How make Random sampling set multiple times

Hi im beginer of matlab and now im try to make randomsapling

mulitple times.

so i want to make random samping from same data set multiple times

my code this x = datasample(data,k)

so i want to make

x = datasample(data,k)

x1 = datasample(data,k)

x2 = datasample(data,k)

....

xn = datasample(data,k)

so i want to make above code just one code and make one data set.

thank you!

Answer 1

[Deepak]

Hi @HAN TAEHEE,

To my understanding, you have written MATLAB code to generate “n” random samples from the given input data. Now, you want to automate this process and generate only one output dataset from all the generated samples.

To accomplish this task, we can pre-allocate a matrix to store the output sample data. Next, we can iterate “n” times using for loop to generate the samples and store them in the output matrix using array indexing in MATLAB.

Here is the MATLAB code that addresses this task:

data = 1:100;  
k = 10;  
n = 5; 

% Preallocate a matrix to store the samples 
samples = zeros(n, k); 

% Perform random sampling multiple times 
for i = 1:n 
    samples(i, :) = datasample(data, k); 
end 

disp('All samples in a single dataset:'); 
disp(samples); 

Please find attached the documentations of “loops”, “zeros” and “array indexing” in MATLAB for reference:

https://www.mathworks.com/help/matlab/matlab_prog/loop-control-statements.html

https://www.mathworks.com/help/matlab/ref/zeros.html

https://www.mathworks.com/help/matlab/math/array-indexing.html

I anticipate this will address the issue.