MATLAB: How to use sprintf inside a loop

Question

Hello

I have multiple mat file, I need to plot specide colomns of each on the same figure

I don't now how to refer file names using sprintf

please tell me what is the correct format to read file name

I have

momentrate_S1_SS

momentrate_S1_rev

momentrate_S1_nor

momentrate_S2_SS

momentrate_S2_rev

momentrate_S2_nor

momentrate_S3_SS

momentrate_S3_rev

momentrate_S3_nor

momentrate_S4_SS

momentrate_S4_rev

momentrate_S4_nor

.

.

.

.

I want to plot "momentrate_S*_SS" vs "momentrate_S*_rev" vs "momentrate_S*_nor"

*is the same number

the following gives error

hold on
for filetype = ['SS' 'rev' 'nor']
number=1:10
filedata3 = load(fullfile('D:\Jobs_2019\self\verhor\round3\hikaku_plot', sprintf('momentrate_S%d_%3s.mat', number,filetype)));
plot(filedata3.momentrate(:,1), filedata3.momentrate(:,2));
end

thank you

Answer 1

Try this:

filetype = {'SS' 'rev' 'nor'};
figure
hold all
for k1 = 1:numel(filetype)
    for k2 = 1:10
        filedata3 = load(fullfile('D:\Jobs_2019\self\verhor\round3\hikaku_plot', sprintf('momentrate_S%d_%3s.mat', k2, filetype{k1})));
        plot(filedata3.momentrate(:,1), filedata3.momentrate(:,2));
    end
end
hold off

I obviously cannot test all of it, however I did test the sprintf call, and it works correctly. I added the hold all call to plot all the file data on the same axes.

If you want 30 different plots instead, do this:

filetype = {'SS' 'rev' 'nor'};
for k1 = 1:numel(filetype)
    for k2 = 1:10
        filedata3 = load(fullfile('D:\Jobs_2019\self\verhor\round3\hikaku_plot', sprintf('momentrate_S%d_%3s.mat', k2, filetype{k1})));
        figure
        plot(filedata3.momentrate(:,1), filedata3.momentrate(:,2));
    end
end

Experiment to get the result you want.