Find and convert negative number strings
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I need to find a negative number between terms A and B in a string. The following code find the 1x5 char '-20', but not as number -20. So I can not use it directly to for continue calculation. What is the easiest way to handle this?
cell2mat(regexp(SDstring,'(?<=Reference Level\d*).*?(?= dBm)','match'));
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Guillaume
2018년 3월 23일
There are two problems:
- cell2mat which is never going to convert a string of numbers into an actual number. Stephen's answer of using str2double for that is correct
- the correct regular expression to detect the number. To design the correct regular expression we need to know exactly what is allowed and what isn't. Is the number always an integer or can it be decimal. Is exponential notation (e.g 1.2e5) a possibility? Is the decimal separator always '.'? Can the number include thousands separator ,? etc.
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