Help making my code more efficient

So I have the below code I use for post-2P image proccessing. I am fairly new to Matlab so I apologize if this is a rudamentatry question and I would appreciate guaidance more so than an answer I can copy and paste. Bsacilly most of the code I feel like could be made into a nested loop but I am not quite sure how to structure that. Thanks in advance!!

x=2590

for ii=1:x
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==1)
        imwrite(QQ,['E1_1018_1' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_1' '.tif'],'tif','writemode','append');
    end
end
for ii=x+1:x*2
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==x+1)
        imwrite(QQ,['E1_1018_2' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_2' '.tif'],'tif','writemode','append');
    end
end

for ii=(x*2)+1:x*3
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*2)+1)
        imwrite(QQ,['E1_1018_3' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_3' '.tif'],'tif','writemode','append');
    end
end
for ii=(x*3)+1:x*4
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*3)+1)
        imwrite(QQ,['E1_1018_4' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_4' '.tif'],'tif','writemode','append');
    end
end
for ii=(x*4)+1:x*5
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*4)+1)
        imwrite(QQ,['E1_1018_5' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_5' '.tif'],'tif','writemode','append');
    end
end
for ii=(x*5)+1:x*6
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*5)+1)
        imwrite(QQ,['E1_1018_6' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_6' '.tif'],'tif','writemode','append');
    end
end
for ii=(x*6)+1:x*7
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*6)+1)
        imwrite(QQ,['E1_1018_7' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_7' '.tif'],'tif','writemode','append');
    end
end
for ii=(x*7)+1:x*8
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*7)+1)
        imwrite(QQ,['E1_1018_8' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_8' '.tif'],'tif','writemode','append');
    end
end
for ii=(x*8)+1:x*9
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*8)+1)
        imwrite(QQ,['E1_1018_9' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_9' '.tif'],'tif','writemode','append');
    end
end
for ii=(x*9)+1:x*10
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*9)+1)
        imwrite(QQ,['E1_1018_10' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_10' '.tif'],'tif','writemode','append');
    end
end
for ii=(x*10)+1:x*11
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*10)+1)
        imwrite(QQ,['E1_1018_11' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_11' '.tif'],'tif','writemode','append');
    end
end
for ii=(x*11)+1:x*12
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*11)+1)
        imwrite(QQ,['E1_1018_12' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_12' '.tif'],'tif','writemode','append');
    end
end
for ii=(x*12)+1:x*13
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*12)+1)
        imwrite(QQ,['E1_1018_13' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_13' '.tif'],'tif','writemode','append');
    end
end
for ii=(x*13)+1:x*14
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*13)+1)
        imwrite(QQ,['E1_1018_14' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_14' '.tif'],'tif','writemode','append');
    end
end
for ii=(x*14)+1:x*15
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*14)+1)
        imwrite(QQ,['E1_1018_15' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_15' '.tif'],'tif','writemode','append');
    end
end
for ii=(x*15)+1:x*16
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*15)+1)
        imwrite(QQ,['E1_1018_16' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_16' '.tif'],'tif','writemode','append');
    end
end
for ii=(x*16)+1:x*17
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*16)+1)
        imwrite(QQ,['E1_1018_17' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_17' '.tif'],'tif','writemode','append');
    end
end
for ii=(x*17)+1:x*18
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*17)+1)
        imwrite(QQ,['E1_1018_18' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_18' '.tif'],'tif','writemode','append');
    end
end
for ii=(x*18)+1:x*19
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*18)+1)
        imwrite(QQ,['E1_1018_19' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_19' '.tif'],'tif','writemode','append');
    end
end
for ii=(x*19)+1:x*20
    QQ=squeeze(Q(ii,:,:));
    QQ=cell2mat(QQ);
    QQ=reshape(QQ,512,796); 
    if (ii==(x*19)+1)
        imwrite(QQ,['E1_1018_20' '.tif'],'tif');
    else
        imwrite(QQ,['E1_1018_20' '.tif'],'tif','writemode','append');
    end
end

Answer 1

[Kevin Holly]

Below I created a nested loop as requested. If the comments do not provide enough guidance, please let me know.

x = 2590;

for i = 1:20
    for ii=x*(i-1)+1:x*i % modified, replaced the numbers you had with equation
        QQ=squeeze(Q(ii,:,:));
        QQ=cell2mat(QQ);
        QQ=reshape(QQ,512,796);
        if ii == x*(i-1)+1 % modified, replace number you had in each iteration with i-1
            imwrite(QQ,['E1_1018_' num2str(i) '.tif'],'tif'); % Replaced hardcoded numbers with a num2str function that converts i from a number to a string
        else
            imwrite(QQ,['E1_1018_' num2str(i) '.tif'],'tif','writemode','append');
        end
    end
end

[Alex Chagovetz]

Kevin,

Thanks much for the clean and concise answer! This is more or less what I imagined but it's fantastic to see the implementation. Appreciate your time!!

[Kevin Holly]

No problem, I would appreciate if you could accept the answer.