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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...

oltre 11 anni fa

Risolto

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...

oltre 11 anni fa

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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 ...

oltre 11 anni fa

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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...

oltre 11 anni fa

Risposto

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...

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...

oltre 11 anni fa | 0

Risolto

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...

oltre 11 anni fa

Risposto

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 ...

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 ...

oltre 11 anni fa | 1

| accettato

Risposto

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...

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...

oltre 11 anni fa | 1

Risposto

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...

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...

oltre 11 anni fa | 0

Risposto

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...

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...

oltre 11 anni fa | 2

| accettato

Risposto

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>...

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>...

oltre 11 anni fa | 0

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Risposto

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...

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...

quasi 12 anni fa | 0

| accettato

Risposto

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...

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...

quasi 12 anni fa | 0

Risposto

Optimization in LinProg

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

Optimization in LinProg

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

quasi 12 anni fa | 2

| accettato

Risposto

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 ...

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 ...

quasi 12 anni fa | 1

Risposto

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 ...

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 ...

circa 12 anni fa | 0

| accettato

Risposto

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...

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...

circa 12 anni fa | 0

Risposto

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...

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...

circa 12 anni fa | 1

| accettato

Risposto

OUT OF MEMORY

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

OUT OF MEMORY

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

circa 12 anni fa | 1

| accettato

Risposto

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...

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...

circa 12 anni fa | 0

| accettato

Risolto

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 ...

circa 12 anni fa

Risposto

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...

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...

circa 12 anni fa | 0

| accettato

Risposto

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...

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...

circa 12 anni fa | 1

| accettato

Risposto

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...

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...

circa 12 anni fa | 1

| accettato

Risposto

How to use the OutputFcns function in the optimset options?

<http://www.mathworks.com/help/techdoc/math/bsgpq6p-23.html>

How to use the OutputFcns function in the optimset options?

<http://www.mathworks.com/help/techdoc/math/bsgpq6p-23.html>

circa 12 anni fa | 0

Risposto

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...

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...

circa 12 anni fa | 2

| accettato

Risposto

GA optimization

Use GAOPTIMSET: <http://www.mathworks.com/products/global-optimization/demos.html?file=/products/demos/shipping/globaloptim/ga...

GA optimization

Use GAOPTIMSET: <http://www.mathworks.com/products/global-optimization/demos.html?file=/products/demos/shipping/globaloptim/ga...

circa 12 anni fa | 0

Risposto

GA optimization

You can create a function handle to the network and then pass that function handle into GA. Note that GA will pass in a row vec...

GA optimization

You can create a function handle to the network and then pass that function handle into GA. Note that GA will pass in a row vec...

circa 12 anni fa | 4

| accettato

Risposto

fmincon and normal distribution log likelihood

Hi Jimmy, It looks like the way you have your optimization set up, you're trying to maximize the value of LL. However, all o...

fmincon and normal distribution log likelihood

Hi Jimmy, It looks like the way you have your optimization set up, you're trying to maximize the value of LL. However, all o...

circa 12 anni fa | 1