For loop with subplots with uploaded

Hallo :)

I am trying to conduct seven subplots with three graphs each. I have conducted one subplots but i have a hard time naming the codes inside the subplote correctly. Can you help me?

[Mathieu NOE]

hi Ditmer

inside the for loop you have to create a new figure at each loop iteration

so before the line "subplot(3,1,1)" insert a new line with :

figure(i);

[Mathieu NOE]

I suspect that you created one figure object at the very beginning of the code , but we cannot see it because i guess it's hidden by the "Run to Here" windows on top of the editor window

so this line should be removed / commented and remove also the "hold on" which is then no more needed

[Ditmer Kiis]

Hey. Thanks for answering

No, just a "clc"

[Ditmer Kiis]

Im in doubt how i should name the the variables time, vol, plot etc to get 7 figures.

[Mathieu NOE]

I would suggest that you do the data loading inside the for loop instead of writting seven fil variables at the beginning

also please do not use i or j as loop index as they are normally reserved for complex numbers (i² = -1 , j² = -1)

for k = 1:7
    % load data 
    filename = ['s1_r' num2str(k) '.txt']; % file to be loaded
    fil = ReadVerTxt(filename,3);
    time = ...
    vol = ...
    % plot
    figure(k)
    subplot(311) .... % etc etc
end

[Ditmer Kiis]

It dosent seems to help. I have made this graph for the first file in another script. i was hoping one could make a script so i could get 7 similar subplots

.

____

Now i have to re-do it 7 times but with-in a loop.

Sorry if i am completly retarded. I am new to Matlab.

[Mathieu NOE]

hi Ditmer

no one will blame you because you are new to Matlab (everybody was a novice too some day !)

I can further help you if you can share the data files (zip them) + your code (including the subfunctions for reading the text files)

Mathieu

[Ditmer Kiis]

Hey Mathieu. Was in Paris a couple of days therefore im a litle late with the answer.

The files is in a zip folder.

[Mathieu NOE]

Hi Ditmer

hope you enjoyed your stay in Paris (that's where I work - to be more precise 70 kms south of Paris)

try this code :

clc
clearvars


for k = 1:7
    % load data 
    filename = ['s1_r' num2str(k) '.txt']; % file to be loaded
    fil = readmatrix(filename,"NumHeaderLines",7);
    
    time = fil(:,1);
    flowrate = fil(:,2);
    vol = fil(:,3);
    cumsum_flowrate = cumsum(flowrate);
    time_step = time(2)-time(1);
    vol_kontrol = -time_step * cumsum_flowrate;
    
    figure(k)
    subplot(3,1,1);
    plot(time,vol,'LineWidth',3);
    xlabel('time');
    ylabel('vol');
    subplot(3,1,2);
    plot(time,flowrate,'LineWidth',3);
    subplot(3,1,3)
    plot(time,vol_kontrol,'LineWidth',3);
    

end

Answer 1

[Voss]

files = sprintfc('s1_r%d.txt',1:7).';

for ii = 1:numel(files)
    
    fil = ReadVerTxtData(files{ii},3);
    
    time = fil(:,1);
    flowrate = fil(:,2);
    vol = fil(:,3);
%     sum_flowrate = sum(flowrate);
    cumsum_flowrate = cumsum(flowrate);
    time_step = time(2)-time(1);
    vol_kontrol = -time_step * cumsum_flowrate;
    
    figure();
    subplot(3,1,1);
    plot(time,vol,'LineWidth',3);
    xlabel('time');
    ylabel('vol');
    subplot(3,1,2);
    plot(time,flowrate,'LineWidth',3);
    subplot(3,1,3)
    plot(time,vol_kontrol,'LineWidth',3);
    
end

Answer 2

[Ditmer Kiis]

Hey

I forgot to answer you.

Thank you very much for your time and patience! I am extremely grateful

Paris was great, superb weather (guess we were lucky), good food, vine etc..

Greetings!

[Mathieu NOE]

hello Ditmer

good news !

all the best