How to Split a 50000x2 data in .mat into 100 equal-sized 500x2 data?

Dear community,

I am trying to split a 50000x2 data in .mat into 100 equal-sized 500x2 data (that will allow me to plot 100 figures afterwards)

Wish to get help from you all.

Thank you.

Answer 1

[Ameer Hamza]

This code shows an example of how it can be done

M = rand(50000,2);

C = mat2cell(M, 500*ones(100,1), 2);
figure()
for i = 1:numel(C)
    subplot(10,10,i)
    plot(C{i}(:,1), C{i}(:,2))
end

[Lee Kai Sin]

but my data is from .mat, how could I match it?

[Ameer Hamza]

I created M matrix using random data. Load your .mat file and replace M in my code with the name of your variable. Remember to delete the line

M = rand(50000,2);

[Lee Kai Sin]

could I make it as below?

M = load('abc.mat')

[Ameer Hamza]

This will not work. What is the name of variable inside 'abc.mat'? Can you attach the file here?

For example, if name of variable inside 'abc.mat' is 'X', you can use

M = load('abc.mat');
M = M.X;

[Lee Kai Sin]

You may check in the .mat file below.

inside, there are Charge and Phase.

[Ameer Hamza]

Try this code

data = load('Trans_CoronaPDdata.mat');
M = [data.Charge data.Phase];

C = mat2cell(M, 500*ones(100,1), 2);
figure()
for i = 1:numel(C)
    subplot(10,10,i)
    plot(C{i}(:,1), C{i}(:,2))
end

[Lee Kai Sin]

Thanks Man!!

[Ameer Hamza]

I am glad to be of help!!!

Answer 2

[Matt J]

One way is to use mat2tiles. For example

A=rand(50000,2);
Asplit=mat2tiles(A,[500,2]);

whos A Asplit

  Name            Size             Bytes  Class     Attributes

  A           50000x2             800000  double              
  Asplit        100x1             811200  cell