How to index when using colnames to create a list with all colnames in R(data frames)

Question

I have a problem regarding the following issue:

I need all columnames aport from V1 till the end V200 in a list, but I don't know how and where to insert the index into these lines of code. Like this, it gives me a list of all columnames but I don't need the first two. Please help, thank you!

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Marco_CH · Accepted Answer · 2022-01-24T17:34:50.303

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Update, once more, thanks to akrun for a better/shorter solution:

names(df)[3:ncol(df)]

For dataframes there is no need to use colnames, it's the same like names. The difference is only in case you're dealing with matrices

edited Jan 24 '22 at 17:34

answered Jan 24 '22 at 14:43

Marco_CH

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Thank you, I appreciate your help. – Student_1899 Jan 24 '22 at 15:34
Do you have some good resources regarding R and indexing, working with data frames etc. could be a book, website, tutorials or so for me ? – Student_1899 Jan 24 '22 at 15:35
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I just checked. I'm having [this book (R for data science)](https://r4ds.had.co.nz/index.html) in German, but in English it might be even better. In general, the O'Reilly books are mostly very good and the mentioned book give you a very good overview. – Marco_CH Jan 24 '22 at 15:47
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PS: or in general youtube videos. If your searching for "R tutorial", you'll find many good results. – Marco_CH Jan 24 '22 at 15:49
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`3:ncol(df)` is shorter – akrun Jan 24 '22 at 17:22
thanks akrun (like many times before), I've updated it. – Marco_CH Jan 24 '22 at 17:25

How to index when using colnames to create a list with all colnames in R(data frames)

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