MATLAB: How to dynamically assign data to a variable

MATLABvariable

for ii=1:20

assignin('base', ['PClean_',num2str(ii)],ActualReading(1:end,17));

PClean=['PClean_%d',ii];

I wish to assign data of PClean_1,PClean_2,PClean_3,PClean_4….and so on to PClean but i am not able to assign it for each loop

Dynamic and variable should really never be in the same sentence :)

for i=1:3 
    fepsn(i)=i; % (i) was added to avoid overwriting of the variable 
end

Do not do this. This forum is filled with scores of posts discussing why this is a bad idea.

Instead, use cell arrays, and assign your variables like this

label{i}

Then, those can be use pretty much exactly how you want to use your dynamically named variables.