MATLAB: How to remove the lines that are not in the cross section of the annulus

Question

Best Answer

        figure(1);
        
        
        % add lj line to temperature profile
        hold on;
        
        for ii=0:1
        [P1,P2]=deal([x(1+ii);y(1+ii)], [x(2+ii);y(2+ii)]);
         
         fun=@(t) norm(t*P1+(1-t)*P2);
         [~,R]=fminbnd(fun,0,1);
        
         if R<R1; continue; end
         line([P1(1),P2(1)],[P1(2),P2(2)],'color','red');
        end

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                                                                                                                                                        ↑

It needs to be ‘x1’, or ‘x2’ or one of the others.

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Set a dot (.) before each ^2-operation.

Best wishes

Torsten.

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Answer 1

        figure(1);
        
        
        % add lj line to temperature profile
        hold on;
        
        for ii=0:1
        [P1,P2]=deal([x(1+ii);y(1+ii)], [x(2+ii);y(2+ii)]);
         
         fun=@(t) norm(t*P1+(1-t)*P2);
         [~,R]=fminbnd(fun,0,1);
        
         if R<R1; continue; end
         line([P1(1),P2(1)],[P1(2),P2(2)],'color','red');
        end