Error using vertcat Dimensions of arrays being concatenated are not consistent.

ı am try to using this code for a car detection and recognation. but its give me this error. ı am run my code step by step for find this error reason but ı didn't find it. the codes down belown

clc;
close all;
clear all;
video = VideoReader('15sn.avi'); 
frameCount=video.NumberOfFrames;
variable=1;
for i=1:3:frameCount
    mov(variable).framematrix=read(video,i)
    variable=variable+1;
end 
temp = zeros(size(mov(1).framematrix));
[M,N] = size(temp(:,:,1));
for i = 1:75
    temp = double(mov(i).framematrix) + temp;
end
background = temp/75;
background(:,1:160,:)=0;
background(:,363:480,:)=0;
centroidx = zeros(frameCount,1);
centroidy = zeros(frameCount,1);
guess = zeros(frameCount,4);
real = zeros(frameCount,4);
R=[[0.2845,0.0045]',[0.0045,0.0455]'];
H=[[1,0]',[0,1]',[0,0]',[0,0]'];
Q=0.01*eye(4);
P = 100*eye(4);
dt=1;
A=[[1,0,0,0]',[0,1,0,0]',[dt,0,1,0]',[0,dt,0,1]'];
kfinit = 0;
th = 90;
car=0;
bus=0;
for i=1:frameCount/3
    imshow(mov(i).framematrix);
    hold on
    dene=mov(i).framematrix;
    dene(:,1:160,:)=0;
    dene(:,363:480,:)=0;
    currentFrame = double(dene);
    difference = zeros(M,N);
    difference = (abs(currentFrame(:,:,1)-background(:,:,1))>th);
    (abs(currentFrame(:,:,2)-background(:,:,2))>th);
    (abs(currentFrame(:,:,3)-background(:,:,3))>th); 
    labelimg = bwlabel(difference,4); 
    markimg = regionprops(labelimg,'basic');
    [MM,NN] = size(markimg);
    for nn = 1:MM
        if markimg(nn).Area > markimg(1).Area
            tmp = markimg(1);
            markimg(1)= markimg(nn);
            markimg(nn)= tmp;
        end
    end
    bb = markimg(1).BoundingBox; 
    xcorner = bb(1);
    ycorner = bb(2);
    xwidth = bb(3);
    ywidth = bb(4);
    cc = markimg(1).Centroid; 
    centroidx(i)= cc(1);
    centroidy(i)= cc(2);
    hold on
    rectangle('Position',[xcorner ycorner xwidth ywidth],'EdgeColor','b'); 
    hold on
    plot(centroidx(i),centroidy(i), 'bx'); 
    kalmanx = centroidx(i)- xcorner; 
    kalmany = centroidy(i)- ycorner;
    if centroidx(i)<390 && centroidx(i)>130 && centroidy(i)>200  
        if ywidth<45 && xwidth<100 && centroidy(i)>245 && centroidy(i)<265
            car=car+1; 
            annotation('textbox')
            [0.15 0.05 0.3 0.1];
            'String',{['Car =' num2str(car)]};
            'FontSize';14,
            'FontName','Arial',
            'LineStyle','--';
            'EdgeColor',[1 1 0],
            'LineWidth';2;
            'BackgroundColor';[0.9  0.9 0.9];
            'Color';[0.84 0.16 0];
        end
        
    else if ywidth>100 
            bus=bus+1; 
            annotation('textbox')
            [0.55 0.05 0.3 0.1],
            'String';{['Bus =' num2str(bus)]};
            'FontSize';14,
            'FontName';'Arial';
            'LineStyle';'--',
            'EdgeColor',[1 1 0],
            'LineWidth';2,
            'BackgroundColor';[0.9  0.9 0.9];
            'Color';[0.84 0.16 0];
    end
    end
    
    if kfinit == 0
        guess =[centroidx(i),centroidy(i),0,0]' ;
    else
        guess = A*real(i-1,:)';
    end
    kfinit = 1;
    Ppre = A*P*A' + Q;
    K = Ppre*H'/(H*Ppre*H'+R);
    real(i,:) = (guess + K*([centroidx(i),centroidy(i)]' - H*guess))';
    P = (eye(4)-K*H)*Ppre;
    hold on
    rectangle('Position',[(real(i,1)-kalmanx)
        (real(i,2)-kalmany) xwidth ywidth],'EdgeColor','r','LineWidth',1.5);
    hold on
    plot(real(i,1),real(i,2), 'rx','LineWidth',1.5);
    drawnow;
end

Thanks for help and advices and sorry for my bad english...

Answer 1

[DGM]

This line:

rectangle('Position',[(real(i,1)-kalmanx) 
    (real(i,2)-kalmany) xwidth ywidth],'EdgeColor','r','LineWidth',1.5);

If you break the line when constructing an array with [] operators, it's treated implicitly as ; (i.e. vertical concatenation). If you want to break a long expression over multiple lines, use ...

rectangle('Position',[(real(i,1)-kalmanx) ...
    (real(i,2)-kalmany) xwidth ywidth],'EdgeColor','r','LineWidth',1.5);

[furkan özdemir]

Thank you so much its work.

Answer 2

[Steven Lord]

What is the full and exact text of the warning and/or error messages you receive? Please show us all the text displayed in orange and/or red in the Command Window when you run your code.

If you remove the first three lines of your script:

clc;
close all;
clear all;

you could use breakpoints to help you debug your code.

[furkan özdemir]

yeah you are right. its my first time ask a question in matworks forum. I will be more careful with the questions I will ask from now on. thank you for your suggestions.