num2str

Returns a string or a string array after converting the input x. Input x can be a scalar, complex number, or matrix. Optional arguments, precision, can be used to format the output, R, by specifying the number of significant digits. Valid values of R are positive integers.

Syntax

R = num2str(x)

R = num2str(x, precision)

R = num2str(x, format)

Inputs

x: Type: scalar | complex number | matrix
format: Optional argument specifying the format in R. format must be a valid numeric type format such as the format used in the printf command for numerical values.; Type: string
precision (optional): Optional argument specifying the precision in R.; Type: Finite, positive integer

Outputs

R: Type: string | mat

Examples:

Scalar to string:

R = num2str(2.345e+5)

R = 234500

Scalar to string example with precision:

R = num2str(0.64247255268, 6)

R = 0.642473

Complex to string:

R = num2str(24 + 7i)

R = 24+7i

Matrix to string:

R = num2str([123, 456, 789; 45.56, 78.98, 45.94])

R =
123    456    789
45.56  78.98  45.94

Scalar to formatted string:

R = num2str(pi, '%1.7f value')

R = 3.1415927 value