New string based on parts of old string

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DavidL88
DavidL88 on 14 Dec 2021
Commented: DavidL88 on 14 Dec 2021
How do I get new str from this old string? All the strings are in this format. Is there a way to extract based on the position from '(' and after '|'?
OldStr1 = 'Extract clusters: PR (2 files) | DG_MD_CG_22'
OldStr2 = 'Extract clusters: OR (2 files) | AG_MD_HH_CG_HH_22'
NewStr1 = 'DG_MD_CG_22_PR'
NewStr2 = 'AG_MD_HH_CG_HH_22_OR'

Accepted Answer

Voss
Voss on 14 Dec 2021
OldStr1 = 'Extract clusters: PR (2 files) | DG_MD_CG_22';
OldStr2 = 'Extract clusters: OR (2 files) | AG_MD_HH_CG_HH_22';
NewStr1 = construct_new_str(OldStr1)
NewStr1 = 'DG_MD_CG_22_PR'
NewStr2 = construct_new_str(OldStr2)
NewStr2 = 'AG_MD_HH_CG_HH_22_OR'
function new_str = construct_new_str(str)
idx0 = find(str == ':',1,'last');
idx1 = find(str == '(',1,'last');
idx2 = find(str == '|',1,'last');
new_str = [str(idx2+2:end) '_' str(idx0+2:idx1-2)];
end

More Answers (1)

Steven Lord
Steven Lord on 14 Dec 2021
I would use the extract* functions listed in the Join and Split section of the Characters and Strings category page in the documentation.
s = 'hocus pocus'
s = 'hocus pocus'
h = extractBefore(s, ' ')
h = 'hocus'
p = extractAfter(s, ' ')
p = 'pocus'

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