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convert a string vector to a vector of numbers

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googo
googo 2013-4-16
Hello,
suppose I have a vector of string [1 2 3 4] and i want to change it to a vector of nmbers to do a numeric caculations, How can I do it? Thank's!
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Walter Roberson
Walter Roberson 2013-4-16
Are the '[' and ']' in the string? Are the numbers only integers or possibly floating point ?
googo
googo 2013-4-16
string=['1' '2' '3' '4'] and I want to change it to : a = [1 2 3 4]

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回答（1 个）

Friedrich
Friedrich 2013-4-16
编辑：Friedrich 2013-4-16
Hi,
as long there are no [] in the string use textscan:
textscan('1 2 3 4 6.3','%f','delimiter',' ')
In the case there are use strrep to remove the [ or ] before calling textscan.
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Walter Roberson
Walter Roberson 2013-4-16
You have
t(i,n+1)=num2str(c);
the destination t(i,n+1) is a single character. The number 10 and upwards require two (or more) characters to represent as a string. Therefore if c reached 10 (occurrences) the code would fail. This suggests that you have a code design problem.
googo
googo 2013-4-16
Thank you... I'll try to find a way to fix it..

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