Question

This may be like a very small question, but I need some help here.

Lets say I have a data frame (df) in R which reads like this:

    X   Y   Z
Ras 56  89  76
Jyo 76  90  00
Abi 45  88  34
Poo 78  98  54

I wish to give a header to the first column and name it as “Names”, so as to get the following output.

Names   X   Y   Z
Ras 56  89  76
Jyo 76  90  00
Abi 45  88  34
Poo 78  98  54

When I check, it gives me the following headers:

> names(df)[1]
X
> names(df)[2]
Y
> names(df)[3]
Z

So I tried something like,

> names(df)[0] <- "Names"

But that did not do anything. Can anyone help me how do I give this “Names” header using R?

Answer 1

if df is your dataframe, then you would use:

df <- data.frame("names"=rownames(df), df)