filter string in the string
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Hello,
I am quietly new with matlab script.
I have a string as example.
str = 'this matlab is a good software, it is a version 9.4 which is equal to 2018a'
objective, I want to filter the number from that string ( so it is "9.4").
Note that I cannot see that number. All i want is to scan that number and show in my workspace.
so the scribt should read the text and identify the number of the version and show in my workspace.
I appreciate your help.
Regards,
LN
댓글 수: 2
Ted Shultz
2019년 8월 21일
Do you not want to also get '2018'? What rule would the code use to exclude this?
Adam
2019년 8월 21일
doc regexp
should help do this. It takes a bit of getting used to parameterising regular expressions though. There are likely simpler ways depending how robust you want it to be.
채택된 답변
Stephan
2019년 8월 21일
편집: Stephan
2019년 8월 21일
str = 'this matlab is a good software, it is a version 9.4 which is equal to 2018a'
str = char(str);
idx = find((uint8(str)>=48 & uint8(str)<=57) | uint8(str)==46 | uint8(str)==32);
res = split(string(str(idx))," ");
res(res=="")=[]
The second line makes sure that it also works with:
str = "this matlab is a good software, it is a version 9.4 which is equal to 2018a"
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