How to generate random number within specific values

Hi all, i hope you are doing well.

i want to generate random number of specific range using for loop and saved the array in mat file

how can i do that

i have the following code which pick value manually

like prfSTG value between 200 to 1200

and n_pulsesSTG value between 200 to 1000

prfSTG = [200 400 800 1000 1200  ];
n_pulsesSTG = [800 800 800 800 800 800 ];
prfSTG = repmat(prfSTG,1,(ceil(sum(n_pulsesSTG)/length(n_pulsesSTG))));

[Jan]

The question is not clear. Which are the specifications for the random matrix? The saving works by the save command.

[Med Future]

@Jan i want to make random array like

prfSTG value between 200 to 1200

and n_pulsesSTG value between 200 to 1000

and apply for loop in that so the values store in

rfSTG = repmat(prfSTG,1,(ceil(sum(n_pulsesSTG)/length(n_pulsesSTG))));

Answer 1

[Jan]

Sorry, your information are still not clear. I try it with a most likely not satisfying solution to demonstrate the problem:

% prfSTG value between 200 to 1200
prfSTG = rand * 1000 + 200;

% n_pulsesSTG value between 200 to 1000
n_pulsesSTG = rand * 800 + 200;

% apply for loop in that so the values store in
for k = 1:1   % completely useless loop
  rfSTG = repmat(prfSTG,1,(ceil(sum(n_pulsesSTG)/length(n_pulsesSTG))));
end

What is missing to solve your needs?

[Med Future]

@Jan The following code generate the output like below

prfSTG = [200 400 800 1000 1200  ];
n_pulsesSTG = [800 800 800 800 800 800 ];
prfSTG = repmat(prfSTG,1,(ceil(sum(n_pulsesSTG)/length(n_pulsesSTG))));

But i manully gives the values in array in prfSTG and n_pulsesSTG , i want to generate it automatically ,using loop

[Jan]

I do not see, where a loop could be useful here. Where does the randomness come into play?

Answer 2

[Arif Hoq]

Try this:

prfSTG=randi([200 1200], 1,5);  % generating random number between 200 and 1200
n_pulsesSTG = randi([200 1000], 1,5); % generating random number between 200 and 1000
C=cell(1,5)

C = 1×5 cell array
    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}    {0×0 double}

for i=1:length(prfSTG)
 C{i} = repmat(prfSTG(i),1,(ceil(sum(n_pulsesSTG)/length(n_pulsesSTG(i)))));
end
Matrix=[C{:}];
output=reshape(Matrix,length(C{1, 1}),[]);
plot(output, 'LineWidth', 3)