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本文小編為大家詳細(xì)介紹“R語言的sort()與order()函數(shù)怎么用”,內(nèi)容詳細(xì),步驟清晰,細(xì)節(jié)處理妥當(dāng),希望這篇“R語言的sort()與order()函數(shù)怎么用”文章能幫助大家解決疑惑,下面跟著小編的思路慢慢深入,一起來學(xué)習(xí)新知識吧。
基于sort()或者order對向量元素排序:返回排序后的向量,后者返回原排序后的索引 例如基于向量A操作(A也可以是數(shù)值型): > A=c("A","B","D","C","H","J","E") 1、sort sort(x, decrea...
基于sort()或者order對向量元素排序:返回排序后的向量,后者返回原排序后的索引
例如基于向量A操作(A也可以是數(shù)值型):
> A=c("A","B","D","C","H","J","E")
1、sort
sort(x, decreasing = FALSE, ...)
默認(rèn)升序
> newA1=sort(A) > newA1 [1] "A" "B" "C" "D" "E" "H" "J"
降序:設(shè)置decreasing=T
> newA2=sort(A,decreasing = T) > newA2 [1] "J" "H" "E" "D" "C" "B" "A"
2、order
order(..., na.last = TRUE, decreasing = FALSE, method = c("auto", "shell", "radix"))
默認(rèn)升序,返回索引,基于索引獲取排序值
> order1=order(A) > order1 [1] 1 2 4 3 7 5 6 > A[order1] [1] "A" "B" "C" "D" "E" "H" "J"
降序:設(shè)置decreasing=T
> order2=order(A,decreasing = T) > order2 [1] 6 5 7 3 4 2 1 > A[order2] [1] "J" "H" "E" "D" "C" "B" "A"
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