How to update comparison expression as the loop updates ?

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kintali narendra 2017-3-7

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https://ww2.mathworks.cn/matlabcentral/answers/328465-how-to-update-comparison-expression-as-the-loop-updates

评论： kintali narendra 2017-3-7

I need to update my comparison expression , I dont know how to do it. All my comparison expressions are stored in a cells.

   stringDAT = 'bat cat can car coat Name CUT ct CAT-scan'
    expression = 'Name'
    startIndex = regexp(stringDAT,expression)

I want the comparison expression need to be updated.

for i = 1:10
expression = value(i)
startIndex = regexp(StringDAT,expression)

where value has 10 different characters stored in form of cell.

thanku all

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KSSV 2017-3-7

What is comparison expression? You have to give an example, your question is not clear.

kintali narendra 2017-3-7

sir , in we use string stored in 'expression' to compare with the data in 'stringDAT' , my question is, How we will update the string in 'expression' as the loop updates. As I have many values to compare.

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Answer 1

KSSV 2017-3-7

0
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https://ww2.mathworks.cn/matlabcentral/answers/328465-how-to-update-comparison-expression-as-the-loop-updates#answer_257604

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stringDAT = 'bat cat can car coat Name CUT ct CAT-scan'
%   expression = 'Name' ;
% startIndex = regexp(stringDAT,expression) ;
value = {'apple' 'bat' 'cat' 'dog' 'car' 'cut' 'CUT'} ;
startIndex = NaN(size(value)) ;
for i = 1:length(value)
    expression = value{i} ;
    idx = regexp(stringDAT,expression) ;
    if ~isempty(idx)
        startIndex(i) = idx ;
    end
end