坚持在R中创建循环

Question

我有一个10个客户的交易数据集，从01-01-2013到2016年11月1日。我手动分割每个客户的数据集，如下所示，但我找不到如何创建循环来执行此操作。什么是最好的循环？

customer_1 <- transactions[1:47,]
customer_2 <- transactions[48:94,]
customer_3 <- transactions[95:141,]
customer_4 <- transactions[142:188,]
customer_5 <- transactions[189:235,]
customer_6 <- transactions[236:282,]
customer_7 <- transactions[283:329,]
customer_8 <- transactions[330:376,]
customer_9 <- transactions[377:423,]
customer_10 <- transactions[424:468,]

Answer 1

您应该使用拆分来拆分数据框：

out <- split( transactions, f = transactions$customer_id)

然后，如果您想按客户分配变量，则可以执行

counter = 1
for (elt in out){
  assign(paste("customer", counter, sep ="_"), elt)
  counter <- counter + 1
}

哪个会创建变量customer_1，customer_2 ....