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How do I find all the positive roots of (e^(-.2x ))(cos(2x))-.15x^2+1
2 things: 1) fzero is designed to find a single zero at a time. You will need to loop through each value for x0 and record the ...

11年以上前 | 0

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Genetic Algorithm - Plotting fitness values
PlotFcns needs to be passed in as an option for ga: problem.options.PlotFcns = @gaplotbestf;

11年以上前 | 1

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export m-file with fmincon to C-Code for PowerPC
Hi Daniel, Generating C-Code from MATLAB code that includes optimization solvers such as fmincon is currently not supported. ...

11年以上前 | 0

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Add two numbers
Given a and b, return the sum a+b in c.

12年弱前

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Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

12年弱前

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Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...

12年弱前

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Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

12年弱前

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Distance walked 1D
Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...

12年弱前

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Nonlinear fit to multiple data sets with shared parameters
So if I understand correctly, you want to fit tau1, tau2, tau3 to all the data, but the other parameters are fit on an individua...

12年弱前 | 0

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Generate a vector like 1,2,2,3,3,3,4,4,4,4
Generate a vector like 1,2,2,3,3,3,4,4,4,4 So if n = 3, then return [1 2 2 3 3 3] And if n = 5, then return [1 2 2...

約12年前

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Plotyy - Managing the colors of y-labels
For (1) you can set the YColor property of each of the axes, for example: set(AX(1),'YColor','k'); For (2), if you just ...

約12年前 | 1

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Solve Non Linear Equations using fsolve
From what I can tell this problem has 1600 equations and only 4 unknowns, which would mean it is overdetermined and likely doesn...

約12年前 | 1

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how can I change symbols in symbolic equations with x(1), x(2), ...
I believe the _matlabFunction_ function is what you are looking for: <http://www.mathworks.com/help/toolbox/symbolic/matlabfu...

約12年前 | 0

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matlab2012a vs matlab20111b. Why does the latter produces an error message?
I think the cause here is that fminunc was updated in R2012a to attempt to recover when the objective function returns NaN or In...

12年以上前 | 2

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How to fit parameters in an m.file to a curve?
Take a look at lsqcurvefit from the Optimization Toolbox. <http://www.mathworks.com/help/toolbox/optim/ug/lsqcurvefit.html>...

12年以上前 | 0

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A very simple question for GA
It looks like there is an issue with the way your decision variables are defined. The input to the objective function (which is...

12年以上前 | 0

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Genetic Algorithm - weights ensemble optimization
Hi Michiel, If you aren't 100% set on using a Genetic Algorithm, I recommend starting with a gradient-based optimization solver...

12年以上前 | 0

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Optimization in LinProg
Hi Meemai, The message "Optimization Terminated" means that the optimization completed as normal. If you look at the value o...

12年以上前 | 2

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Optimization Toolbox - Choosing a Solver
Hi Norbert, Since your decision variable shift will need to be an integer (it's being used as an index), you would need to use ...

12年以上前 | 1

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matrix inside a matrix
The REPMAT and DIAG commands should be able to do what you need: A = repmat([3;4;5],5,1) B = diag(A,0) Check out the ...

12年以上前 | 0

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Mixed integer optimisation with genetic algorithm problem
Hi Calen, The GA solver uses a penalty function when optimizing mixed-integer problems. The penalty function takes into accoun...

12年以上前 | 0

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How can I save the settings of fsolve in the optimization tool ?
You can create an options structure in your MATLAB function and then pass that structure to FSOLVE. The options structure is cre...

12年以上前 | 1

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OUT OF MEMORY
This looks like it might help: <http://www.mathworks.com/products/image/description7.html>

12年以上前 | 1

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Optimization Technique
If you're trying to minimize or maximize Y, and Y is a scalar, I'd recommend trying <http://www.mathworks.com/help/toolbox/optim...

12年以上前 | 0

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Make an awesome ramp for a tiny motorcycle stuntman
Okay, given a vector, say v=[1 3 6 9 11], turn it into a matrix 'ramp' like so: m=[1 3 6 9 11; 3 6 9 11 0; 6 9 ...

12年以上前

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Lsqcurvefit on function depending on syms
Hi Gustav, You'll first need to use the matlabFunction command to convert the symbolic equation into a MATLAB function handle...

12年以上前 | 0

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Solving overdeterminated linear equation system with specified conditions
Hi Thomas, If you have the Optimization Toolbox, LSQLIN can solve constrained least-squares problems: <http://www.mathworks.com...

12年以上前 | 1

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Optimization: share additional output of cost function with constraint function
There was a good discussion on this issue here: <http://www.mathworks.com/matlabcentral/newsreader/view_thread/269936> The te...

12年以上前 | 1

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How to use the OutputFcns function in the optimset options?
<http://www.mathworks.com/help/techdoc/math/bsgpq6p-23.html>

12年以上前 | 0

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For LSQNONLIN is it okay if the number of elements in the vector-valued function varies per iteration?
Hi Kevin, LSQNONLIN is using the values in the Fopt vector to determine the gradient, and it does this by calculating Fopt at...

12年以上前 | 2

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