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# Mr M.

### Hungarian Academy of Science

377 total contributions since 2014

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Question

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...

1 year ago | 1 answer | 0

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Question

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

1 year ago | 1 answer | 0

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Question

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...

1 year ago | 1 answer | 0

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Question

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...

1 year ago | 0 answers | 0

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Question

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...

1 year ago | 1 answer | 0

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Question

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

1 year ago | 2 answers | 0

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Question

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...

1 year ago | 1 answer | 0

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Question

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?

1 year ago | 3 answers | 0

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Question

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

1 year ago | 1 answer | 0

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Question

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

1 year ago | 0 answers | 0

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Question

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 ...

1 year ago | 2 answers | 0

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Question

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

1 year ago | 1 answer | 0

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Question

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

1 year ago | 1 answer | 0

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Question

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,...

1 year ago | 1 answer | 0

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Question

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 ...

1 year ago | 1 answer | 0

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Question

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)....

1 year ago | 0 answers | 0

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Question

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 ...

1 year ago | 1 answer | 0

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Question

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...

1 year ago | 2 answers | 0

### 2

Question

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

1 year ago | 1 answer | 0

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Question

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

1 year ago | 1 answer | 0

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Question

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!

1 year ago | 2 answers | 0

### 2

Question

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?

1 year ago | 0 answers | 1

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Question

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

1 year ago | 1 answer | 2

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Question

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,...

1 year ago | 2 answers | 0

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Question

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();

1 year ago | 1 answer | 0

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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...

1 year ago | 3

Question

How to use different colorbars on subplots?
As far as I see, I cannot define different colormap, caxis, colorbar, because MATLAB wants to use the last one for both subplots...

1 year ago | 0 answers | 0

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Question

Is it possible draw left y-axis with red color and the right y-axis with blue color?
and use different colors for the left ylabel and right ylabel?

1 year ago | 1 answer | 0

### 1

Question

How to plot just a colorbar without plot?
I would like to plot just a colorbar on a subplot without real figure. I can do this, but I want to shrink the figure area. How ...

1 year ago | 1 answer | 0

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Question

How to make axis line invisible but keep xlabel and ylabel?
I tried axis off, or set(gca,'xcolor','w'), but the problem is I want to keep the xlabel, morover white color is not good for me...

1 year ago | 1 answer | 1