i Just need Code For non-uniform Sampling,Any help ?

i got a code for uniform sampling ,but still need a code for non-uniform sampling ?

[Adam]

idx = [1 3 8 12 13 17];

is a non-uniform set of indices into an array of at least 17 values. Since you gave no information to help anyone understand what you want, it's as good an answer as any!

[Hossam Bastawy]

i just wanna to simulate the process of non-uniform

Answer 1

[Adam Danz]

You can draw numbers from a random sample with weighted probability by using

y = randsample(population,k,true,w)

For example,

population = 1:20; 
k = 10; %draw 10 samples from the population
w = linspace(0,1,numel(population)); % the probability of drawing each element in the population
y = randsample(population,k,true,w)

Or you could draw random numbers from a normal distribution using X = randn(n).

For example, this line below draws 20 random values from a normal distribution centered at 7 with standard deviation of 5.

x = 5 * randn(1,20) + 7