How to sort data within groups and count the elements of each group in R?
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Possible Duplicate:
How to sort a dataframe by column(s) in R
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所有人：我想使用r对组内的数据进行排序。例如：数据是：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | geneID Nr.annotation CL1002 uncharacterized CL1002 uncharacterized CL1002 uncharacterized CL1002 uncharacterized CL1002 uncharacterized CL1002 uncharacterized CL1019 PREDICTED: CL1019 PREDICTED: CL1019 predicted CL1019 PREDICTED: CL1019 PREDICTED: CL1019 predicted CL1019 predicted CL1019 hypothetical CL10246 unnamed CL10246 predicted CL10246 unnamed CL10246 unnamed CL10246 unnamed CL10246 unnamed CL10246 unnamed CL1064 octicosapeptide/Phox/Bem1p CL1064 octicosapeptide/Phox/Bem1p CL1064 serine/threonine CL1064 serine/threonine CL1064 serine/threonine CL1064 serine/threonine |
这是原始数据。请复制并使用以下代码：
1 | read.table("clipboard",strip.white=T,header=T) |
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然后，我该怎么做？排序后，我希望结果如下：
1 2 3 4 5 6 7 8 9 10 | geneID Nr.annotation CL1002 PREDICTED: CL1002 uncharacterized 4 CL1019 PREDICTED: 6 CL1019 hypothetical 1 CL1019 uncharacterized 1 CL10246 predicted 1 CL10246 unnamed 6 CL1064 octicosapeptide/Phox/Bem1p 2 CL1064 serine/threonine 4 |
您可以使用
1 2 3 | library(plyr) arrange(DF,geneID, Nr.annotation) |
(第二步，您的示例输出不太有意义。你怎么得到一个组合
埃多克斯1〔2〕