Saving figures in a loop with variable file names

Hi I'm trying to run a loop that creates plots and then saves them in a specific file. I'm having trouble saving the figures with the correct names and also populating them in a specific file. I realize what I have currently in the filename is invalid but here is what I have so far:

order = ["rr_la", "ll", "rr_sa", "cc"]; 
orderS = ["epi", "mid", "endo", "ave"]; 

for j = 1:16 % through AHA regions but not the apex
    region2 = "AHA" + j;
    
    for k = 1:4 % through order of strains
        epi = S10.(region2).stat.(order(k)).epi.org;
        mid = S10.(region2).stat.(order(k)).mid.org;
        endo = S10.(region2).stat.(order(k)).endo.org;
        ave = S10.(region2).stat.(order(k)).ave.org;
        phase = 1:size(epi,1);
        
        plot(phase,epi,phase,mid,phase,endo,phase,ave);
        legend('epi','mid','endo','ave');
        grid
        
        filename = [(Snum) '_AHAPlot' (region2) (order(k)) '.fig'];
        saveas(gcf,filename);
       
    end
end

[Shahnil Sadiq Noorani]

hi

can you please help me in this question

Answer 1

[Image Analyst]

Assuming they're all strings, try sprintf():

filename = sprintf('%s_AHAPlot%s%s.png', Snum, region2, order(k));

[Saar Peles]

Seemed to work in creating the files, how do I make them populate a specific file?

[Image Analyst]

I don't know what that means. The line of code I gave constructs a filename string. You then need other lines of code to create the file, such as

currentFigure = gcf;
exportgraphics(currentFigure, filename); % r2020a release or later only