How can I do Exhaustive search in matlab?

13 views (last 30 days)
I have a function that depends on three variables x,y,z. I want to find the optimal values of these variables using exhaustive search that can maximize this function, subject to x+y+z<=1. How can I do this in Matlab?

Accepted Answer

Walter Roberson
Walter Roberson on 21 Nov 2019
xvalues = [list all possible x values]
yvalues = [list all possible y values]
zvalues = [list all possible z values];
[X, Y, Z] = ndgrid(xvalues, yvalues, zvalues);
mask = X + Y + Z <=1;
x = X(mask);
y = Y(mask);
z = Z(mask);
f = x.^3 - log(y+z) + sin(z); %compute everything. %use appropriate function
[bestf, bestidx] = min(f); %or max(f) depending what you are trying to optimize
bestx = x(bestidx);
besty = y(bestidx);
bestz = z(bestidx);
  5 Comments
Walter Roberson
Walter Roberson on 6 Oct 2020
mask = X + Y + Z <= maxP & X <= Y & Y <= Z;

Sign in to comment.

More Answers (0)

Categories

Find more on Colormaps in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!