MATLAB: Horzcat error when trying to display an entire column from a 4 by 4 matrix

beginnererrorhorzcatMATLABmatrix

 clear all
m=input ('please input a 4 by matrix');
 w=input (' do you want to display a row, column or a single element of the matrix?, for a row type 1, for a element type 2 and for column type 3');
 if w==1
     dumb=input ('what row do you want displayed?');
     if dumb==1
         disp (['your chosen row is ' num2str(m(1,:))])
     elseif dumb==2; 
         disp (['your chosen row is ' num2str(m(2,:))])
     elseif dumb==3; 
         disp (['your chosen row is ' num2str(m(3,:))])
     elseif dumb==4
         disp (['your chosen row is' num2str(m(4,:))])
     end;
 elseif w==3
    stupid=input ('what column do you want displayed?');
    if stupid==1 %for some reason this doesnt really work :S
        disp (['your chosen column is ' num2str(m(:,1))])
    elseif stupid==2; 
        disp (['your chosen column is ' num2str(m(:,2))])
    elseif stupid==3; 
        disp (['your chosen column is ' num2str(m(:,3))])
    elseif stupid==4;
        disp (['your chosen column is ' num2str(m(:,4))])
    end;
elseif w==2
    re=input ('what row do you want selected ');
    rc=input ('what column do you want selected ');
    disp ([' Your chosen value based on your rows and columns is ' num2str(m(re,rc))])
 end;

Best Answer

num2str() applied to a column vector results in a character array with as many rows of output as there were rows in the column. You try to concatenate the single-row string 'your chosen column is ' with those multiple rows.
Try, e.g., num2str(m(:,3).')
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