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isrow

Determine if input is row vector

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Syntax

tf = isrow(V)

Description

tf = isrow(V) returns logical 1 (true) if V is a row vector. Otherwise, it returns logical 0 (false). A row vector is a two-dimensional array that has a size of 1-by-N, where N is a nonnegative integer.

example

Examples

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Open Live Script

Create a vector. Determine if it is a row vector.

V = rand(5,1);
tf = isrow(V)
tf = logical
   0

Find the conjugate transpose of the vector. Determine if it is a row vector.

Vt = V';
tf = isrow(Vt)
tf = logical
   1
Open Live Script

Create a scalar, which is a 1-by-1 array.

V = 5;

Determine if the scalar V is also a row vector.

tf = isrow(V)
tf = logical
   1
Open Live Script

Create an array of characters. Determine if it is a row vector.

V = 'Hello, World!';
tf = isrow(V)
tf = logical
   1

Check the dimension of V by using size. V is a 1-by-13 character vector, which is also a row vector.

sz = size(V)
sz = 1×2

     1    13

Now create a string scalar by enclosing a piece of text in double quotes.

V = "Hello, World!";

Check if the scalar V is also a row vector.

tf = isrow(V)
tf = logical
   1

Input Arguments

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Input array, specified as a scalar, vector, matrix, or multidimensional array.

Algorithms

  • If the input array V has more than two dimensions, then isrow(V) returns logical 0 (false). For example, an array of size 1-by-1-by-N is not a row vector.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

GPU Code Generation
Generate CUDA® code for NVIDIA® GPUs using GPU Coder™.

HDL Code Generation
Generate VHDL, Verilog and SystemVerilog code for FPGA and ASIC designs using HDL Coder™.

Version History

Introduced in R2010b

See Also

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