" "2021-03-10"   631
    "ALB" "2021-03-11"   602
    "ALB" "2021-03-12"   681
    "ALB" "2021-03-13"   698
    "ALB" "2021-03-14"   653
    "ALB" "2021-03-15"   543
    "ALB" "2021-03-16"   475
    "ALB" "2021-03-17"   446
    "ALB" "2021-03-18"   590
    "ALB" "2021-03-19"   494
    "ALB" "2021-03-20"   519
    "ALB" "2021-03-21"   659
    "ALB" "2021-03-22"   344
    "ALB" "2021-03-23"   303
    "ALB" "2021-03-24"   448
    "ALB" "2021-03-25"   472
    "ALB" "2021-03-26"   449
    "ALB" "2021-03-27"   425
    "ALB" "2021-03-28"   493
    "ALB" "2021-03-29"   285
    "ALB" "2021-03-30"   304
    "ALB" "2021-03-31"   434
    "ALB" "2021-04-01"   349
    "ALB" "2021-04-02"   336
    "ALB" "2021-04-03"   341
    "ALB" "2021-04-04"   348
    "ALB" "2021-04-05"   264
    "ALB" "2021-04-06"   141
    "ALB" "2021-04-07"   256
    "ALB" "2021-04-08"   317
    "ALB" "2021-04-09"   286
    "ALB" "2021-04-10"   360
    "ALB" "2021-04-11"   238
    "ALB" "2021-04-12"   125
    "ALB" "2021-04-13"   234
    "ALB" "2021-04-14"   207
    "ALB" "2021-04-15"   169
    "ALB" "2021-04-16"   179
    "ALB" "2021-04-17"   149
    "ALB" "2021-04-18"   138
    "ALB" "2021-04-19"   100
    "ALB" "2021-04-20"   148
    "ALB" "2021-04-21"   138
    "ALB" "2021-04-22"   134
    "ALB" "2021-04-23"   156
    "ALB" "2021-04-24"   139
    "ALB" "2021-04-25"   128
    "ALB" "2021-04-26"    69
    "ALB" "2021-04-27"   130
    "ALB" "2021-04-28"   123
    "ALB" "2021-04-29"   118
    "ALB" "2021-04-30"   108
    end
    ------------------ copy up to and including the previous line ------------------


  • #2
    I'm not at my computer right now, and the syntax escapes me, but you'll wanna generate the week variable using (I think, I'm sure Nick Cox will correct me) the week function, and the quarterly variable using the quarter function, and then you'll use the collapse command, summing your number of case variables by nation, week, and quarter.

    After I'm home in 20 minutes, assuming nobody's beaten me to the punch, I'll give the syntax

    Comment


    • #3
      See https://www.statalist.org/forums/for...h-respectively for various comments. I wouldn't reach for the week() function here at all, but I don't have an alternative suggestion until you tell us your definition of a week.

      Comment


      • #4
        Thank you for your responses. Nick: the definition of a week is the sum of COVID-19 cases during seven days (Monday to Sunday).

        Comment


        • #5
          Weeks start on Monday. See the links and other material in the cited thread for technique

          Comment


          • #6
            I am working on the codes in the link. Thank you, Nick.

            Comment


            • #7
              Sample code given your data example

              Code:
              gen ddate = daily(date, "YMD")
              format ddate %td 
              
              gen wdate = ddate if dow(ddate) == 1 
              format wdate %td 
              
              bysort iso_code (ddate) : replace wdate = wdate[_n-1] if  missing(wdate) 
              
              * partial weeks at beginning 
              replace wdate = ddate - 6 if dow(ddate) == 0 & missing(wdate)
              replace wdate = ddate + 1 - dow(ddate) if missing(wdate)
              
              egen wanted = total(new_cases), by(iso_code wdate)
              
              tabdisp wdate iso_code, c(wanted)
              
              ------------------------
                        |   iso_code  
                  wdate |   AFG    ALB
              ----------+-------------
              24feb2020 |     5      0
              02mar2020 |     3      0
              09mar2020 |    12     42
              16mar2020 |    16     47
              23mar2020 |    80    123
              30mar2020 |   185    149
              06apr2020 |   256     85
              13apr2020 |   378    116
              20apr2020 |   530    164
              27apr2020 |  1006     69
              04may2020 |  1933     73
              11may2020 |  2233     78
              18may2020 |  4033     52
              25may2020 |  4512    139
              01jun2020 |  5248    109
              08jun2020 |  4424    275
              15jun2020 |  4067    441
              22jun2020 |  2134    440
              29jun2020 |  1984    491
              06jul2020 |  1500    561
              13jul2020 |  1024    636
              20jul2020 |   682    673
              27jul2020 |   553    756
              03aug2020 |   344    892
              10aug2020 |   542    969
              17aug2020 |   357   1047
              24aug2020 |   190    953
              31aug2020 |   255    875
              07sep2020 |   318   1098
              14sep2020 |   328   1032
              21sep2020 |   183    874
              28sep2020 |   114   1007
              05oct2020 |   458   1133
              12oct2020 |   401   1656
              19oct2020 |   482   2102
              26oct2020 |   657   2045
              02nov2020 |   608   3004
              09nov2020 |  1002   3624
              16nov2020 |  1468   4931
              23nov2020 |  1463   4864
              30nov2020 |  1675   5363
              07dec2020 |  1311   5542
              14dec2020 |  1584   4473
              21dec2020 |  1312   3251
              28dec2020 |   861   3184
              04jan2021 |   780   4157
              11jan2021 |   495   4095
              18jan2021 |   611   4584
              25jan2021 |   428   5853
              01feb2021 |   312   7209
              08feb2021 |   157   7739
              15feb2021 |   112   7171
              22feb2021 |   110   6921
              01mar2021 |   133   5730
              08mar2021 |   138   4577
              15mar2021 |   118   3726
              22mar2021 |   191   2934
              29mar2021 |   382   2397
              05apr2021 |   484   1862
              12apr2021 |   633   1201
              19apr2021 |  1050    943
              26apr2021 |  1279    548
              03may2021 |  1720       
              10may2021 |  1642       
              17may2021 |  2244       
              24may2021 |  5033       
              31may2021 |  8463       
              07jun2021 | 10637       
              14jun2021 | 12045       
              21jun2021 | 12314       
              28jun2021 | 10528       
              05jul2021 |  8830       
              12jul2021 |  7024       
              19jul2021 |  3269       
              26jul2021 |  3630       
              02aug2021 |  2957       
              09aug2021 |  1575       
              16aug2021 |   478       
              23aug2021 |   522       
              30aug2021 |   390       
              06sep2021 |   567       
              13sep2021 |   497       
              20sep2021 |   473       
              27sep2021 |   231       
              04oct2021 |   317       
              11oct2021 |   256       
              18oct2021 |   180       
              25oct2021 |   306       
              01nov2021 |   147       
              08nov2021 |   155       
              15nov2021 |   344       
              22nov2021 |   322       
              29nov2021 |   236       
              06dec2021 |   179       
              13dec2021 |   154       
              20dec2021 |   164       
              27dec2021 |   133       
              ------------------------

              Comment


              • #8
                Here is more concise code using my https://www.stata-journal.com/articl...article=dm0052


                Code:
                gen ddate = daily(date, "YMD")
                gen Wdate =  ddate - mod(dow(ddate) - 1, 7) 
                format Wdate ddate %td 
                egen wanted = total(new_cases), by(iso_code Wdate)
                The magic constants 7 and 1 are easily explained. 7 is the number of days in a week (you knew that) and 1 is returned by dow() for Mondays. For weeks that start on Sunday Tuesday ... Saturday use 0 2 ... 6 instead.

                Comment


                • #9
                  Correction to previous.

                  The magic constants 7 and 1 are easily explained. 7 is the number of days in a week (you knew that) and 1 is returned by dow() for Mondays.

                  For weeks that start on Sunday subtract dow(ddate)

                  For weeks that start on Tuesday ... Saturday use 2 ... 6 instead of 1.

                  Comment


                  • #10
                    Many thank for this Nick. I appreciate it!

                    Comment

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