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Question

Fit a linear model and get its R^2 if I want the model to have a specific form and slope

I want to see fit a model y=mx+c when m=1 to some data, so I only want to learn the offset. I know the expressions are relat...

6 years ago | 0 answers | 0

### 0

answersQuestion

Why does hist, histogram and how the shape of my data is affect how my results are displayed?

I have these 3 plots: <</matlabcentral/answers/uploaded_files/126103/Screen%20Shot%202018-07-22%20at%2010.30.45%20PM.png>> ...

6 years ago | 1 answer | 0

### 1

answerQuestion

How does one assign a different maker to each scatter without having to call scatter multiple times?

How does one assign a different maker to each scatter without having to call scatter multiple times? Is it possible to do thi...

6 years ago | 1 answer | 0

### 1

answerWhat is the color spec for default blue?

c = [0 0.4470 0.7410]; scatter(X,Y,'MarkerEdgeColor',c) finally worked

6 years ago | 1

Question

What is the color spec for default blue?

i.e. this blue: <</matlabcentral/answers/uploaded_files/125288/Screen%20Shot%202018-07-15%20at%209.09.49%20AM.png>> ----...

6 years ago | 3 answers | 1

### 3

answersQuestion

Change axis values of an already existing figure

I have a figure that has axis already and numbers in them. I wish to change the axis values display values so that they read dif...

6 years ago | 1 answer | 0

### 1

answerQuestion

Is it possible to have matlab go into debugging mode only when it hits a nan?

Is it possible to have matlab go into debugging mode only when it hits a nan, without writing code, just run and then halt when ...

6 years ago | 2 answers | 0

### 2

answersQuestion

Why does is take O(n^2) to append elements in matlab when it takes O(n) amortized time in theory?

why doesn't matlab have O(n) amortized time to append elements to a growing array? I thought his was an algorithmically well und...

6 years ago | 1 answer | 0

### 1

answerQuestion

Is there a version of dir that takes a path?

I want to use `dir` to get some list of files. But to do this I need to cd into a directory which seems really dum. Is there not...

6 years ago | 0 answers | 0

### 0

answersQuestion

Can one dynamically add new keys to a Maps data structure in Matlab?

I recently discovered the maps data structure but it seems I can't dynamically assign new keys to it. I am going through some fi...

6 years ago | 1 answer | 0

### 1

answerQuestion

Why is fsurf complaining when it plots -e^(-x^2)?

I wanted to plot: <</matlabcentral/answers/uploaded_files/101102/Screen%20Shot%202018-01-13%20at%2012.58.34%20AM.png>> wit...

6 years ago | 1 answer | 0

### 1

answerQuestion

How to plot a histogram in 2D if one has the counts already?

I collected some 2D histcounts with histcounts2 now that I have the counts, how do I plot them? I know one can just fee...

7 years ago | 1 answer | 0

### 1

answerQuestion

Why doesn't getenv work on MAC OS X?

I was trying to get environment variables that I know exist but it returns empty arrays...is that normal? hello = ...

7 years ago | 1 answer | 0

### 1

answerQuestion

Why isn't the MATLAB command just available in the terminal for OS X?

I was to use the matlab command in the terminal and it seems I have to do extra stuff for it to be available. How can it "just b...

7 years ago | 1 answer | 0

### 1

answerQuestion

Can one run a matlab script from the command line and pass arguments to it **without making it into a function**?

I was to run a MATLAB script from the terminal and pass arguments to it. I know I can make it into a function to pass arguments ...

7 years ago | 2 answers | 1

### 2

answersQuestion

How do I convert a string to a single quotes string?

I have a number N_train that I want to convert to a single quotes string (otherwise the title does not look as I want it): ...

7 years ago | 2 answers | 0

### 2

answersQuestion

How does one get polynomial features like in python but for MatLab?

Is there code that gets the polynomial features of a vector like in: http://scikit-learn.org/stable/modules/generated/sklearn...

7 years ago | 2 answers | 1

### 2

answersQuestion

What does the error `Error in checkArgsForHandleToPrint` mean?

What does the error: Error using checkArgsForHandleToPrint Handle input argument contains nonhandle values. Error...

7 years ago | 2 answers | 0

### 2

answersQuestion

Can someone provide me an example of loading data from Python to Matlab?

I saw the page: https://www.mathworks.com/help/matlab/matlab_external/pass-data-to-matlab-from-python.html that shows whic...

7 years ago | 0 answers | 0

### 0

answersQuestion

Is there a function that works like mathematica's Manipulate but in Matlab?

I wanted to change a variable and see the change in the plot dynamically. Is that possible in matlab? as in: Introduction to Man...

7 years ago | 1 answer | 0

### 1

answerIs it possible to get access to variables within function handles?

c = 3; f = @(x) x + c; ff = functions(f); ff.workspace{1}.c

7 years ago | 1

Question

Is it possible to get access to variables within function handles?

For example say I define: c=3; f = @(x) x + c; is it possible to do f.c or basically get access to the varia...

7 years ago | 3 answers | 0

### 3

answersQuestion

What is the quickest way to find a gradient or finite difference in Matlab of a real function in high dimensions?

I have a function handle (black box) that gives me the value of f which is a real number and a function of multiple variables. W...

7 years ago | 1 answer | 0

### 1

answerQuestion

Is it possible to install matlab in a docker image?

I wanted to install my matlab in a docker image. Is that possible?

7 years ago | 5 answers | 2

### 5

answersQuestion

How does one plot a histogram from the histogram counts?

I have produced an array of counts, specifically produced with: histcounts the reason I do this is because storing the a...

7 years ago | 2 answers | 0

### 2

answersQuestion

How do I fill a histogram in very high dimension if the array creating overflows memory?

I was trying to collect statistics of a 6D vector and plot a histogram for each coordinate. I get 729000000 version of this vect...

7 years ago | 1 answer | 0

### 1

answerQuestion

Why does squeeze transpose my matrices without my permission and how to stop it?

I have tensors of the following size 1 x 1 x D x M. I'd like to squeeze it such that we always have a matrix of size D x M. The ...

8 years ago | 2 answers | 1

### 2

answersQuestion

Using mex does not work but the link it directs me doesn't exist

I was trying to do mex -setup but it didn't work and gave me: Error using mex No supported compiler or SDK was ...

8 years ago | 2 answers | 0

### 2

answersQuestion

Why does the SQRT function or ^0.5 function return negative values in MATLAB?

I am taking square roots and MATLAB is returning, negative values, why is this? Let me show you the maths and the script that...

8 years ago | 1 answer | 0

### 1

answerQuestion

Is it possible to do operations on 3D matrices without explicitly creating one?

This might sound as a weird question but consider the following code: A = zeros(1,4,2); delta = [-1 -1 -1 -1; 2 2 2 2]; ...

8 years ago | 1 answer | 0