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);

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

[Ced]

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]

please provide the solution clearly

Answer 1

[Walter Roberson]

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.