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length of a string

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William
William 2011-9-29
评论： Vijay Kamble 2019-7-4
Is there a function that can return the length of a string? I have tried using size. but for some reason it is not going so well.
  1 个评论
Jan
Jan 2011-9-29
Please post an exact error description than "is not going well" in the future. Posting the error message is more helpful.

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采纳的回答

Fangjun Jiang
Fangjun Jiang 2011-9-29
str='abcdefe'
size(str)
length(str)
numel(str)

更多回答（2 个）

Johannes Kalliauer
Johannes Kalliauer 2018-1-11
If you have string not a char then you have to use a different command to get the number of chars: strlength
str=string('abcdefe')
strlength(str)
or you can convert the string to a char and then deterimise the length with the code posted by @Fangjun Jiang
str=string('abcdefe')
chr=char(str)
size(chr,2)
length(chr)
numel(chr)
but if you are interested in the number of lines use:
strSplited = splitlines(stringWithLinebreaks);
size(strSplited,1)
length(strSplited)
numel(strSplited)
  1 个评论
Walter Roberson
Walter Roberson 2018-1-11
Note that in 2011 when the question was originally asked, the string object did not exist and "string" often referred to a character vector.
I think it would have been better if they had used a different datatype name to avoid confusion.

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Daniel Shub
Daniel Shub 2011-9-29
Have you created a variable called size? what do you get with
which size
It should be something like ../matlab/r2011a/toolbox/matlab/elmat/size

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