在R中摆脱重复属性的行 [英] Get rid of rows with duplicate attributes in R
问题描述
我有一个大数据框,其中列有:
I have a big dataframe with columns such as:
ID, time, OS, IP
该数据帧的每一行对应一个条目。在某些 ID 的数据帧内存在几个条目(行)。我想摆脱这些多行(显然,其他属性对于相同的ID会有所不同)。或者放不同:我只想为每个ID单独一个条目(行)。
Each row of that dataframe corresponds to one entry. Within that dataframe for some IDs several entries (rows) exist. I would like to get rid of those multiple rows (obviously the other attributes will differ for the same ID). Or put different: I only want one single entry (row) for each ID.
当我使用唯一
ID列,我只接收级别(或每个唯一ID),但是我想保留其他属性。
我试图使用 apply(x,2,unique(data $ ID))
,但这也不行。
When I use unique
on the ID column, I only receive the levels (or each unique ID), but I want to keep the other attributes as well.
I have tried to use apply(x,2,unique(data$ID))
, but this does not work either.
推荐答案
subset(data,!duplicated(data$ID))
应该做的伎俩
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