Convert c(‘a’ ‘c’, ‘b’) to c(‘a’, ‘a’, ‘c’, ‘c’, ‘b’, ‘b’) in R?
给定一个变量向量，变换向量，使每个变量重复
例如，我可以
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1
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sort(rep(c(‘a’, ‘c’, ‘b’)))
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除了我不想对它们进行排序；我希望它返回 c(‘a’, ‘a’, ‘c’, ‘c’, ‘b’, ‘b’)
- 另见?rep。在提出问题之前阅读帮助文件被认为是一种好的做法。
使用 ?rep
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vec <- c(‘a’, ‘b’, ‘c’)
rep(vec, each = 2)
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来源：https://www.codenong.com/4523284/
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