Repeat copies of array elements (2024)

Syntax Description Examples Repeat Vector Elements Repeat Matrix Elements Repeat Matrix Columns Combine Vector Elements Input Arguments v — Input element scalar | vector n — Number of times to repeat each element scalar | vector A — Input array matrix | multidimensional array r1,...,rN — Repetition factors for each dimension (as separate arguments) scalars | vectors Output Arguments u — Output vector vector B — Output array matrix | multidimensional array Extended Capabilities Tall Arrays Calculate with arrays that have more rows than fit in memory. C/C++ Code Generation Generate C and C++ code using MATLAB® Coder™. GPU Code Generation Generate CUDA® code for NVIDIA® GPUs using GPU Coder™. Thread-Based Environment Run code in the background using MATLAB® backgroundPool or accelerate code with Parallel Computing Toolbox™ ThreadPool. GPU Arrays Accelerate code by running on a graphics processing unit (GPU) using Parallel Computing Toolbox™. Distributed ArraysPartition large arrays across the combined memory of your cluster using Parallel Computing Toolbox™. Version History See Also MATLAB Command Americas Europe Asia Pacific

v = [1 2 3 4];u = repelem(v,3)

u = 1×12 1 1 1 2 2 2 3 3 3 4 4 4

u = repelem(v,[2 2 3 3])

u = 1×10 1 1 2 2 3 3 3 4 4 4

A = [1 2; 3 4]

A = 2×2 1 2 3 4

B = repelem(A,3,2)

B = 6×4 1 1 2 2 1 1 2 2 1 1 2 2 3 3 4 4 3 3 4 4 3 3 4 4

A = [1 2; 3 4]

A = 2×2 1 2 3 4

B = repelem(A,1,[2 3])

B = 2×5 1 1 2 2 2 3 3 4 4 4

A = [1; 3; 5];B = [2; 4];

T = [repelem(A,numel(B)) repmat(B,numel(A),1)]

T = 6×2 1 2 1 4 3 2 3 4 5 2 5 4

T = combinations(A,B)

T=6×2 table A B _ _ 1 2 1 4 3 2 3 4 5 2 5 4