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
2 Comments
Ted Shultz
on 21 Aug 2019
Do you not want to also get '2018'? What rule would the code use to exclude this?
Adam
on 21 Aug 2019
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.
Accepted Answer
Stephan
on 21 Aug 2019
Edited: Stephan
on 21 Aug 2019
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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