-1
Wie greife ich auf Zeilen in einem Datenrahmen mit einer Variablen zu? Wenn ich einen Datenrahmen habe te und ich möchte alle Zeilen einer Spalte bekommen, aber ich muss eine Variable verwenden, um auf sie zuzugreifen, wie mache ich das? Ich möchte so etwas wie dies zu tun:Wie erhält man dynamisch die Anzahl der Zeilen für jeden Faktor?
target<-"BASKET_SIZE"
for(x in levels(te[target]))
te[target==x]
Hier te:
structure(list(SHOP_DATE = c(20060410L, 20060410L, 20060411L, 20060415L, 20060413L, 20060415L, 20060414L, 20060413L, 20060416L, 20060414L, 20060413L, 20060415L, 20060416L, 20060413L, 20060415L, 20060411L, 20060416L, 20060415L, 20060411L, 20060410L), SHOP_WEEKDAY = c(2L, 2L, 3L, 7L, 5L, 7L, 6L, 5L, 1L, 6L, 5L, 7L, 1L, 5L, 7L, 3L, 1L, 7L, 3L, 2L), SHOP_HOUR = c(14L, 13L, 13L, 8L, 14L, 10L, 13L, 13L, 12L, 15L, 15L, 13L, 15L, 18L, 11L, 11L, 15L, 14L, 17L, 20L), QUANTITY = c(28L, 2L, 1L, 26L, 14L, 16L, 6L, 6L, 4L, 3L, 8L, 3L, 6L, 1L, 4L, 2L, 7L, 3L, 9L, 2L), SPEND = c(38.83, 1.9, 0.85, 35.71, 4.02, 18.09, 5.43, 12.09, 7.94, 2.37, 18.13, 3.7, 7.27, 0.67, 1.69, 1.6, 6.73, 1.9, 7.74, 0.84), PROD_CODE = c(70, 590, 231, 81, 587, 887, 894, 405, 677, 635, 93, 433, 81, 528, 289, 935, 680, 471, 471, 254), PROD_CODE_10 = c(163, 171, 1, 130, 196, 70, 160, 34, 16, 82, 52, 22, 130, 84, 68, 160, 152, 195, 195, 85), PROD_CODE_20 = c(10, 14, 1, 70, 28, 49, 10, 40, 35, 53, 43, 36, 70, 54, 34, 10, 7, 28, 28, 54), PROD_CODE_30 = c(26, 27, 1, 23, 3, 11, 26, 7, 5, 13, 8, 5, 23, 14, 22, 26, 26, 3, 3, 14), PROD_CODE_40 = c(2, 2, 1, 2, 3, 5, 2, 3, 3, 5, 3, 3, 2, 5, 1, 2, 2, 3, 3, 5), CUST_CODE = c(1, 1, 650, 761, 872, 983, 1094, 1094, 1205, 1316, 1316, 1316, 1316, 1316, 1427, 1427, 2, 113, 113, 224), CUST_PRICE_SENSITIVITY = c(1, 1, 2, 2, 1, 3, 2, 2, 2, 1, 1, 1, 1, 1, 3, 3, 1, 3, 3, 1), CUST_LIFESTAGE = c(3, 3, 1, 3, 4, 1, 1, 1, 3, 3, 3, 3, 3, 3, 3, 3, 1, 5, 5, 2), BASKET_ID = c(1, 1112, 1864, 1975, 2086, 2197, 2308, 2419, 2530, 2, 113, 224, 335, 446, 557, 668, 779, 890, 1001, 1113), BASKET_SIZE = c(1, 3, 3, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 2, 3, 2, 2, 2, 3), BASKET_PRICE_SENSITIVITY = c(2, 2, 2, 2, 2, 3, 2, 2, 1, 2, 2, 1, 2, 2, 1, 1, 1, 3, 3, 1), BASKET_TYPE = c(1, 2, 2, 1, 3, 1, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2), BASKET_DOMINANT_MISSION = c(1, 1, 1, 1, 1, 3, 3, 3, 2, 1, 1, 2, 1, 4, 1, 3, 1, 2, 1, 3), STORE_CODE = c(278, 278, 11, 169, 533, 271, 185, 185, 333, 358, 358, 358, 358, 358, 432, 355, 528, 22, 22, 96), STORE_FORMAT = c(1, 1, 2, 1, 3, 1, 2, 2, 1, 1, 1, 1, 1, 1, 4, 1, 1, 2, 2, 4), STORE_REGION = c(5, 5, 9, 3, 7, 3, 2, 2, 10, 5, 5, 5, 5, 5, 2, 6, 4, 11, 11, 9)), .Names = c("SHOP_DATE", "SHOP_WEEKDAY", "SHOP_HOUR", "QUANTITY", "SPEND", "PROD_CODE", "PROD_CODE_10", "PROD_CODE_20", "PROD_CODE_30", "PROD_CODE_40", "CUST_CODE", "CUST_PRICE_SENSITIVITY", "CUST_LIFESTAGE", "BASKET_ID", "BASKET_SIZE", "BASKET_PRICE_SENSITIVITY", "BASKET_TYPE", "BASKET_DOMINANT_MISSION", "STORE_CODE", "STORE_FORMAT", "STORE_REGION"), na.action = structure(c(1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L, 11L, 12L, 13L, 14L, 15L, 16L, 17L, 18L, 19L, 20L, 21L, 22L, 23L, 24L, 25L, 26L, 27L, 28L, 29L, 30L, 31L, 32L, 33L, 34L, 35L, 36L, 37L, 38L, 39L, 40L, 41L, 42L, 43L, 44L, 45L, 46L, 47L, 48L, 49L, 50L, 51L, 52L, 53L, 54L, 55L, 56L, 57L, 58L, 59L, 60L, 61L, 62L, 63L, 64L, 65L, 66L, 67L, 68L, 69L, 70L, 71L, 72L, 73L, 74L, 75L, 76L, 77L, 78L, 79L, 80L, 81L, 82L, 83L, 84L, 85L, 86L, 87L, 88L, 89L, 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Ich habe versucht, in Ihrem 'te' zu lesen, aber es fehlt etwas, eine Klammer vielleicht? Auch ein wenig verwirrt von Ihrem Problem. Erwähnen Sie einfach, Daten mit Spaltennamen wie 'te [," Spaltenname "]' abzurufen? Das wäre im Wesentlichen "var_name =" column_name "; te [, var_name] ' –
Das hat funktioniert! Grundsätzlich musste ich das '==' außerhalb der Klammern nehmen: 'te [, target] == x'. –