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Denis Perotto


Last seen: 7 days ago |  Active since 2017

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Answered
An external program (.exe) started with "system" terminates early
In case somebody encounter the same problem. I created an additional RunExe.exe in C# that runs my main my.exe (written in C++) ...

7 months ago | 0

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An external program (.exe) started with "system" terminates early
I have a console application that computes a complicated function and outputs a text file with a resulting value. This applicati...

7 months ago | 1 answer | 0

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imshow displays black instead of transparent background of png image
I need to display a .png image that has transparent background in a figure. I also need to change the transparency of its solid ...

10 months ago | 1 answer | 0

1

answer

Question


Split array into groups of close numbers
Greetings, Is there a built-in function in MATLAB to split an 1D array into groups of close numbers? For example, I have an ar...

12 months ago | 2 answers | 0

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Answered
How can I plot 3D contour plot for (x, y, z) Cartesian grid with values at each cell?
Download free Paraview (visualization tool) from https://www.paraview.org/download/. It will cost you some time to deal with VTK...

5 years ago | 0

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Different grid lines color in MATLAB
Is it possible to change color of every single grid line? Not only for all X or Y lines. I only know it is possible to change a...

5 years ago | 1 answer | 0

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Question


Which is the fastest way to plot several 2D contours on one 3D plot?
I need to plot several 2D rectangle contours on one 3D plot like this: To plot these contours I have more than 200000 dots wi...

5 years ago | 1 answer | 0

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Question


How to plot 3D contour in real-time for the shortest time?
I need to plot 3D contour in real-time layer-by-layer. I got it already, that MATLAB does not have a standard function for 3D co...

6 years ago | 0 answers | 0

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Answered
How to conveniently plot iteration progress during a 2D optimization?
First, you should create your own function for plotting a 3D contour during the optimization process: function stop = custom_pl...

6 years ago | 0

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Question


How do I bind a specific value to a color using colormap?
I'm plotting a 2D contour plot using contourf(X, Y, Z). How can I create a custom colormap, where certain color would be bound t...

6 years ago | 2 answers | 0

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answers

Question


How to calculate a derivative of function numerically?
I have a continuous function of two variables: f = @(x,y) x.^2 + (y-1).^2 How do I calculate a derivative of this functi...

6 years ago | 2 answers | 1

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Answered
Error in matlab?
Are you sure, that these equations aren't wrong? For example, you can divide 3rd equation by i. The system is nonlinear and MATL...

6 years ago | 0

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How to add variables to the Plot Fcn?
I created a custom Plot Function for 'fminsearch': opts = optimset('Display','iter','TolFun',1e-5,'MaxIter',100,'PlotFcns',...

6 years ago | 2 answers | 0

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How to read a text file having strings and numeric data?
I have a 'txt' file with strings and numbers like this: PATH VARIABLE SUMMARY ...

6 years ago | 1 answer | 0

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Answered
Summing several function values
Well, I can't get it, but integral(@(x)ft(x,k),0,pi./2) -> integral(@(x)ft(x,k),0,pi./2,'ArrayValued',true) ...

6 years ago | 0

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Question


Summing several function values
Hello everyone I'm trying to use 'sum' to sum up several function values like this: ft = @(x,k) sin(k.*x); at = @(k) ...

6 years ago | 2 answers | 0

2

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Error declaring and summing array of functions - Cell contents assignment to a non-cell array object
I need to sum four functions with common data like this: TE1 = [180 310 455 600; 0.18 0.25 0.34 0.41]; S = [16.6 19.2 21...

7 years ago | 1 answer | 0

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