Change Vector Type keep Names

r convert list to vector
r convert list to numeric vector
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as data frame keep row names
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r unlist list of lists

Sorry, if this is a duplicate. I could not find an answer.

I have a named vector (logical in this case):

a <- c("a" = TRUE, "b" = TRUE, "c" = FALSE, "e" = FALSE)

a     b     c     e 

If I turn it into an integer, the names are gone.

> as.integer(a)
[1] 1 1 0 0

How can I prevent this?

You can use the following code

a <- +a

such that

> a
a b c e 
1 1 0 0 

keep column names when applying as.vector to a matrix slice , You can convert the matrix to a data frame, slice it, and use unlist to make the slice into a named vector: B <- my.slice� On the second line, R reports that the named vector has an attribute containing names and reports that the first few elements are “Africa”, “Antarctica”, “Asia”, and “Australia”. Because each element in the vector has a value as well as a name, now you can subset the vector by name.

You can preserve the attributes of a by using []

a[] <- as.integer(a)
#a b c e 
#1 1 0 0

Flatten Lists, Given a list structure x , unlist simplifies it to produce a vector which contains all the By default, unlist tries to retain the naming information present in x . Vectors will be coerced to the highest type of the components in the hierarchy NULL� You cannot change his name, but you can use a name other than Vector if it has two syllables and ends in -ter / -tor such as Hector, Dexter, Lecter, Lester, Victor, Hipster, Master, and so on. Each of those has worked for me when I've tried them.

Some alternatives

class(a) <- "integer"
a b c e 
1 1 0 0 


ifelse(a, 1L, 0L)
a b c e 
1 1 0 0 

Convert Data to Appropriate Type, ## S3 method for class 'list' type.convert(x, ) Arguments. x. a vector, matrix, array , data frame� You can check what’s in both objects by typing the name on the command line and pressing Enter. Now you can change the vector baskets.of. G ranny: > baskets.of.Granny[4] <- 11 > baskets.of.Granny [1] 12 4 5 11 9 3. If you make a mistake, simply assign the vector G ranny.copy back to the object baskets.of.Granny, like this:

Vectors and lists, logical vector: keep elements of x for which something is TRUE and drop is a named vector and the elements whose names are specified in something are kept Even though R's vectors have a specific type, it's quite easy to convert them to� R's named vectors are incredibly handy, however, I want to combine two vectors which contain the estimates of coefficients and the standard errors for those estimates, and both vectors have the same

Converting between vector types, Converting between vector types. Problem. You want to convert between numeric vectors, character vectors, and factors. In this tutorial, we will learn how to change column name of R Dataframe. Column names of an R Dataframe can be acessed using the function colnames().You can also access the individual column names using an index to the output of colnames() just like an array.

Named Vector Members, An R tutorial on how to retrieve vector slices by listing the names of the vector members in a character string vector. For clarity for others on the thread, Lifetime Access serial number change requests were honored until the release of Vector firmware 1.7, as a courtesy for those with screen issues. They are no longer able to be transferred.