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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...

mer än ett år 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...

nästan 2 år 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...

nästan 2 år 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...

mer än 2 år 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...

nästan 4 år 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/

nästan 4 år 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...

ungefär 4 år 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...

ungefär 4 år 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...

ungefär 4 år 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?

ungefär 4 år 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...

ungefär 4 år 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?

ungefär 4 år 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

ungefär 4 år 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?

ungefär 4 år 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 ...

mer än 4 år 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?

mer än 4 år 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?

mer än 4 år 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,...

mer än 4 år 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 ...

mer än 4 år 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)....

mer än 4 år 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 ...

mer än 4 år 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...

mer än 4 år ago | 2 answers | 0

### 2

answersQuestion

How to use scatter with transparent dots?

facealpha is not working for me

mer än 4 år 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?

mer än 4 år 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!

mer än 4 år 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?

mer än 4 år 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.

mer än 4 år 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,...

mer än 4 år 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();

mer än 4 år 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...

mer än 4 år ago | 5