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**Content Feed**

Question

How to fill end of rows of a matrix with NaN values?

I have a matrix M, and vector of indices K. I would like to make an element M(k,j) = NaN if j >= K(k). It is possible to do this...

environ un an ago | 2 answers | 0

### 2

answersQuestion

Why find cannot handle this very simple task?

X = -0.1:.001:.25; find(X == .077) I get the following: ans = 1×0 empty double row vector However X(178) = 0.077. How to ge...

plus d'un an ago | 2 answers | 0

### 2

answersQuestion

Why linsolve cannot solve this very simple equation?

A = [4,2,2; 5,1,3; 6,0,4]; B = [60; 70; 80]; X = linsolve(A,B) The solution should be 6, 7, 11, since: 4x6 + 2x7 + 2x11 = 60...

plus d'un an ago | 2 answers | 0

### 2

answersQuestion

Is it possible to determine within a function the location of that function?

Is it possible to determine the location (folder consisting that function) of a used function within the function? I dont want...

environ 2 ans ago | 1 answer | 0

### 1

answerQuestion

How to make raster circle with arbitrary high resolution?

Is it possible to plot a vectorized circle in MATLAB and save it to a pixelized raster figure with arbitrary high resolution? I...

plus de 3 ans ago | 1 answer | 0

### 1

answerQuestion

How to plot a smooth color wheel?

How to plot a smooth color wheel, like this? https://color.adobe.com/create/color-wheel/

plus de 3 ans ago | 1 answer | 0

### 1

answerQuestion

How to fit a line on the plane?

How to fit a line onto dots on the plane? polyfit is not the solution, because it is good for functions and not for points on th...

plus de 3 ans ago | 1 answer | 0

### 1

answerQuestion

How to plot nice thick line segments?

My problem is that there is a little gap or ugly corners when I try to use thick line segments after each other, see the followi...

plus de 3 ans ago | 0 answers | 0

### 0

answersQuestion

How to count first identical elements without a for cycle?

I have a vector [3 3 3 3 3 4 1 1 0 0 0 5 6 3 3 1 1 1], and I want to count threes at the begining of the vector, so the result h...

plus de 3 ans ago | 1 answer | 0

### 1

answerQuestion

There is no solution for global optimum search in Optimization Toolbox?

I have to buy the Global Optimization Toolbox?

presque 4 ans ago | 2 answers | 0

### 2

answersQuestion

How to count repetition of a row in a matrix?

I have a matrix: M = [1,2; 2,3; 1,5; 2,3; 1,4; 1,6; 2;3, 8,9]; And I want to check number of occurance of a given row, for examp...

presque 4 ans ago | 1 answer | 0

### 1

answerQuestion

Is it possible, or is it used to, or is it elegant to change input variables?

Is it possible, or is it used to, or is it elegant to change input variables/parameters of a function inside the function?

presque 4 ans ago | 3 answers | 0

### 3

answersQuestion

Is it possible to set all data(n).x = []; without a for cycle?

Is it possible to do the following withot a for cycle? for n = 1:N, data(n).x = []; end

presque 4 ans ago | 1 answer | 0

### 1

answerQuestion

How to define an object witch has parameters and functions?

How to define an object witch has parameters and functions?

presque 4 ans ago | 0 answers | 0

### 0

answersQuestion

How to maximize a function if I have both integer and continuous variables?

How to maximize a function if I have both integer and continuous variables? What is the right syntax? I have to use constraints ...

presque 4 ans ago | 2 answers | 0

### 2

answersQuestion

Is it possible to print color text in the command window?

Is it possible to print color text in the command window?

presque 4 ans ago | 1 answer | 2

### 1

answerQuestion

Is it possible to write local function in a function?

Or this is possible only for scripts and not for functions?

presque 4 ans ago | 1 answer | 0

### 1

answerQuestion

How to eval an expression without an error?

I would like to eval an expression, for example eval('x=a+b;'); But in case of non-existing a or b, I dont want to get an error,...

presque 4 ans ago | 1 answer | 0

### 1

answerQuestion

How to copy a structure without a field?

I have p with field1, filed2, filed3 (p(1).field1, p(2).filed1, p(1).filed2, etc.). I want to make a copy: q = p, but copy only ...

presque 4 ans ago | 1 answer | 0

### 1

answerQuestion

Is it possible to collect length of filed values without a for cycle?

Is it possible to fill the size vector fithout a for cycle? for i = 1:length(params) size(i) = length(params(i)....

presque 4 ans ago | 0 answers | 0

### 0

answersQuestion

How to check the existance of a struct field at a given index?

p(1).name = 'name1'; p(1).value = 1:10; p(2).name = 'name2'; I want to check existance of p(2).value, but exist and empty is ...

presque 4 ans ago | 1 answer | 0

### 1

answerQuestion

How to find a string in the following cell structure?

I have s{1}.name = 'abc', s{2}.name = 'xyz', ..., s{n}.name = 'something'. And I would like to know the existance of a strin mys...

presque 4 ans ago | 2 answers | 0

### 2

answersQuestion

How to use scatter with transparent dots?

facealpha is not working for me

presque 4 ans ago | 1 answer | 0

### 1

answerQuestion

Is it possible to use yticks only on one side?

Is it possible to use yticks only on one side? How to set?

presque 4 ans ago | 1 answer | 0

### 1

answerQuestion

What is the simplest way to extract lengths of NaN sequences from a vector?

What is the simplest way to extract lengths of NaN sequences from a vector? Plus the indices of their locations!

presque 4 ans ago | 2 answers | 0

### 2

answersQuestion

How to decrease line space between multiple lines in a title, tex or xlabel?

I know how to hack if I want to increase, but how to decrease?

presque 4 ans ago | 0 answers | 2

### 0

answersQuestion

How to catch warnings?

I want to catch Warning: Matrix is close to singular or badly scaled, during a matrix division A/B.

presque 4 ans ago | 2 answers | 2

### 2

answersQuestion

How to create matrix of all combinations?

Suppose I have variables x1, x2, x3. x1 can be any element of the set {1,2,3}, x2 can be {1,2,3,4,5} and x3 can be {10,11,12,13,...

environ 4 ans ago | 2 answers | 0

### 2

answersQuestion

Is it possible to use a function with 2 outputs and sometimes with 4 outputs?

And how to order the output variables? [x1,x2,x3,x4] = f(); or [x4,x3,x2,x1] = f();

environ 4 ans ago | 1 answer | 0

### 1

answerHow can I reposition the colorbar to not overlap my x-axis label?

Error using matlab.graphics.illustration.ColorBar/set There is no activepositionproperty property on the ColorBar class. set...

environ 4 ans ago | 5