correct use of randsrc function

out = randsrc(1,1,[-3 -1 1 3; 0.1 0.4 0.4 0.1])

Error: Undefined function 'randsrc' for input arguments of type 'double'.

Aim: I want to display a random number from the set -3, -1, 1, 3 each with respective probabilities 0.1, 0.4, 0.4, 0.1

Answer 1

[Scott MacKenzie]

There are lots of ways to do this, I suppose. Here's what I put together -- with a pesky twist. The weighting is built-in to the set. Just pull a value from set at random and the weighting is a natural outcome.

% define set 
set = [-3 -1 -1 -1 -1 1 1 1 1 3];

% get random value from set (with built-in weighting)
set(randi([1 length(set)],1))

[Akriti Raj]

Thanks Scott

Answer 2

[Walter Roberson]

randsrc() is from the Communications System Toolbox https://www.mathworks.com/help/comm/ref/randsrc.html

See https://www.mathworks.com/matlabcentral/answers/415418-how-to-correct-randsrc-in-matlab for some replacements.