Undefined function 'clip' for input arguments of type 'logical'. Error in lines (line 3) aa=clip(aa); Error in main (line 81) [fl re]=lines(re);

Question

Praveen kumar 2016-3-17

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/273979-undefined-function-clip-for-input-arguments-of-type-logical-error-in-lines-line-3-aa-clip-aa

回答： Walter Roberson 2016-3-18

function [fl re]=lines(aa)
%Divide text in lines.
aa=clip(aa);
r=size(aa,1);
for s=1:r
    if sum(aa(s,:))==0
        nm=aa(1:s-1,1:end);%First line matrix
        rm=aa(s:end,1:end);%Remain line matrix
        fl=~clip(~nm);
        re=~clip(~rm);
        %*-*-*Uncomment lines below to see the result*-*-*-*-
               subplot(2,1,1);imshow(fl);
                 subplot(2,1,2);imshow(re);
        break
    else
        fl=~aa;%Only one line.
        re=[];
    end
end

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Ced 2016-3-17

Just as the error says... "aa" is a logical, and you are calling a function "clip" with it. But matlab was not able to find any function which matches this format.

Praveen kumar 2016-3-18

please provide the solution clearly

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Answer 1

Walter Roberson 2016-3-18

1
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/273979-undefined-function-clip-for-input-arguments-of-type-logical-error-in-lines-line-3-aa-clip-aa#answer_214085

You need to visit http://www.mathworks.com/matlabcentral/fileexchange/49832-a-simple-system-for-automatic-test-processing-and-exam-scoring and download the .zip there. Unzip it into a convenient directory that is not underneath your MATLAB installation. Use the MATLAB pathtool to add that directory to your MATLAB path and remember to tell pathtool to "save" the path. After that you will be able to call upon clip.