Optimize
Optimize in the Live Editor
Description
The Optimize task lets you interactively optimize linear and nonlinear objective functions subject to constraints of various types, and to solve nonlinear systems of equations. The task automatically generates MATLAB® code for your live script.
Using this task, you can:
Specify the objective function, either by writing a function or browsing for a function.
Specify solver options.
Run the optimization.
For general information about Live Editor tasks, see Add Interactive Tasks to a Live Script.
Open the Task
To add the Optimize task to a live script in the MATLAB Editor, on the Live Editor Insert tab, select Task > Optimize.
Alternatively, in a code block in the script, type a relevant keyword, such as
fminbnd. Select Optimize from the suggested
command completions.
Parameters
Solver — Optimization solver
solver name
Optimization solver that MATLAB uses to solve the problem, specified as one of these solvers:
fminbnd— Minimize a real function of one variable on a bounded domain.fminsearch— Minimize a real function of several variables on an unbounded domain.lsqnonneg— Minimizenorm(C*x-d)subject tox ≥ 0.fzero— Find a real pointxwhere a real nonlinear functionf(x) = 0.
Example: fminsearch
Objective function — Function to minimize or find a root
function handle | local function | function file
Function to minimize (for fminbnd or
fminsearch) or to find a root (for fzero),
specified as a function handle, local function name, or function file.
Function handle — Create the function handle in the workspace. Then, in the Optimize task, select Objective function > Function handle and choose the objective function.
Local function
New — In the Optimize task, select Objective function > Local function and then click the New button. A new function definition appears below the task. Edit the function so that it calculates the objective. Then choose the local function.
Existing — Select Objective function > Local function and choose the local function.
Function file
New — In the Optimize task, select Objective function > From file and then click the New button. A new function file appears. Edit the file to calculate the objective, then save the file on the MATLAB path. Click the Browse button and select the file.
Existing — Choose
From filethen Browse... and select the file.
Tips
For functions with extra inputs, Optimize requires you to choose the optimization variable, and to specify which workspace variables contain the fixed data inputs. This example contains three function inputs:
Optimize generates code only after you specify all function inputs.
Optimize cannot parse a function containing the
varargininput or a function that contains an error.If you select an objective function from a file, Optimize adds the file location to your MATLAB path.
If Optimize has a parsing error or if multiple local functions have the same name, the list of available local functions is empty.