MATLAB Function Reference

str2num

Convert string to number

Syntax

• x = str2num('str')
  

Description

x = str2num('str') converts the string str, which is an ASCII character representation of a numeric value, to numeric representation. The string can contain

• Digits
• A decimal point
• A leading + or - sign
• A letter e or d preceding a power of 10 scale factor
• A letter i or j indicating a complex or imaginary number.

The str2num function can also convert string matrices.

Examples

str2num('3.14159e0') is approximately .

To convert a string matrix,

• str2num(['1 2';'3 4'])
  
  ans =
  
       1     2
       3     4
  

See Also

num2str, hex2num, sscanf, sparse, special characters

str2mat

strcat

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