NUM2STR NUM2STR Convert Numbers To Strings

Usage

Converts an array into its string representation.  The general syntax
for this function is

   s = num2str(X)

where s is a string (or string matrix) and X is an array.  By
default, the num2str function uses 4 digits of precision and an 
exponent if required.  If you want more digits of precision, you can 
specify the precition via the form

   s = num2str(X, precision)

where precision is the number of digits to include in the string
representation.  For more control over the format of the output, you 
can also specify a format specifier (see printf for more details).

   s = num2str(X, format)

where format is the specifier string.