To append two or more vectors into a single list or combine multiple vectors in R, you can use either the combine function c() or append() function. In this article, I will explain examples of using these two methods to combine multiple vectors in R.
Let’s create the three character vectors to use, I will define them as vec1, vec2, and vec3.
# Create vectors to append
vec1 = c('sai','ram','deepika','sahithi')
vec2 = c('kumar','scott','Don','Lin')
vec3 = c('Ram','Denis')
1. R Combine Two Vectors using c()
By using combine function c() you can append two vectors into a single vector in R. This function takes two vectors as an argument and returns the combined vector. The following example combines the elements from vec1 and vec2 objects into a single vector vec4.
Here c() is a combined function from the base package that can be used to combine lists, vectors, and other objects. These base functions are default available with the R installation and automatically loaded to the program.
# combine two vectors
vec4 <- c(vec1,vec2)
print(vec4)
Yields below output.
2. Combine Two Vectors using append()
Alternatively, you can also use append() to get two vectors into a single vector in R. This function also takes two vectors as an argument and returns the combined vector.
# combine two vectors
vec4 <- append(vec1,vec2)
print(vec4)
Yields the same output as above.
3. Combine Multiple Vectors using append()
Finally by using the append() let’s combine multiple vectors into a single vector in R. The below examples combine elements from vec1, vec2 and vec3 into a single vector vec4.
# combine multiple vectors
vec4 <- c(vec1,vec2,vec3)
print(vec4)
vec4 <- append(vec1,vec2,vec3)
print(vec4)
Yields below output.
4. Complete Example
Following is a complete example of appending two or multiple vectors.
# create vectors
vec1 = c('sai','ram','deepika','sahithi')
vec2 = c('kumar','scott','Don','Lin')
vec3 = c('Ram','Denis')
# combine two vectors
vec4 <- c(vec1,vec2)
print(vec4)
# combine two vectors
vec4 <- append(vec1,vec2)
print(vec4)
# combine multiple vectors
vec4 <- c(vec1,vec2,vec3)
print(vec4)
vec4 <- append(vec1,vec2,vec3)
print(vec4)
5. Conclusion
In this article, you have learned how to append two vectors into a single vector using the R c() combine function and append() function from R base package.
