CODEWITHSUNDEEP
r
Achal Neupane
Achal Neupane

Reputation: 5729

cbind and combine in R

I am little confused here: I have this variable gene <-c("IDH3G", "SSR4" ). when I do c(gene,gene), I get: "IDH3G" "SSR4" "IDH3G" "SSR4", but when I do cbind (gene, gene), I get : 

  gene    gene   
[1,] "IDH3G" "IDH3G"
[2,] "SSR4"  "SSR4"

Shouldn't this be same as what we get from c(gene,gene)? Can someone please clarify?

Upvotes: 0

Views: 391

Answers (1)

user1436187
user1436187

Reputation: 3376

The c function combine the vectors and generate a vector character.

class(c(gene,gene)) 
[1] "character"

but cbind (gene, gene) consider the gene as a vertical vector and combine them to make a matrix:

 class(cbind (gene, gene))
[1] "matrix"

From R help ?cbind:

Combine R Objects by Rows or Columns

Description:

 Take a sequence of vector, matrix or data-frame arguments and
 combine by _c_olumns or _r_ows, respectively.  These are generic
 functions with methods for other R classes.

Upvotes: 3

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