All arguments are passed inside a JavaScript object.You can call any MATLAB function with JavaScript values using:.You can retrieve variable values from MATLAB using:.MATLAB matrices return as JavaScript two-dimensional arrays (and JavaScript two-dimensional arrays return as MATLAB matrices).MATLAB vectors return as JavaScript one-dimensional arrays (and JavaScript one-dimensional arrays return as MATLAB vectors).Retrieving vectors, matrices, numbers, and strings from MATLAB.See the Solvers in Simulations Help topic. Var resultFromMatlab = matlab.exec('complexMathsFunction', parameter1, parameter2) A Solver Class for MATLAB can call into the external MATLAB tool via its API and link the powerful mathematical functions directly into your running simulation. You can invoke arbitrary mathematical functions from MATLAB at run time using a simple construct, called a Solver Class, written in JavaScript.
fmincon can handle more complex constraints too check out the documentation (linked at the start of this discussion) for more details.MATLAB is a numerical computing environment and programming language that includes a large library of mathematical functions, each of which can be called from a script written in JavaScript. The four s in the above are just placeholders for parameters that you are not using. If your constraints are in the forms of upper and lower bounds on each of your parameters that you are optimizing, then put them in to vectors: ub = Īnd call the same handle as before using fmincon: = fmincon(h, w0,, ,, , lb, ub) In this case you would use fmincon most likely. You can now call fminunc on your handle with an initial guess for your vector w: w0 = Īnd fminunc should find the optimal values for your w vector that minimize (note, it looks for the minimum) your cost function. This allows you to pass your parameters a, b, c, Structure, Structure2, and Structure3to your cost function NameOfFunction without fminunc touching them. This basically masks your function with all of its inputs as just a function of what you want to optimize, w, as far as fminunc is concerned. Where w is a vector of the variables that you want to optimize: w = Next, you create a handle to your function in your main file: h = a, b, c, Structure1, Structure2, Structure3) If you need to maximize it, then just multiply your final cost by -1 at the end. Note that fminunc and similar will try to minimize this cost function.
#Solver matlab code#
% Your code goes here, just remember that you return a scalar-valued cost from For example, using fminunc because its syntax is a little less cluttered, you could start by defining your cost function in a separate file, named "NameOfFunction.m": function cost = NameOfFunction(w, a, b, c, Structure1, Structure2, Structure3) You will probably end up finding the solution with fmincon or fminunc in MATLAB. In other words, I would like for Matlab to tell me the values of w1, w2, and w3 that maximize x, while leaving all the other variables alone. I would like to maximize x by changing only variables w1, w2, and w3. More specifically, my function looks something like: function x = NameOfFunction (w1, w2, w3, a, b, c, Structure1, Structure2, Structure3) My issue is that I am trying to maximize the value of the function by altering three scalar variables, while leaving the other input variables constant (since they are data). As inputs, it takes on a number of scalar variables as well as multiple structures that contain data that is used in the calculations. The function I am trying to maximize is relatively complex.
#Solver matlab how to#
I am unable to figure out how to apply these examples in my own case. The documentation appears to only provide examples of optimization problems that analyze simple one-line functions like f(x) = -(x1)(x2)(x3). But, I'm lost when it comes to Matlab's optimization process. In excel, using the solver, it's easy: I can choose a cell with a formula then pick the cells i need to change and add constraints and then minimize. I have data in excel which I am using to make an optimization analysis. EDIT: I have edited my question to be more specific as horchler's comment helped get me started.