count number of occurences of character in string?

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Leor Greenberger
Leor Greenberger 2011-9-25
回答： Dharanee dharan Mani 2020-5-3
Is there a function/method for counting the number of times a specific character occurs in a string? Say
v = '30.44.532.56';
This is obviously nonesense, but I would like to check how many times the decimal point occurs so that I can reject if used with a function I wrote. This value would be input into GUIDE gui I am creating, so this is why it's in string format.

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回答（3 个）

Dharanee dharan Mani
Try using
countnum= count(v,'.');
Leor Greenberger
Leor Greenberger 2011-9-25
I suppose this will actually work.
v = '30.44.532.56';
length(strfind(v,'.'))
Image Analyst
Image Analyst 2011-9-25
numberOfDots = length(find(v=='.'))

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