for loop within for loop

2019 11 4
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更新时间：2019 11 4
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Hey,
I want to make two for loops. the first for loop is when the values are j = [1:4,5:8,9:2,13:6,7:20,21:24]
because I am using this for a subplot, so when j = 1 or j=5 or j=9 or j=13 or j=17 or j=21 then i=1.
When j=2, j=6 ,j=10 , j=14 , j=18 or j=22 then i=2.
When j=3, j=7, j=11, j=15, j=19 or j=23 then i=3.
When j=4, j=8, j=12, j=16, j=20, j=24 then i=4.

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ME
ME 2019-11-4

2 个投票

I don't know what you want to do inside those for loops so I can't give you full code but the loops you'll want are:
for i=1:4;
for j=i:4:24;
end
end

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Hinna Ahmed
Hinna Ahmed 2019-11-4
thank you for your answer but it still doesn't work. subplot should go upto subplot(1,4,4).
ME
ME 2019-11-4
for i=1:4;
for j=i:4:24;
end
subplot(1,4,i);
plot(...)
end
Depending on how you store your results, you may need to do your plotting commands with some (i:4:end) commands in there to miss out a bunch of zeros.
Hinna Ahmed
Hinna Ahmed 2019-11-4
shouldn't there be anything inside the second loop? :)
ME
ME 2019-11-4
My assumption was that you needed to get the correct combinations of i and j for some further calculations. I was imagining that you'd fill those calculations in within the j for loop. Otherwise I can't understand what you are actually plotting.
Hinna Ahmed
Hinna Ahmed 2019-11-4
编辑：Hinna Ahmed 2019-11-4
I am plotting a matrix from a table.
imagesc(t/60,F,DataTable3.Coh_time{j,1})
j is actualle the row of its location. The length of the table is 24. the first 4 rows should be plotted in a subplot together and then the next 4 rows in another subplot and so on (upto 6 plots). There should be 6 plots each containing 4 subplots. The imagesc function is actually plotting the matrix.
ME
ME 2019-11-4
Well then if that's what you want then that should have been stated in your initial question!
If you could attach the data table to your question that would be extremely helpful!
Hinna Ahmed
Hinna Ahmed 2019-11-4
编辑：Hinna Ahmed 2019-11-4
I am sorry, that I didn't state it in the initial question
ME
ME 2019-11-4
编辑：ME 2019-11-4
No problem, it's just that people are giving up their time to answer these questions and that is all for nothing if the questions aren't clear.
Anyway, if you want the first four rows of your cell array to be figure one, rows 5-8 in figure two and so on, then you can use:
for p=1:6
figure
for i=1:4
subplot(2,2,i)
imagesc(C{((p-1)*4)+i,1})
end
end
where p is for the six figures and i is for the four rows. I have assumed a 2x2 layout for the subplots in each figure window but if you'd prefer then all in a line then swap subplot(2,2,i) for either subplot(1,4,i) or subplot(4,1,i).
I hope this helops now!
Hinna Ahmed
Hinna Ahmed 2019-11-4
THANK YOU SO MUCH!! :D
ME
ME 2019-11-4
No problem, happy to help!

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