correct use of randsrc function
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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
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Answers (2)
Scott MacKenzie
on 9 Jun 2021
Edited: Scott MacKenzie
on 9 Jun 2021
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))
Walter Roberson
on 10 Jun 2021
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.
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