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# Mr M.

Last seen: circa 2 anni fa Attivo dal 2014

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Domanda

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...

circa 2 anni fa | 2 risposte | 0

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Domanda

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...

circa 2 anni fa | 2 risposte | 0

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Domanda

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...

circa 2 anni fa | 2 risposte | 0

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Domanda

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...

circa 3 anni fa | 1 risposta | 0

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Domanda

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...

circa 4 anni fa | 1 risposta | 0

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Domanda

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

circa 4 anni fa | 1 risposta | 0

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Domanda

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...

circa 4 anni fa | 1 risposta | 0

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Domanda

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...

circa 4 anni fa | 0 risposte | 0

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Domanda

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...

oltre 4 anni fa | 1 risposta | 0

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Domanda

There is no solution for global optimum search in Optimization Toolbox?
I have to buy the Global Optimization Toolbox?

oltre 4 anni fa | 2 risposte | 0

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Domanda

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...

oltre 4 anni fa | 1 risposta | 0

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Domanda

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?

oltre 4 anni fa | 3 risposte | 0

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Domanda

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

oltre 4 anni fa | 1 risposta | 0

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Domanda

How to define an object witch has parameters and functions?
How to define an object witch has parameters and functions?

oltre 4 anni fa | 0 risposte | 0

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Domanda

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 ...

oltre 4 anni fa | 2 risposte | 0

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Domanda

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

oltre 4 anni fa | 1 risposta | 2

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Domanda

Is it possible to write local function in a function?
Or this is possible only for scripts and not for functions?

oltre 4 anni fa | 1 risposta | 0

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Domanda

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,...

oltre 4 anni fa | 1 risposta | 0

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Domanda

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 ...

oltre 4 anni fa | 1 risposta | 0

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Domanda

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)....

oltre 4 anni fa | 0 risposte | 0

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Domanda

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 ...

oltre 4 anni fa | 1 risposta | 0

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Domanda

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...

oltre 4 anni fa | 2 risposte | 0

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Domanda

How to use scatter with transparent dots?
facealpha is not working for me

oltre 4 anni fa | 1 risposta | 0

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Domanda

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

oltre 4 anni fa | 1 risposta | 0

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Domanda

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!

oltre 4 anni fa | 2 risposte | 0

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Domanda

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?

oltre 4 anni fa | 0 risposte | 2

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Domanda

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

oltre 4 anni fa | 2 risposte | 2

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Domanda

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,...

oltre 4 anni fa | 2 risposte | 0

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Domanda

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();

oltre 4 anni fa | 1 risposta | 0

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Risposto
How 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...

oltre 4 anni fa | 5