Accessing Vector/Matrix Elements
How to access vector and matrix elements in Julia and R? The following table translates the most common Julia commands into R language.
Julia  R  

Access one element  
A[2, 2] 
A[2, 2] 

Access specific rows  
A[1:4, :] 
A[1:4,] 

Access specific columns  
A[:, 1:4] 
A[,1:4] 

Concatenate vertically 

A = [[1 2]; [1 2]] 
A = rbind(c(1,2),c(1,2)) 

Remove a row 

A[[1, 2, 4], ] 
A[3, ] 

Diagonals of matrix 

diag(A) 
diag(A) 

Get dimensions of matrix 

size(A) 
dim(A) 
Complete JuliaR Cheatsheet
1) Creating Vectors
2) Creating Matrices
3) Creating Random Numbers
4) Manipulating Vectors and Matrices
5) Accessing Vector/Matrix Elements
5 thoughts on “JuliaR Cheatsheet – Accessing Vector/Matrix Elements”