'names' attribute must be the same length as the vector

Question

Stuck on an error in R.

    Error in names(x) <- value : 
      \'names\' attribute must be the same length as the vector

What does thi

Answer 1

I have seen such error and i solved it. You may have missing values in your data set. Number of observations in every column must also be the same.

Answer 2

The mistake I made that coerced this error was attempting to rename a column in a loop that I was no longer selecting in my SQL. This could also be caused by trying to do the same thing in a column that you were planning to select. Make sure the column that you are trying to change actually exists.

Answer 3

For me, this error was because I had some of my data titles were two names, I merged them in one name and all went well.

Answer 4

In the spirit of @Chris W, just try to replicate the exact error you are getting. An example would have helped but maybe you're doing:

  x <- c(1,2)
  y <- c("a","b","c")
  names(x) <- y

Error in names(x) <- y : 
  'names' attribute [3] must be the same length as the vector [2]

I suspect you're trying to give names to a vector (x) that is shorter than your vector of names (y).

Answer 5

Depending on what you're doing in the loop, the fact that the %in% operator returns a vector might be an issue; consider a simple example:

c1 <- c("one","two","three","more","more")
c2 <- c("seven","five","three")

if(c1%in%c2) {
    print("hello")
}

then the following warning is issued:

Warning message:
In if (c1 %in% c2) { :
  the condition has length > 1 and only the first element will be used

if something in your if statement is dependent on a specific number of elements, and they don't match, then it is possible to obtain the error you see

Answer 6

I want to explain the error with an example below:

> names(lenses)
[1] "X1..1..1..1..1..3"

names(lenses)=c("ID","Age","Sight","Astigmatism","Tear","Class") Error in names(lenses) = c("ID", "Age", "Sight", "Astigmatism", "Tear", : 'names' attribute [6] must be the same length as the vector [1]

The error happened because of mismatch in a number of attributes. I only have one but trying to add 6 names. In this case, the error happens. See below the correct one:::::>>>>

> names(lenses)=c("ID")
> names(lenses)

[1] "ID"

Now there was no error.

I hope this will help!