String to Double Conversion in MATLAB

This page provides MATLAB source code for converting a string to a double number, similar to the str2double function. The str2double MATLAB function converts a string input to a double-precision output value.

output = str2double(str1)

If str1 does not contain a valid scalar value, the function returns NaN (Not a Number).

str1 can be a single element or an array.

Example:

str2double({'2.50' '4.222'})

Another Example:

str1 = '1.25 + 50i'
output = str2double(str1)

This would produce the following output:

output =

1.2500 +50.0000i