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iscolumn

Determine if input is column vector

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Syntax

tf = iscolumn(V)

Description

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

example

Examples

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Open Live Script

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

V = rand(5,1);
tf = iscolumn(V)
tf = logical
   1

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

Vt = V';
tf = iscolumn(Vt)
tf = logical
   0
Open Live Script

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

V = 5;

Determine if the scalar V is also a column vector.

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

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

V = 'Hello, World!';
tf = iscolumn(V)
tf = logical
   0

Check the dimension of V by using size. V is a 1-by-13 character vector, which is not a column 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 column vector.

tf = iscolumn(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 iscolumn(V) returns logical 0 (false). For example, an array of size N-by-1-by-2 is not a column vector.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® 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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