How to plot a tiled layout using a loop?

Hi guys, I have bunch of excel files that almost everything in them is similar. All I want is creating a loop instead of coding 10 figures, that some data is loaded from row (I can get this part done), then using a tiled layout or subplot to click run and MATLAB loops and adds figures to the next tile but I cant get this going:

for r = 1:10
    X=xlsread(B) - for instance
     tiledlayout(2,5)
    scatter(X(the plot works))
    nexttile
end

Answer 1

[ANKUR KUMAR]

for r = 1:10
    subplot(2,5,r)
    plot(randi(10,5,5),'ro')
end

If you have two loops, you can use as follows:

for r = 1:2
    for k=1:5
        subplot(2,5,(r-1)*5+k) % 5 is used because the maximum iteration of k is 5
        plot(randi(10,5,5),'ro')
    end
end

[Wolfgang McCormack]

@ANKUR KUMAR thank you Ankur, how can I include the readings?

For instance, instead of plotting randi, I plot

Mysampledata(:,:,r), it gives me an error on the second loop

[Wolfgang McCormack]

also, do you know how to do it using tiledlayout?

[ANKUR KUMAR]

Mysampledata=randi(20,4,4,10);
for r = 1:10
    subplot(2,5,r)
    plot(Mysampledata(:,:,r),'ro')
end

[Wolfgang McCormack]

@ANKUR KUMAR it gives this error:

Index in position 1 exceeds array bounds (must not exceed 1).

[ANKUR KUMAR]

Could you please attach your data (in a mat file), and the code you are using.

[Wolfgang McCormack]

@ANKUR KUMAR I copied and pasted yours

This one

Mysampledata=randi(20,4,4,10);
for r = 1:10
    subplot(2,5,r)
    plot(Mysampledata(:,:,r),'ro')
end

[ANKUR KUMAR]

clc
clear
Mysampledata=randi(20,4,4,10);
for r = 1:10
    subplot(2,5,r)
    plot(Mysampledata(:,:,r),'ro')
end

The above code results into this plot. Make sure to clear all variables in the workspace.

[Wolfgang McCormack]

@ANKUR KUMAR thanks it is working now after clearning the data. Still, I cannot get mine going. Here is the code i want:

Aloopsamp1 = [1:1:6; 1:1:6]
Aloopsamp2 = [1:1:6; 1:1:6]
for r = 1:2

    subplot(2,5,r)
    bar(Aloopsamp(:,:,r))

end

[ANKUR KUMAR]

Aloopsamp1 = [1:1:6; 1:1:6]
Aloopsamp2 = [1:1:6; 1:1:6]
Aloopsamp=cat(3,Aloopsamp1,Aloopsamp2)

for r = 1:2
    subplot(2,5,r)
    bar(Aloopsamp(:,:,r))
end

Or you can use save into cells

clc
clear
Aloopsamp_cell{1} = [1:1:6; 1:1:6]
Aloopsamp_cell{2} = [1:1:6; 1:1:6]
Aloopsamp_cellarray=cat(3,Aloopsamp_cell{:})

for r = 1:2
    subplot(2,5,r)
    bar(Aloopsamp_cellarray(:,:,r))
end

[Wolfgang McCormack]

Thank you so much @ANKUR KUMAR. This is definitely working now. Just a quick question, could you please teach me why we should do it this way?

[ANKUR KUMAR]

We need to use cat command to concatenate multiple separate matrices into a single matrix. The first argument in the cat command is the dimension along which you wish to concatenate.

Answer 2

[Adam Danz]

> should a nexttile be in the loop?

Yes, but the tiled layout should be defined before the loop.

The first two examples listed in this answer show how to use tiledlayout in a loop with a global legend.

Here's another example.

fig = figure(); 
tlo = tiledlayout(2,3);
h = gobjects(1,6);
colors = lines(6);
for i = 1:6
    ax = nexttile(tlo);
    h(i) = plot(ax, 1:10, rand(1,10), 'Color', colors(i,:), 'DisplayName', sprintf('line %d',i));
end
lg = legend(h);
lg.Layout.Tile = 'East'; % <-- place legend east of tiles

[Wolfgang McCormack]

@Adam Danz thank you so much Adam, you are a savior for me on this forum! I don't know what I had to do without you! thx

Answer 3

[Wolfgang McCormack]

Hey Adam, @Adam Danz

I saw your answer on this post:

https://www.mathworks.com/matlabcentral/answers/6881-legend-in-subplot

Could you please teach me how to corporate that in a for loop? should a nexttile be in the loop?

Thank you!

[Danish Ali]

Hey Adam ! @Adam Danz

I have similar question;

How can we plot multiple figures with subplots using loop?

For example, using loops, MATLAB should generate 17 figures and allocate 10 subplots in each figure.

Figure should have 1 to 10 subplots then figure two should have 11 to 20 and so on.

There are 170 samples. Any idea how it can be done ?

I would appreciate your help.

[Adam Danz]

nFigures = 17;  % number of figs
subplotGrid = [5,5]; % subplot grid arrangement

nAxes = prod(subplotGrid); 
figHandles = gobjects(1,nFigures);
axesHandles = gobjects(nFigures, nAxes);

for i = 1:nFigures
    figHandles(i) = figure(); 
    for j = 1:nAxes
        axesHandles(i,j) = subplot(subplotGrid(1),subplotGrid(2),j,figHandles(i)); 
    end
end

Not tested