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**Content Feed**

Question

MATLAB Add AWS Credentials error

I am trying to setup an AWS account within MATLAB. I get the error in the enclosed screenshot. Can anyone help?

6 months ago | 0 answers | 0

### 0

answersQuestion

Do I need to initiate the parallel computing toolbox for my code to run on multiple cores?

I have a function that I minimize using fmincon. I am exploring the possibility of making my code run faster. I got rid of all f...

6 months ago | 1 answer | 0

### 1

answerQuestion

Why Halton draws do not lead to standard normal draws?

fun.m is a function generating Halton draws and standard normal draws based on that. Copyright information: the function is a si...

7 months ago | 0 answers | 0

### 0

answersQuestion

Why does my objective function return complex?

I have a likelihood function that I need to minimize. I use fmincon to search for the minimum. Iterations of fmincon sometimes s...

7 months ago | 1 answer | 0

### 1

answerQuestion

Can this for loop be vectorized?

The for loop below runs over the third dimension (page) to fill the alpha array. Is it possible to vectorize this for loop? al...

7 months ago | 1 answer | 0

### 1

answerQuestion

Can MATLAB be made cheaper?

I use MATLAB intensively for econometric research but also teaching. There is an increasing pressure or recommendation from both...

8 months ago | 2 answers | 0

### 2

answersIs it possible to publish MATLAB code that can be executed online?

I managed to publish my code as html. Please see https://matlab.mathworks.com/users/mwa0000001754528/Published/html/exercisesims...

8 months ago | 0

Question

Histogram of overlaid standard normal draws

The code below overlays histograms of two sets of standard normal draws. I also attach the graph itself. These draws are based o...

11 months ago | 1 answer | 1

### 1

answerQuestion

fmincon and the Objective function returned NaN warning

I minize the negative of a log-likehood function to estimate the parameters of a mixed logit regression model. I use fmincon to ...

12 months ago | 1 answer | 0

### 1

answerQuestion

GlobalSearch and fmincon options

I use GlobalSearch for minizing a function. I use fmincon as the solver. Does using fmincon as the solver mean that I can make u...

1 year ago | 1 answer | 0

### 1

answerQuestion

Lower and Upper bounds in GlobalSearch

I am maximizin a log-likelihood function in an empirical econometric research to estimate a mixed logit model. For this purpose ...

1 year ago | 0 answers | 0

### 0

answersQuestion

Generating independent Halton sequences in same session

I would like to create two Halton sequences which should be independent of each other. I use the code below. I am worried that t...

1 year ago | 0 answers | 0

### 0

answersQuestion

10 raised to the power

When I multiply two matrices element wise (which is probably not important to my question), some numbers appear as 3.40000000000...

1 year ago | 1 answer | 0

### 1

answerQuestion

Size of the unique elements and size of the output of accumarray

Why are the sizes of the two arrays, unique and accumarray, not the same? size(unique(MAT(:,1))) size(accumarray(MAT(:,1),MAT(...

1 year ago | 1 answer | 0

### 1

answerQuestion

Is it possible to publish MATLAB code that can be executed online?

I have simple .m file. It contains a simulation that demonstrates the law of large numbers with a figure. What I want to do is t...

2 years ago | 2 answers | 1

### 2

answersQuestion

Link to MATLAB documentation

In the MATLAB documentation, the "random" function is explained here https://nl.mathworks.com/help/stats/prob.normaldistribution...

3 years ago | 1 answer | 0

### 1

answerQuestion

Creating a function that returns multiple graphs

I would like to create a function that returns as output arguments two different histograms such that in the script file either ...

4 years ago | 1 answer | 0

### 1

answerQuestion

Is there such a thing as MATLAB Markdown

Do I understand it correctly that MATLAB's Live Script is what R Markdown is for R? Otherwise how can I do what is done here htt...

4 years ago | 0 answers | 0

### 0

answersQuestion

Why is the no evaluate selection button?

Why is there no "evaluate selection" button in the Editor menu that one always has to use the mouse to evaluate a selection, or ...

4 years ago | 1 answer | 0

### 1

answerQuestion

Add surface based on two vectors in 3D plot

In the code below, my aim is to mark the span spanned by the vectors x1 and x2. So I need to add a 2D surface in the 3D plot ind...

4 years ago | 1 answer | 0

### 1

answerQuestion

Moving the labels of the z axis to the back of the 3D graph

In a 3D plot such as the one produced by scatter3, the labels of the z axis are displayed on the left of the plot. Is there a wa...

4 years ago | 1 answer | 0

### 1

answerQuestion

the isnumeric function and the NaN

I have a matrix array (A) that includes three column arrays. All columns contain integers except that one of the columns also in...

4 years ago | 1 answer | 0

### 1

answerQuestion

Is fminunc a too careful search algorithm?

I minimise a log-likelihood function in MATLAB, and it takes about five minutes. I wanted to see how much time it takes in other...

4 years ago | 0 answers | 0

### 0

answersQuestion

How to make conditional calculation?

I have two vectors, contained in matrix M, each with a dimension of 1000 by 1. Each vector contains integer numbers. The values ...

4 years ago | 2 answers | 0

### 2

answersQuestion

warning about optimset and using optimoptions

Hi, I use the fminunc function and the optimset as options = optimset('GradObj','on','MaxFunEvals',1000,'MaxIter',1000,'Dis...

5 years ago | 2 answers | 0

### 2

answersIs MATLAB a compiler?

From the answers above, I understand that a compiler and interpreter are two very different things, and therefore it does not ma...

5 years ago | 0

Creating dummy variables from categorical variable

I would like to ask a question here. One should always vectorise the code where possible, as I read in the literature. But in th...

5 years ago | 0

Question

Is MATLAB a compiler?

I have been using MATLAB for some time but I am still not clear how MATLAB compares to some alternative software in the followin...

5 years ago | 3 answers | 1

### 3

answersQuestion

Creating dummy variables from categorical variable

Suppose there is a column vector array n containing unique but repeating values of the form 1 1 5 7 7 The ...

5 years ago | 4 answers | 0

### 4

answersThe "unique" function returns "Index exceeds matrix dimensions" error

Thanks a lot for the quick and detailed responses.

5 years ago | 0