我有两个数据框：df1和df2。 df1有一列，df2有两列，但它们共享相同的名称列：numWeek。
数据帧的例子：
df1 : df2:
numWeek effective numWeek
2000-01-03 1 2000-01-03
2000-01-10 1 2000-02-14
2000-01-17 1 2000-02-28
2000-01-24 1 2000-03-13
2000-01-31 1 2000-04-10
2000-02-07 1 2000-05-01
2000-02-14 4 2000-05-08
2000-02-21 3 2000-05-15
2000-02-28 4 2000-05-22
2000-03-06 5 2000-05-29
2000-03-13 8 2000-06-05
2000-03-20 4 2000-06-12
我想要做的是，如果匹配，则将effective的col df2的值提供给df1的新列。为此，我做了：
test_matchso <- match(df1[,1], as.Date(df2[,2]), nomatch = 0)
并在匹配时从ids返回df2，如果不匹配则返回0：
1 0 0 0 0 0 2 0 3 0 4 0
我现在要做的就是使用ifelse()：
ifelse(test_matchso !=0, df2$effective[test_matchso], 0)
我得到了我预期的结果：
1 0 0 0 0 0 1 0 1 0 1 0
但最大的问题是，当我处理我的真实数据帧时，我得到了一些非预期值，而我在本例中使用的两个数据帧只是这些数据帧的一部分。
我为此次比赛获得的结果（与前一次相同）：1 0 0 0 0 0 2 0 3 0 4 0
1 0 0 0 0 0 4 0 4 0 8
这些值完全荒谬，我应该得到与示例相同的结果。
真实数据框的head(n=12)：
effective numWeek
1 1 2000-01-03
2 1 2000-02-14
3 1 2000-02-28
4 1 2000-03-13
5 1 2000-04-10
6 1 2000-05-01
7 4 2000-05-08
8 3 2000-05-15
9 4 2000-05-22
10 5 2000-05-29
11 8 2000-06-05
12 4 2000-06-12
有了这个，我理解，不管怎样，他没有使用匹配中的id，而是使用行的id：2是match的第7个元素，所以它需要数据帧的第七行，但这不是我所想的......
由于我的两个数据帧的大小不同，它可能不起作用吗？
真实的数据帧将在最后给出，以下是尝试它的代码：
test_match <- match(rdf2$numWeek, as.Date(rdf1$numWeek), nomatch = 0)
ifelse(test_match!=0, yes = rdf1$effective[test_match], no = 0)
我真的很感激用ifelse()了解这种奇怪的行为。
示例数据：
df1：
structure(list(`head(test$numWeek, n = 12)` = structure(c(10959,
10966, 10973, 10980, 10987, 10994, 11001, 11008, 11015, 11022,
11029, 11036), class = "Date")), .Names = "head(test$numWeek, n = 12)", row.names = c(NA,
-12L), class = "data.frame")
df2：
structure(list(effective = c(1, 1, 1, 1, 1, 1, 4, 3, 4, 5, 8,
4), numWeek = c("2000-01-03", "2000-02-14", "2000-02-28", "2000-03-13",
"2000-04-10", "2000-05-01", "2000-05-08", "2000-05-15", "2000-05-22",
"2000-05-29", "2000-06-05", "2000-06-12")), .Names = c("effective",
"numWeek"), row.names = c(NA, 12L), class = "data.frame")
真实数据：
rdf1：
structure(list(effective = c(1, 1, 1, 1, 1, 1, 4, 3, 4, 5, 8,
4, 12, 6, 6, 7, 3, 15, 7, 2, 8, 12, 12, 7, 9, 14, 9, 22, 10,
17, 12, 14, 9, 14, 14, 14, 12, 13, 4, 13, 22, 21, 11, 24, 20,
20, 20, 26, 23, 43, 16, 30, 29, 20, 25, 35, 48, 35, 43, 35, 34,
26, 45, 68, 45, 44, 49, 33, 35, 24, 27, 24, 36, 60, 51, 47, 39,
41, 58, 45, 42, 72, 26, 67, 59, 63, 70, 53, 65, 66, 17, 28, 77,
95, 69, 91, 89, 84, 77, 91, 80, 109, 92, 116, 87, 87, 87, 102,
91, 74, 90, 80, 96, 53, 100, 101, 114, 90, 84, 77, 77, 74, 76,
25, 45, 33, 121, 121, 89, 96, 121, 108, 131, 128, 108, 159, 126,
136, 135, 112, 171, 132, 35, 54, 168, 160, 150, 140, 131, 186,
156, 128, 193, 174, 163, 200, 158, 197, 172, 135, 125, 194, 181,
162, 111, 186, 141, 192, 189, 155, 141, 99, 126, 115, 108, 69,
74, 99, 199, 148, 175, 200, 218, 225, 226, 215, 143, 240, 235,
292, 243, 316, 234, 278, 132, 59, 329, 340, 282, 265, 321, 243,
260, 241, 261, 267, 299, 272, 283, 243, 189, 265, 218, 232, 230,
184, 200, 176, 240, 223, 217, 251, 216, 140, 172, 143, 107, 86,
114, 115, 153, 176, 160, 180, 145, 193, 172, 229, 168, 153, 188,
228, 277, 229, 225, 241, 96, 67, 290, 224, 227, 246, 255, 271,
208, 205, 278, 262, 247, 259, 233, 305, 299, 280, 239, 265, 311,
260, 258, 263, 285, 248, 306, 297, 279, 153, 225, 232, 181, 165,
138, 158, 256, 298, 313, 224, 308, 329, 347, 363, 236, 284, 319,
393, 324, 328, 374, 413, 245, 58, 360, 420, 426, 375, 407, 468,
434, 388, 393, 514, 427, 455, 423, 473, 478, 351, 428, 339, 351,
440, 307, 412, 357, 489, 448, 486, 428, 284, 318, 321, 298, 179,
134, 288, 325, 406, 442, 434, 400, 507, 468, 545, 495, 282, 616,
541, 544, 444, 575, 614, 508, 105, 332, 702, 632, 718, 668, 858,
750, 751, 770, 953, 835, 860, 861, 882, 490, 725, 935, 630, 572,
591, 941, 551, 806, 751, 796, 678, 709, 582, 530, 472, 434, 361,
254, 458, 538, 675, 649, 679, 748, 627, 778, 705, 701, 388, 810,
768, 721, 659, 727, 796, 816, 128, 304, 885, 919, 863, 746, 901,
913, 715, 776, 837, 942, 770, 686, 744, 897, 701, 705, 612, 627,
692, 761, 679, 679, 717, 761, 785, 781, 729, 439, 544, 446, 445,
272, 389, 499, 704, 763, 703, 731, 793, 843, 835, 879, 587, 829,
702, 736, 933, 790, 801, 891, 270, 190, 858, 913, 851, 823, 823,
794, 778, 819, 809, 842, 861, 864, 805, 820, 511, 889, 679, 686,
911, 628, 779, 616, 910, 845, 785, 790, 763, 475, 646, 512, 453,
398, 477, 567, 773, 778, 825, 801, 907, 936, 929, 911, 710, 908,
750, 998, 791, 1022, 939, 921, 414, 233, 1058, 921, 1006, 945,
993, 969, 874, 814, 1102, 897, 1007, 977, 990, 761, 896, 783,
934, 1015, 676, 1034, 751, 1000, 853, 944, 933, 978, 846, 512,
695, 701, 549, 436, 488, 660, 826, 924, 899, 835, 900, 1057,
888, 985, 750, 638, 855, 977, 1117, 789, 977, 969, 554, 258,
1139, 1026, 1062, 956, 1038, 1000, 1096, 967, 805, 1003, 1112,
938, 946, 959, 1062, 923, 622, 891, 909, 964, 911, 512, 1011,
709, 855, 900, 859, 421, 591, 598, 493, 468, 447, 619, 738, 861,
862, 845, 814, 936, 920, 989, 757, 656, 879, 786, 1017, 906,
918, 1046, 602, 216, 1085, 922, 1047, 842, 919, 933, 920, 872,
857, 1016, 934, 892, 924, 961, 638, 846, 930, 598, 660, 670,
954, 604, 832, 842, 903, 786, 833, 683, 623, 642, 536, 504, 313,
585, 656, 846, 864, 812, 883, 897, 932, 885, 970, 465, 701, 1039,
959, 904, 843, 895, 994, 118, 352, 984, 878, 772, 759, 800, 887,
773, 608, 774, 760, 826, 740, 635, 833, 764, 717, 542, 387, 943,
573, 670, 684, 745, 783, 740, 664, 646, 476, 526, 415, 463, 265,
512, 510, 645, 605, 607, 646, 687, 661, 712, 517, 374, 745, 515,
664, 577, 652, 694, 664, 114, 132, 619, 751, 622, 638, 624, 690,
672, 685, 542, 657, 670, 616, 642, 641, 666, 532, 445, 345, 704,
655, 416, 565, 479, 625, 550, 508, 509, 321, 406, 330, 334, 276,
390, 450, 529, 540, 485, 526, 589, 594, 597, 522, 462, 558, 467,
598, 626, 601, 630, 717, 144, 133, 707, 686, 579, 599, 552, 587,
527, 630, 611, 681, 580, 645, 619, 513, 639, 554, 508, 548, 422,
672, 453, 613, 549, 676, 503, 556, 534, 341, 378, 417, 284, 329,
410, 521, 516, 605, 570, 618, 547, 641, 472, 458, 420, 516, 500,
523, 554, 486, 638, 577, 191, 136, 649, 662, 561, 539, 574, 581,
498, 534, 577, 582, 564, 575, 486, 465, 514, 530, 561, 399, 571,
453, 512, 485, 533, 543, 515, 480, 503, 307, 435, 353, 293, 184,
186, 420, 362, 373, 380, 2, 2, 1, 1, 2, 4, 2, 2, 2), numWeek = c("2000-01-03",
"2000-02-14", "2000-02-28", "2000-03-13", "2000-04-10", "2000-05-01",
"2000-05-08", "2000-05-15", "2000-05-22", "2000-05-29", "2000-06-05",
"2000-06-12", "2000-06-19", "2000-06-26", "2000-07-03", "2000-07-10",
"2000-07-17", "2000-07-31", "2000-08-07", "2000-08-14", "2000-08-21",
"2000-08-28", "2000-09-04", "2000-09-11", "2000-09-18", "2000-09-25",
"2000-10-02", "2000-10-09", "2000-10-16", "2000-10-23", "2000-10-30",
"2000-11-06", "2000-11-13", "2000-11-20", "2000-11-27", "2000-12-04",
"2000-12-11", "2000-12-18", "2000-12-25", "2001-01-01", "2001-01-08",
"2001-01-15", "2001-01-22", "2001-01-29", "2001-02-05", "2001-02-12",
"2001-02-19", "2001-02-26", "2001-03-05", "2001-03-12", "2001-03-19",
"2001-03-26", "2001-04-02", "2001-04-09", "2001-04-16", "2001-04-23",
"2001-04-30", "2001-05-07", "2001-05-14", "2001-05-21", "2001-05-28",
"2001-06-04", "2001-06-11", "2001-06-18", "2001-06-25", "2001-07-02",
"2001-07-09", "2001-07-16", "2001-07-23", "2001-07-30", "2001-08-06",
"2001-08-13", "2001-08-20", "2001-08-27", "2001-09-03", "2001-09-10",
"2001-09-17", "2001-09-24", "2001-10-01", "2001-10-08", "2001-10-15",
"2001-10-22", "2001-10-29", "2001-11-05", "2001-11-12", "2001-11-19",
"2001-11-26", "2001-12-03", "2001-12-10", "2001-12-17", "2001-12-24",
"2001-12-31", "2002-01-07", "2002-01-14", "2002-01-21", "2002-01-28",
"2002-02-04", "2002-02-11", "2002-02-18", "2002-02-25", "2002-03-04",
"2002-03-11", "2002-03-18", "2002-03-25", "2002-04-01", "2002-04-08",
"2002-04-15", "2002-04-22", "2002-04-29", "2002-05-06", "2002-05-13",
"2002-05-20", "2002-05-27", "2002-06-03", "2002-06-10", "2002-06-17",
"2002-06-24", "2002-07-01", "2002-07-08", "2002-07-15", "2002-07-22",
"2002-07-29", "2002-08-05", "2002-08-12", "2002-08-19", "2002-08-26",
"2002-09-02", "2002-09-09", "2002-09-16", "2002-09-23", "2002-09-30",
"2002-10-07", "2002-10-14", "2002-10-21", "2002-10-28", "2002-11-04",
"2002-11-11", "2002-11-18", "2002-11-25", "2002-12-02", "2002-12-09",
"2002-12-16", "2002-12-23", "2002-12-30", "2003-01-06", "2003-01-13",
"2003-01-20", "2003-01-27", "2003-02-03", "2003-02-10", "2003-02-17",
"2003-02-24", "2003-03-03", "2003-03-10", "2003-03-17", "2003-03-24",
"2003-03-31", "2003-04-07", "2003-04-14", "2003-04-21", "2003-04-28",
"2003-05-05", "2003-05-12", "2003-05-19", "2003-05-26", "2003-06-02",
"2003-06-09", "2003-06-16", "2003-06-23", "2003-06-30", "2003-07-07",
"2003-07-14", "2003-07-21", "2003-07-28", "2003-08-04", "2003-08-11",
"2003-08-18", "2003-08-25", "2003-09-01", "2003-09-08", "2003-09-15",
"2003-09-22", "2003-09-29", "2003-10-06", "2003-10-13", "2003-10-20",
"2003-10-27", "2003-11-03", "2003-11-10", "2003-11-17", "2003-11-24",
"2003-12-01", "2003-12-08", "2003-12-15", "2003-12-22", "2003-12-29",
"2004-01-05", "2004-01-12", "2004-01-19", "2004-01-26", "2004-02-02",
"2004-02-09", "2004-02-16", "2004-02-23", "2004-03-01", "2004-03-08",
"2004-03-15", "2004-03-22", "2004-03-29", "2004-04-05", "2004-04-12",
"2004-04-19", "2004-04-26", "2004-05-03", "2004-05-10", "2004-05-17",
"2004-05-24", "2004-05-31", "2004-06-07", "2004-06-14", "2004-06-21",
"2004-06-28", "2004-07-05", "2004-07-12", "2004-07-19", "2004-07-26",
"2004-08-02", "2004-08-09", "2004-08-16", "2004-08-23", "2004-08-30",
"2004-09-06", "2004-09-13", "2004-09-20", "2004-09-27", "2004-10-04",
"2004-10-11", "2004-10-18", "2004-10-25", "2004-11-01", "2004-11-08",
"2004-11-15", "2004-11-22", "2004-11-29", "2004-12-06", "2004-12-13",
"2004-12-20", "2004-12-27", "2005-01-03", "2005-01-10", "2005-01-17",
"2005-01-24", "2005-01-31", "2005-02-07", "2005-02-14", "2005-02-21",
"2005-02-28", "2005-03-07", "2005-03-14", "2005-03-21", "2005-03-28",
"2005-04-04", "2005-04-11", "2005-04-18", "2005-04-25", "2005-05-02",
"2005-05-09", "2005-05-16", "2005-05-23", "2005-05-30", "2005-06-06",
"2005-06-13", "2005-06-20", "2005-06-27", "2005-07-04", "2005-07-11",
"2005-07-18", "2005-07-25", "2005-08-01", "2005-08-08", "2005-08-15",
"2005-08-22", "2005-08-29", "2005-09-05", "2005-09-12", "2005-09-19",
"2005-09-26", "2005-10-03", "2005-10-10", "2005-10-17", "2005-10-24",
"2005-10-31", "2005-11-07", "2005-11-14", "2005-11-21", "2005-11-28",
"2005-12-05", "2005-12-12", "2005-12-19", "2005-12-26", "2006-01-02",
"2006-01-09", "2006-01-16", "2006-01-23", "2006-01-30", "2006-02-06",
"2006-02-13", "2006-02-20", "2006-02-27", "2006-03-06", "2006-03-13",
"2006-03-20", "2006-03-27", "2006-04-03", "2006-04-10", "2006-04-17",
"2006-04-24", "2006-05-01", "2006-05-08", "2006-05-15", "2006-05-22",
"2006-05-29", "2006-06-05", "2006-06-12", "2006-06-19", "2006-06-26",
"2006-07-03", "2006-07-10", "2006-07-17", "2006-07-24", "2006-07-31",
"2006-08-07", "2006-08-14", "2006-08-21", "2006-08-28", "2006-09-04",
"2006-09-11", "2006-09-18", "2006-09-25", "2006-10-02", "2006-10-09",
"2006-10-16", "2006-10-23", "2006-10-30", "2006-11-06", "2006-11-13",
"2006-11-20", "2006-11-27", "2006-12-04", "2006-12-11", "2006-12-18",
"2006-12-25", "2007-01-01", "2007-01-08", "2007-01-15", "2007-01-22",
"2007-01-29", "2007-02-05", "2007-02-12", "2007-02-19", "2007-02-26",
"2007-03-05", "2007-03-12", "2007-03-19", "2007-03-26", "2007-04-02",
"2007-04-09", "2007-04-16", "2007-04-23", "2007-04-30", "2007-05-07",
"2007-05-14", "2007-05-21", "2007-05-28", "2007-06-04", "2007-06-11",
"2007-06-18", "2007-06-25", "2007-07-02", "2007-07-09", "2007-07-16",
"2007-07-23", "2007-07-30", "2007-08-06", "2007-08-13", "2007-08-20",
"2007-08-27", "2007-09-03", "2007-09-10", "2007-09-17", "2007-09-24",
"2007-10-01", "2007-10-08", "2007-10-15", "2007-10-22", "2007-10-29",
"2007-11-05", "2007-11-12", "2007-11-19", "2007-11-26", "2007-12-03",
"2007-12-10", "2007-12-17", "2007-12-24", "2007-12-31", "2008-01-07",
"2008-01-14", "2008-01-21", "2008-01-28", "2008-02-04", "2008-02-11",
"2008-02-18", "2008-02-25", "2008-03-03", "2008-03-10", "2008-03-17",
"2008-03-24", "2008-03-31", "2008-04-07", "2008-04-14", "2008-04-21",
"2008-04-28", "2008-05-05", "2008-05-12", "2008-05-19", "2008-05-26",
"2008-06-02", "2008-06-09", "2008-06-16", "2008-06-23", "2008-06-30",
"2008-07-07", "2008-07-14", "2008-07-21", "2008-07-28", "2008-08-04",
"2008-08-11", "2008-08-18", "2008-08-25", "2008-09-01", "2008-09-08",
"2008-09-15", "2008-09-22", "2008-09-29", "2008-10-06", "2008-10-13",
"2008-10-20", "2008-10-27", "2008-11-03", "2008-11-10", "2008-11-17",
"2008-11-24", "2008-12-01", "2008-12-08", "2008-12-15", "2008-12-22",
"2008-12-29", "2009-01-05", "2009-01-12", "2009-01-19", "2009-01-26",
"2009-02-02", "2009-02-09", "2009-02-16", "2009-02-23", "2009-03-02",
"2009-03-09", "2009-03-16", "2009-03-23", "2009-03-30", "2009-04-06",
"2009-04-13", "2009-04-20", "2009-04-27", "2009-05-04", "2009-05-11",
"2009-05-18", "2009-05-25", "2009-06-01", "2009-06-08", "2009-06-15",
"2009-06-22", "2009-06-29", "2009-07-06", "2009-07-13", "2009-07-20",
"2009-07-27", "2009-08-03", "2009-08-10", "2009-08-17", "2009-08-24",
"2009-08-31", "2009-09-07", "2009-09-14", "2009-09-21", "2009-09-28",
"2009-10-05", "2009-10-12", "2009-10-19", "2009-10-26", "2009-11-02",
"2009-11-09", "2009-11-16", "2009-11-23", "2009-11-30", "2009-12-07",
"2009-12-14", "2009-12-21", "2009-12-28", "2010-01-04", "2010-01-11",
"2010-01-18", "2010-01-25", "2010-02-01", "2010-02-08", "2010-02-15",
"2010-02-22", "2010-03-01", "2010-03-08", "2010-03-15", "2010-03-22",
"2010-03-29", "2010-04-05", "2010-04-12", "2010-04-19", "2010-04-26",
"2010-05-03", "2010-05-10", "2010-05-17", "2010-05-24", "2010-05-31",
"2010-06-07", "2010-06-14", "2010-06-21", "2010-06-28", "2010-07-05",
"2010-07-12", "2010-07-19", "2010-07-26", "2010-08-02", "2010-08-09",
"2010-08-16", "2010-08-23", "2010-08-30", "2010-09-06", "2010-09-13",
"2010-09-20", "2010-09-27", "2010-10-04", "2010-10-11", "2010-10-18",
"2010-10-25", "2010-11-01", "2010-11-08", "2010-11-15", "2010-11-22",
"2010-11-29", "2010-12-06", "2010-12-13", "2010-12-20", "2010-12-27",
"2011-01-03", "2011-01-10", "2011-01-17", "2011-01-24", "2011-01-31",
"2011-02-07", "2011-02-14", "2011-02-21", "2011-02-28", "2011-03-07",
"2011-03-14", "2011-03-21", "2011-03-28", "2011-04-04", "2011-04-11",
"2011-04-18", "2011-04-25", "2011-05-02", "2011-05-09", "2011-05-16",
"2011-05-23", "2011-05-30", "2011-06-06", "2011-06-13", "2011-06-20",
"2011-06-27", "2011-07-04", "2011-07-11", "2011-07-18", "2011-07-25",
"2011-08-01", "2011-08-08", "2011-08-15", "2011-08-22", "2011-08-29",
"2011-09-05", "2011-09-12", "2011-09-19", "2011-09-26", "2011-10-03",
"2011-10-10", "2011-10-17", "2011-10-24", "2011-10-31", "2011-11-07",
"2011-11-14", "2011-11-21", "2011-11-28", "2011-12-05", "2011-12-12",
"2011-12-19", "2011-12-26", "2012-01-02", "2012-01-09", "2012-01-16",
"2012-01-23", "2012-01-30", "2012-02-06", "2012-02-13", "2012-02-20",
"2012-02-27", "2012-03-05", "2012-03-12", "2012-03-19", "2012-03-26",
"2012-04-02", "2012-04-09", "2012-04-16", "2012-04-23", "2012-04-30",
"2012-05-07", "2012-05-14", "2012-05-21", "2012-05-28", "2012-06-04",
"2012-06-11", "2012-06-18", "2012-06-25", "2012-07-02", "2012-07-09",
"2012-07-16", "2012-07-23", "2012-07-30", "2012-08-06", "2012-08-13",
"2012-08-20", "2012-08-27", "2012-09-03", "2012-09-10", "2012-09-17",
"2012-09-24", "2012-10-01", "2012-10-08", "2012-10-15", "2012-10-22",
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