str2num (MATLAB Function Reference)

MATLAB Function Reference

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Examples See Also

String to number conversion

x = str2num('str')

x = str2num('str')

converts the string str, which is an ASCII character representation of a numeric value, to MATLAB's numeric representation. The string can contain:

Digits
A decimal point
A leading + or - sign
A letter e preceding a power of 10 scale factor
A letter i 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

[] (special characters) Build arrays

; (special characters) End array rows; suppress printing; separate statements.

hex2num Hexadecimal to double number conversion

num2str Number to string conversion

sparse Create sparse matrix

sscanf Read string under format control

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