R remove duplicated columns

Question

I have data like this

     X3    X4    X5    X6     X7   X24   X25   X26    X39    X40    X41    X54    X55    X56    X69    X70    X71
1 step1 step2 step3 step4 step10 step2 step3 step4 step10 step10 step10 step10 step10 step10 step10 step10 step10

And I want remove duplicated columns. So desired output is

  X3    X4    X5    X6     X7
1 step1 step2 step3 step4 step10

score 9 · Accepted Answer · answered Feb 23 '18 at 09:06

9

 df[!duplicated(as.list(df))]
     X3    X4    X5    X6     X7
1 step1 step2 step3 step4 step10

answered Feb 23 '18 at 09:06

Onyambu

67,392
3
24
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score 0 · Answer 2 · answered Feb 23 '18 at 08:58

0

Try this:

df <- read.table(text = "X3    X4    X5    X6     X7   X24   X25   X26    X39    X40    X41    X54    X55    X56    X69    X70    X71
1 step1 step2 step3 step4 step10 step2 step3 step4 step10 step10 step10 step10 step10 step10 step10 step10 step10",
                 header = TRUE)

df[!duplicated(lapply(df, summary))]
#Output
#     X3    X4    X5    X6     X7
#1 step1 step2 step3 step4 step10

answered Feb 23 '18 at 08:58

nghauran

6,648
2
20
29

In my data set the output of your code is X3 1 step1 – little girl Feb 23 '18 at 09:12

R remove duplicated columns

2 Answers2