There are multiple ways to concatenate or merge elements of the vector into a string in R either by separating with space or any delimiter. Use the paste() function to merge elements of a vector into a string. It provides two optional parameters to change the behavior of the merge result.

Also, I will use `stri_paste()`

function from `stringi`

package to merge character elements from vector into a single string.

## 1. Quick Examples Merge Vector into String

The following are quick examples of how to merge elements of the vector into the string.

```
# Quick examples
# Using paste() function
v <- c('A','B','C','D')
print(v)
print(paste(v,collapse=' '))
print(paste(v))
# With 2 vectors
v <- c('A','B','C','D')
v2 <- c('X','Y','Z')
print(paste(v,v2,collapse='-'))
print(paste(v,v2,sep='|'))
print(paste(v,v2,sep='|',collapse='-'))
print(paste(v,v2))
# cbin()
v <- c('A','B','C')
v2 <- c('X','Y','Z')
print(cbind(v,v2))
# rbind()
v <- c('A','B','C')
v2 <- c('X','Y','Z')
print(rbind(v,v2))
# do.call()
do.call(paste, c(as.list(v), sep = " "))
```

## 2 Syntax of paste()

Following is the syntax of the paste() function.

```
# Syntax
paste (…, sep = " ", collapse = NULL)
```

**Parameters**

`...`

– one or more input objects to merge.`sep`

– character to separate the values. In order to use`sep`

param, you should use multiple vectors as input.`collapse`

–

## 3. Usage paste() to Merge Vector Elements into a string

The `paste()`

function in R merges the string elements from the vector to a string. To separate the string elements from a single vector use the collapse param with the delimiter. And to separate the elements from multiple vectors use `sep`

param. Let’s create a character vector by using combined function c(). The following example merges all values from a vector into a single string with the values separated by space.

```
#Using paste()
v <- c('A','B','C','D')
print(paste(v,collapse=' '))
```

Yields below output. By not using collapse it returns the original vectors without any changes.

```
# Output
[1] "A B C D"
```

## 4. Merge Two Vectors into a String

When you use two or more (multiple) R vectors as arguments to `paste()`

function it merges the string elements from all vectors column-wise by space separator and each position of the vector by collapse character. It merges the first position of two vectors, the second position of two vectors, and so on.

```
# Other examples
v <- c('A','B','C','D')
v2 <- c('X','Y','Z')
print(paste(v,v2,collapse='-'))
```

Yields below output.

```
# Output
[1] "A X-B Y-C Z-D X"
```

## 5. Merge Vector by using sep Param

If you wanted to merge elements from the vector by position with a separator use sep param.

```
# Using sep Param
v <- c('A','B','C','D')
v2 <- c('X','Y','Z')
print(paste(v,v2,sep='-'))
print(paste(v,v2,sep='-',collapse='-'))
```

Yields below output.

```
# Output
> print(paste(v,v2,sep='|'))
[1] "A|X" "B|Y" "C|Z" "D|X"
> print(paste(v,v2,sep='|',collapse='-'))
[1] "A|X-B|Y-C|Z-D|X"
> print(paste(v,v2))
[1] "A X" "B Y" "C Z" "D X"
```

## 6. Using do.call()

Alternatively, you can also use `do.call()`

function to merge vector elements into a string. Use `sep`

to separate the string in vector by a delimiter.

```
# Using do.call()
do.call(paste, c(as.list(v), sep = " "))
```

## 7. stri_paste() to merge elements

Use `stri_paste()`

function from `stringi`

package to merge vector elements into strings in R. This function also takes `collapse`

param to separate the strings by character. In order to use this package first you to install r package and load it by using `library()`

function.

```
# Load stringi
library('stringi')
stri_paste(v, collapse='')
```

## 3. Using cbind()

To merge string vector column-wise use `cbind()`

function.

```
#cbin()
v <- c('A','B','C')
v2 <- c('X','Y','Z')
print(cbind(v,v2))
```

Yields below output.

```
# Output
v v2
[1,] "A" "X"
[2,] "B" "Y"
[3,] "C" "Z"
```

## 4. Using rbind()

Use `rbind()`

function to concatenate string vectors by rows

```
#rbind()
v <- c('A','B','C')
v2 <- c('X','Y','Z')
print(rbind(v,v2))
```

Yields below output.

```
# Output
[,1] [,2] [,3]
v "A" "B" "C"
v2 "X" "Y" "Z"
```

## Conclusion

In this article, you have learned how to merge string elements from the vector into a string in R by using the paste(), cbind(), and rbind() functions. Also learned how to use stri_paste() from `stringi`

package. You can also find this example at Github R Programming Examples Project.

## Related Articles

- Explain Character Vector in R?
- How to Get Vector Length in R?
- Add or Append Element to Vector in R?
- How to Remove NA from Vector?
- How to Create a Vector in R?
- How to Create a DataFrame From Vectors?
- How to Create Empty Vector in R?
- Create Character Vector in R?
- How to Convert Vector to List in R?
- How to Convert List to Vector in R?
- How to Concatenate Vector in R?
- How to Subset Vector in R?
- How to Sort Vector in R?
- How to Convert List to String?
- How to Remove Values from R Vector?
- How to Remove Duplicates from Vector in R?
- Remove character from string in r
- How to concatenate the strings in R?
- Remove all white space characters in R