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How can I use strcmp (or something else) to compare to multiple strings at once?

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Julian Reed
Julian Reed 2015-9-18
回答： Titus Edelhofer 2015-9-18
I want to compare all the strings in a cell (messages) to a list of string and return true if it matches any of them.
It should match the function of:
trialSplitPoints = find(strcmp('TRIALID 1',messages));
but for 'TRIALID 1' through 'TRIALID 8'.

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采纳的回答

Titus Edelhofer
Titus Edelhofer 2015-9-18
Hi,
apart from Walter's method there are two additional:
  1. Use regexp (unfortunately here I can't help, I've never really understood regular expressions)
  2. You can do partial comparison:
trialSplitPoints = find(strncmp(messages, 'TRIALID', length('TRIALID')));
Note, it's strncmp, not strcmp.
Titus

更多回答（1 个）

Walter Roberson
Walter Roberson 2015-9-18
tf = ismember(messages, {'TRIALID 1', 'TRIALID 2', 'TRIALID 3', ... 'TRIALID 8'})
tf will be an array the same shape as "messages", indicating for each cell array element whether it matches any of the listed items.

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