MATLAB: Is it possible to generate a set of numbers within a range chosen from a random array

arrayrandomrange

My problem lies in the last line. I want to generate a set of numbers within the range corresponding to 1:10 from the random array of R.

R = rand(length(U),1);
[B,I] = sort(R);
R1 = totalarray(I,:);
P1 = sort(R1(:,10));

If you want to extract the numbers in the range 0-10 from the 10th column of R1, then do this:

col10 = R1(:, 10);
rowsToExtract  = col10 >= 0 & col10 <= 10;
extractedNumbers = col10(rowsToExtract)

If you want to extract the numbers in the range 0-10 from anyplace in R1, then do this:

elementsToExtract  = R1 >= 0 & R1 <= 10;
extractedNumbers = R1(rowsToExtract) % will be a 1-D vector.

Guess:

    R2 = unique( R, 'stable' );

'stable' to avoid to sort R2

a = -10;
b = 10;
r = (b-a).*rand(1000,1) + a;
%%remove the range [-1 3] 
r1 = r ;
r1(r>=-1 & r<=3) = [];