Why command window outputs 10 times ans = logical 1? See my separate comment, too

Question

ErikaZ 2019-3-1

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/447590-why-command-window-outputs-10-times-ans-logical-1-see-my-separate-comment-too

回答： Walter Roberson 2019-3-1

I cannot find where am I missing the semicolon in the following code:

for j = 2:3
    for t= 1:10
        if j ==2 % Stairs up
            for tt=1:2
                if length(gait_events{j}{1,t})==3 && length(gait_events{j}{5,t})==3 && strcmp(side,'Left') % Left leg analyzed, starts with Left Leg
                    switch tt
                        case 1
                            idx_50TT{j}(t,tt)= round((gait_events{j}{3,t}(1,1) + gait_events{j}{7,t}(1,1))/2*fs);
                        case 2
                            idx_50TT{j}(t,tt)= round((gait_events{j}{3,t}(end,1) + gait_events{j}{2,t}(end,1))/2*fs);
                    end
                elseif length(gait_events{j}{1,t})==3 && length(gait_events{j}{5,t})==3 && strcmp(side,'Right') % Right leg analyzed, starts with Right Leg
                    
                    switch tt
                        case 1
                            idx_50TT{j}(t,tt)= round((gait_events{j}{3,t}(1,1) + gait_events{j}{7,t}(1,1))/2*fs);
                        case 2
                            idx_50TT{j}(t,tt)= round((gait_events{j}{7,t}(end,1) + gait_events{j}{6,t}(end,1))/2*fs);
                    end
                else
                    disp('Not a LL or RR subject');
                end
            end
            
        else j==3 % Stairs down
            for tt=1:2
                if length(gait_events{j}{1,t})==3 && length(gait_events{j}{5,t})==3 && strcmp(side,'Left')  %Left leg analyzed, starts with Left Leg
                    switch tt
                        case 1
                            idx_50TT{j}(t,tt)= round((gait_events{j}{8,t}(1,1) + gait_events{j}{5,t}(1,1))/2*fs);
                        case 2
                            idx_50TT{j}(t,tt)= round((gait_events{j}{3,t}(2,1) + gait_events{j}{1,t}(end,1))/2*fs);
                    end
                elseif length(gait_events{j}{1,t})==3 && length(gait_events{j}{5,t})==3 && strcmp(side,'Right') % Right leg analyzed, starts with Right Leg
                    switch tt
                        case 1
                            idx_50TT{j}(t,tt)= round((gait_events{j}{4,t}(1,1) + gait_events{j}{1,t}(1,1))/2*fs);
                        case 2
                            idx_50TT{j}(t,tt)= round((gait_events{j}{7,t}(2,1) + gait_events{j}{5,t}(end,1))/2*fs);
                    end
                else
                    disp('Not a LL or RR subject');
                end
            end
        end
    end
end

The code is running properly but I am getting 10 of:

ans =
  logical
   1  

in the command window. This is the first time I use switch. Is that causing it? how do I fix the code so I don't get the logical answers.

Thanks!

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

ErikaZ 2019-3-1

在 MATLAB Online 中打开

I made a correction of the location of the for t=1:10 loop. I stil have a logical output but ONLY ONE time.

for j = 2:3
    %for t= 1:10
    if j==2 % Stairs up
        for t=1:10
            for tt=1:2
                if length(gait_events{j}{1,t})==3 && length(gait_events{j}{5,t})==3 && strcmp(side,'Left') % Left leg analyzed, starts with Left Leg
                    switch tt
                        case 1
                            idx_50TT{j}(t,tt)= round((gait_events{j}{3,t}(1,1) + gait_events{j}{7,t}(1,1))/2*fs);
                        case 2
                            idx_50TT{j}(t,tt)= round((gait_events{j}{3,t}(end,1) + gait_events{j}{2,t}(end,1))/2*fs);
                    end
                elseif length(gait_events{j}{1,t})==3 && length(gait_events{j}{5,t})==3 && strcmp(side,'Right') % Right leg analyzed, starts with Right Leg
                    
                    switch tt
                        case 1
                            idx_50TT{j}(t,tt)= round((gait_events{j}{3,t}(1,1) + gait_events{j}{7,t}(1,1))/2*fs);
                        case 2
                            idx_50TT{j}(t,tt)= round((gait_events{j}{7,t}(end,1) + gait_events{j}{6,t}(end,1))/2*fs);
                    end
                else
                    disp('Not a LL or RR subject');
                end
            end
        end
    else j==3 % Stairs down
        for t=1:10
            for tt=1:2
                if length(gait_events{j}{1,t})==3 && length(gait_events{j}{5,t})==3 && strcmp(side,'Left')  %Left leg analyzed, starts with Left Leg
                    switch tt
                        case 1
                            idx_50TT{j}(t,tt)= round((gait_events{j}{8,t}(1,1) + gait_events{j}{5,t}(1,1))/2*fs);
                        case 2
                            idx_50TT{j}(t,tt)= round((gait_events{j}{3,t}(2,1) + gait_events{j}{1,t}(end,1))/2*fs);
                    end
                elseif length(gait_events{j}{1,t})==3 && length(gait_events{j}{5,t})==3 && strcmp(side,'Right') % Right leg analyzed, starts with Right Leg
                    switch tt
                        case 1
                            idx_50TT{j}(t,tt)= round((gait_events{j}{4,t}(1,1) + gait_events{j}{1,t}(1,1))/2*fs);
                        case 2
                            idx_50TT{j}(t,tt)= round((gait_events{j}{7,t}(2,1) + gait_events{j}{5,t}(end,1))/2*fs);
                    end
                else
                    disp('Not a LL or RR subject');
                end
            end
        end
    end
 %end
end