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Transforms an unbalanced panel dataset into a balanced one by either keeping only complete units or filling missing time points with a specified value.

Usage

balance_panel(data, unit_col = NULL, time_col = NULL,
              fill = NA_real_, method = c("fill", "complete"),
              verbose = FALSE)

Arguments

data

A data frame containing panel data.

unit_col

Column index or name identifying the individual unit (e.g., station ID, subject ID). If NULL, the first column is assumed.

time_col

Column index or name identifying the time point. If NULL, the first column matching date is used.

fill

Value used to fill missing combinations when method = "fill".

method

Balancing method: "fill" adds rows for missing unit-time combinations and fills numeric non-key columns with fill; non-numeric columns of the added rows are left as NA. "complete" keeps only units that have observations at every time point.

verbose

Logical; if TRUE, prints progress message.

Details

The function assumes that the time column is sorted and contains no duplicates within a unit. If duplicates exist, they should be handled beforehand.

Value

A balanced data frame.

Examples

balance_panel(data[1:200, c(1, 4, 17:19)], unit_col = 2, time_col = 1, method = "complete")
#>                    date    monthyear     3.98     4.47     5.01
#> 1   2019-12-31 16:00:00 January 2020       NA       NA       NA
#> 2   2019-12-31 16:10:00 January 2020       NA       NA       NA
#> 3   2019-12-31 16:20:00 January 2020       NA       NA       NA
#> 4   2019-12-31 16:30:00 January 2020  42.9722  74.7785  24.8375
#> 5   2019-12-31 16:40:00 January 2020       NA   6.8651  44.7176
#> 6   2019-12-31 16:50:00 January 2020  61.2601       NA       NA
#> 7   2019-12-31 17:00:00 January 2020 115.8960       NA       NA
#> 8   2019-12-31 17:10:00 January 2020       NA       NA       NA
#> 9   2019-12-31 17:20:00 January 2020  61.2601       NA       NA
#> 10  2019-12-31 17:30:00 January 2020  60.9405   6.5912  42.9332
#> 11  2019-12-31 17:40:00 January 2020       NA       NA       NA
#> 12  2019-12-31 17:50:00 January 2020       NA       NA       NA
#> 13  2019-12-31 18:00:00 January 2020       NA  13.9498  90.8651
#> 14  2019-12-31 18:10:00 January 2020       NA       NA       NA
#> 15  2019-12-31 18:20:00 January 2020  61.2601       NA       NA
#> 16  2019-12-31 18:30:00 January 2020 130.9630 227.8960  75.6951
#> 17  2019-12-31 18:40:00 January 2020       NA       NA       NA
#> 18  2019-12-31 18:50:00 January 2020       NA       NA       NA
#> 19  2019-12-31 19:00:00 January 2020       NA       NA       NA
#> 20  2019-12-31 19:10:00 January 2020 133.5230 148.2000  49.2241
#> 21  2019-12-31 19:20:00 January 2020  61.2601       NA       NA
#> 22  2019-12-31 19:40:00 January 2020       NA       NA       NA
#> 23  2019-12-31 19:50:00 January 2020       NA       NA       NA
#> 24  2019-12-31 20:00:00 January 2020       NA       NA       NA
#> 25  2019-12-31 20:10:00 January 2020       NA       NA       NA
#> 26  2019-12-31 20:20:00 January 2020  42.8723  74.6047  24.7797
#> 27  2019-12-31 20:30:00 January 2020  42.9722  74.7785  24.8375
#> 28  2019-12-31 20:40:00 January 2020       NA       NA       NA
#> 29  2019-12-31 20:50:00 January 2020       NA   7.2200  47.0292
#> 30  2019-12-31 21:00:00 January 2020       NA       NA       NA
#> 31  2019-12-31 21:10:00 January 2020  96.5514  72.1565  23.9666
#> 32  2019-12-31 21:20:00 January 2020  39.7904  75.6110  64.4859
#> 33  2019-12-31 21:30:00 January 2020  96.7000  72.5003  24.0808
#> 34  2019-12-31 21:40:00 January 2020       NA       NA       NA
#> 35  2019-12-31 21:50:00 January 2020       NA       NA       NA
#> 36  2019-12-31 22:00:00 January 2020       NA       NA       NA
#> 37  2019-12-31 22:10:00 January 2020       NA       NA       NA
#> 38  2019-12-31 22:20:00 January 2020  45.0185  78.3394  26.0202
#> 39  2019-12-31 22:30:00 January 2020  61.2601       NA       NA
#> 40  2019-12-31 22:40:00 January 2020  82.6597 150.5060  91.1891
#> 41  2019-12-31 22:50:00 January 2020       NA       NA       NA
#> 42  2019-12-31 23:00:00 January 2020  61.2601       NA       NA
#> 43  2019-12-31 23:10:00 January 2020       NA       NA       NA
#> 44  2019-12-31 23:20:00 January 2020  57.7803       NA       NA
#> 45  2019-12-31 23:30:00 January 2020       NA       NA       NA
#> 46  2019-12-31 23:40:00 January 2020       NA       NA       NA
#> 47  2019-12-31 23:50:00 January 2020  61.2601       NA       NA
#> 48  2020-01-01 00:00:00 January 2020       NA       NA       NA
#> 49  2020-01-01 00:10:00 January 2020       NA       NA       NA
#> 50  2020-01-01 00:20:00 January 2020       NA       NA       NA
#> 51  2020-01-01 00:30:00 January 2020       NA       NA       NA
#> 52  2020-01-01 00:40:00 January 2020  35.9966  76.5024 111.1020
#> 53  2020-01-01 00:50:00 January 2020       NA       NA       NA
#> 54  2020-01-01 01:00:00 January 2020       NA       NA       NA
#> 55  2020-01-01 01:10:00 January 2020  61.2601       NA       NA
#> 56  2020-01-01 01:20:00 January 2020  94.8684  76.2325  25.3204
#> 57  2020-01-01 01:30:00 January 2020       NA   6.6070  43.0364
#> 58  2020-01-01 01:40:00 January 2020       NA   6.9749  45.4325
#> 59  2020-01-01 01:50:00 January 2020       NA       NA       NA
#> 60  2020-01-01 02:20:00 January 2020       NA       NA       NA
#> 61  2020-01-01 02:30:00 January 2020       NA       NA       NA
#> 62  2020-01-01 02:40:00 January 2020       NA       NA       NA
#> 63  2020-01-01 02:50:00 January 2020       NA       NA       NA
#> 64  2020-01-01 03:00:00 January 2020       NA       NA       NA
#> 65  2020-01-01 03:10:00 January 2020       NA       NA       NA
#> 66  2020-01-01 03:20:00 January 2020       NA       NA       NA
#> 67  2020-01-01 03:30:00 January 2020 122.5200       NA       NA
#> 68  2020-01-01 03:40:00 January 2020       NA       NA       NA
#> 69  2020-01-01 03:50:00 January 2020       NA       NA       NA
#> 70  2020-01-01 04:00:00 January 2020       NA       NA       NA
#> 71  2020-01-01 04:10:00 January 2020       NA       NA       NA
#> 72  2020-01-01 04:20:00 January 2020 129.7860 148.3430  49.2718
#> 73  2020-01-01 04:30:00 January 2020       NA       NA       NA
#> 74  2020-01-01 04:40:00 January 2020       NA       NA       NA
#> 75  2020-01-01 04:50:00 January 2020       NA       NA       NA
#> 76  2020-01-01 05:00:00 January 2020       NA       NA       NA
#> 77  2020-01-01 05:40:00 January 2020       NA       NA       NA
#> 78  2020-01-01 05:50:00 January 2020       NA       NA       NA
#> 79  2020-01-01 06:00:00 January 2020       NA       NA       NA
#> 80  2020-01-01 06:10:00 January 2020       NA       NA       NA
#> 81  2020-01-01 06:20:00 January 2020       NA   6.9749  45.4325
#> 82  2020-01-01 06:30:00 January 2020       NA       NA       NA
#> 83  2020-01-01 06:40:00 January 2020       NA  21.1830 137.9800
#> 84  2020-01-01 06:50:00 January 2020       NA  13.9498  90.8651
#> 85  2020-01-01 07:00:00 January 2020       NA       NA       NA
#> 86  2020-01-01 07:10:00 January 2020       NA       NA       NA
#> 87  2020-01-01 07:20:00 January 2020 122.5200       NA       NA
#> 88  2020-01-01 07:30:00 January 2020       NA   7.2332  47.1152
#> 89  2020-01-01 07:40:00 January 2020  42.9722  74.7785  24.8375
#> 90  2020-01-01 07:50:00 January 2020       NA       NA       NA
#> 91  2020-01-01 08:00:00 January 2020       NA       NA       NA
#> 92  2020-01-01 08:10:00 January 2020       NA       NA       NA
#> 93  2020-01-01 08:20:00 January 2020       NA       NA       NA
#> 94  2020-01-01 08:30:00 January 2020       NA       NA       NA
#> 95  2020-01-01 08:40:00 January 2020       NA       NA       NA
#> 96  2020-01-01 08:50:00 January 2020       NA       NA       NA
#> 97  2020-01-01 09:00:00 January 2020       NA       NA       NA
#> 98  2020-01-01 09:10:00 January 2020       NA       NA       NA
#> 99  2020-01-01 09:20:00 January 2020       NA       NA       NA
#> 100 2020-01-01 09:30:00 January 2020       NA       NA       NA
#> 101 2020-01-01 09:40:00 January 2020       NA       NA       NA
#> 102 2020-01-01 09:50:00 January 2020       NA       NA       NA
#> 103 2020-01-01 10:00:00 January 2020       NA       NA       NA
#> 104 2020-01-01 10:10:00 January 2020       NA       NA       NA
#> 105 2020-01-01 10:20:00 January 2020       NA       NA       NA
#> 106 2020-01-01 10:30:00 January 2020       NA       NA       NA
#> 107 2020-01-01 10:40:00 January 2020       NA       NA       NA
#> 108 2020-01-01 10:50:00 January 2020  45.0185  78.3394  26.0202
#> 109 2020-01-01 11:00:00 January 2020       NA       NA       NA
#> 110 2020-01-01 11:10:00 January 2020       NA       NA       NA
#> 111 2020-01-01 11:20:00 January 2020       NA       NA       NA
#> 112 2020-01-01 11:30:00 January 2020       NA       NA       NA
#> 113 2020-01-01 11:40:00 January 2020       NA       NA       NA
#> 114 2020-01-01 11:50:00 January 2020       NA       NA       NA
#> 115 2020-01-01 12:00:00 January 2020       NA       NA       NA
#> 116 2020-01-01 12:10:00 January 2020  42.4098  73.7999  24.5124
#> 117 2020-01-01 12:20:00 January 2020  45.0185  78.3394  26.0202
#> 118 2020-01-01 12:30:00 January 2020       NA       NA       NA
#> 119 2020-01-01 12:40:00 January 2020       NA   6.8972  44.9267
#> 120 2020-01-01 12:50:00 January 2020       NA       NA       NA
#> 121 2020-01-01 13:00:00 January 2020       NA       NA       NA
#> 122 2020-01-01 13:10:00 January 2020       NA       NA       NA
#> 123 2020-01-01 13:20:00 January 2020       NA       NA       NA
#> 124 2020-01-01 13:30:00 January 2020       NA       NA       NA
#> 125 2020-01-01 13:40:00 January 2020       NA       NA       NA
#> 126 2020-01-01 13:50:00 January 2020       NA       NA       NA
#> 127 2020-01-01 14:00:00 January 2020       NA       NA       NA
#> 128 2020-01-01 14:10:00 January 2020       NA       NA       NA
#> 129 2020-01-01 14:20:00 January 2020  60.9227   6.9600  45.3353
#> 130 2020-01-01 14:30:00 January 2020       NA       NA       NA
#> 131 2020-01-01 14:40:00 January 2020       NA   7.2332  47.1152
#> 132 2020-01-01 14:50:00 January 2020       NA       NA       NA
#> 133 2020-01-01 15:00:00 January 2020       NA       NA       NA
#> 134 2020-01-01 15:10:00 January 2020       NA       NA       NA
#> 135 2020-01-01 15:20:00 January 2020       NA       NA       NA
#> 136 2020-01-01 15:30:00 January 2020       NA   6.9422  45.2198
#> 137 2020-01-01 15:40:00 January 2020       NA       NA       NA
#> 138 2020-01-01 15:50:00 January 2020       NA       NA       NA
#> 139 2020-01-01 16:00:00 January 2020       NA       NA       NA
#> 140 2020-01-01 16:10:00 January 2020  57.1449       NA       NA
#> 141 2020-01-01 16:20:00 January 2020       NA   9.3776  47.8526
#> 142 2020-01-01 16:30:00 January 2020       NA       NA       NA
#> 143 2020-01-01 16:40:00 January 2020       NA       NA       NA
#> 144 2020-01-01 16:50:00 January 2020  46.2837  72.0913  21.9483
#> 145 2020-01-01 17:00:00 January 2020       NA       NA       NA
#> 146 2020-01-01 17:10:00 January 2020       NA       NA       NA
#> 147 2020-01-01 17:20:00 January 2020  42.4445  75.6723  68.9153
#> 148 2020-01-01 17:30:00 January 2020       NA       NA       NA
#> 149 2020-01-01 17:40:00 January 2020       NA       NA       NA
#> 150 2020-01-01 17:50:00 January 2020       NA       NA       NA
#> 151 2020-01-01 18:00:00 January 2020       NA       NA       NA
#> 152 2020-01-01 18:10:00 January 2020       NA       NA       NA
#> 153 2020-01-01 18:20:00 January 2020  57.1449       NA       NA
#> 154 2020-01-01 18:30:00 January 2020       NA       NA       NA
#> 155 2020-01-01 18:40:00 January 2020       NA       NA       NA
#> 156 2020-01-01 18:50:00 January 2020       NA       NA       NA
#> 157 2020-01-01 19:00:00 January 2020       NA       NA       NA
#> 158 2020-01-01 19:10:00 January 2020       NA       NA       NA
#> 159 2020-01-01 19:20:00 January 2020       NA       NA       NA
#> 160 2020-01-01 19:30:00 January 2020       NA       NA       NA
#> 161 2020-01-01 19:40:00 January 2020       NA       NA       NA
#> 162 2020-01-01 19:50:00 January 2020       NA       NA       NA
#> 163 2020-01-01 20:00:00 January 2020  96.1242  69.8581  21.2684
#> 164 2020-01-01 20:10:00 January 2020       NA       NA       NA
#> 165 2020-01-01 20:20:00 January 2020       NA       NA       NA
#> 166 2020-01-01 20:30:00 January 2020       NA       NA       NA
#> 167 2020-01-01 20:40:00 January 2020       NA       NA       NA
#> 168 2020-01-01 20:50:00 January 2020       NA   9.3871  47.9009
#> 169 2020-01-01 21:00:00 January 2020       NA       NA       NA
#> 170 2020-01-01 21:10:00 January 2020  57.1449       NA       NA
#> 171 2020-01-01 21:20:00 January 2020       NA       NA       NA
#> 172 2020-01-01 21:30:00 January 2020       NA       NA       NA
#> 173 2020-01-01 21:40:00 January 2020       NA       NA       NA
#> 174 2020-01-01 21:50:00 January 2020       NA       NA       NA
#> 175 2020-01-01 22:00:00 January 2020       NA   9.3871  47.9009
#> 176 2020-01-01 22:10:00 January 2020       NA       NA       NA
#> 177 2020-01-01 22:20:00 January 2020       NA       NA       NA
#> 178 2020-01-01 22:30:00 January 2020       NA       NA       NA
#> 179 2020-01-01 22:40:00 January 2020       NA       NA       NA
#> 180 2020-01-01 22:50:00 January 2020       NA       NA       NA
#> 181 2020-01-01 23:00:00 January 2020       NA       NA       NA
#> 182 2020-01-01 23:10:00 January 2020       NA       NA       NA
#> 183 2020-01-01 23:20:00 January 2020       NA       NA       NA
#> 184 2020-01-01 23:30:00 January 2020       NA       NA       NA
#> 185 2020-01-01 23:40:00 January 2020       NA       NA       NA
#> 186 2020-01-01 23:50:00 January 2020       NA       NA       NA
#> 187 2020-01-02 00:00:00 January 2020  57.1449       NA       NA
#> 188 2020-01-02 00:10:00 January 2020       NA       NA       NA
#> 189 2020-01-02 00:20:00 January 2020       NA       NA       NA
#> 190 2020-01-02 00:30:00 January 2020       NA       NA       NA
#> 191 2020-01-02 00:40:00 January 2020       NA       NA       NA
#> 192 2020-01-02 00:50:00 January 2020  46.2837  72.0913  21.9483
#> 193 2020-01-02 01:00:00 January 2020  49.8677  77.6738  23.6479
#> 194 2020-01-02 01:10:00 January 2020       NA       NA       NA
#> 195 2020-01-02 01:20:00 January 2020       NA       NA       NA
#> 196 2020-01-02 01:30:00 January 2020  58.8257       NA       NA
#> 197 2020-01-02 01:40:00 January 2020       NA       NA       NA
#> 198 2020-01-02 01:50:00 January 2020       NA       NA       NA
#> 199 2020-01-02 02:00:00 January 2020       NA       NA       NA
#> 200 2020-01-02 02:10:00 January 2020       NA       NA       NA