MATLAB: How to find the exact location of a word in a string

cellmachine learningstring

I have a string that 'chemical engineering is a challenge for electrical engineer'. I used to use 'strfind' function to find the exact location of the word‘engineer'. However, there is a problem that word engineering is also included in my results. How can i just get the location of word 'engineer' instead of 'engineering'.

 list='chemical engineering is a challenge for electrical engineer';
 temp=findstr(list,'engineer')

The result is

temp =
      10    52

Best Answer

This regexp call will pick up only ‘engineer’:

Str = 'chemical engineering is a challenge for electrical engineer';
idxs = regexp(Str, 'engineer\>')
idxs =
    52

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MATLAB: Function to capitalize first letter in each word in string but forces all other letters to be lowercase

str='this is a tEST';
str=lower(str)
idx=regexp([' ' str],'(?<=\s+)\S','start')-1
str(idx)=upper(str(idx))

MATLAB: Replacing only certain instances of text within matlab character array

Method One: split the string

>> str = '___6002__6002___6002___6002__';
>> idx = regexp(str,'6002','once','end');
>> strcat(str(1:idx),strrep(str(idx+1:end),'6002','0'))
ans =
___6002__0___0___0__

Method Two: use a placeholder

>> str = '___6002__6002___6002___6002__';
>> str = regexprep(str,'6002','\b','once');
>> str = strrep(str,'6002','0');
>> regexprep(str,'\b','6002')
ans =
___6002__0___0___0__

Note that the original string must not contain \b.

Method Three: dynamic regular expression

>> str = '___6002__6002___6002___6002__';
>> regexprep(str,'(.*?6002)(.*)','$1${strrep($2,''6002'',''0'')}')
ans =
___6002__0___0___0__

Best Answer

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MATLAB: Function to capitalize first letter in each word in string but forces all other letters to be lowercase

MATLAB: Replacing only certain instances of text within matlab character array

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