MATLAB: I Just need Code For non-uniform Sampling,Any help

Question

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

Answer 1

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