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Erivelton Gualter


Cleveland State University

Last seen: 4 months ago |  Active since 2018

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https://eriveltongualter.github.io/

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Question


How to replace string that perfectly matchs the string?
The title might be a litle vague, but I am looking to replace a string on a text by another string using regexprep or any other ...

4 years ago | 1 answer | 0

1

answer

Question


Replace group of special character with a single character
Hello everyone, I have a question related to regular expression. Let's say I have the following string: str = vertcat(... ...

4 years ago | 1 answer | 0

1

answer

Answered
how can i read data given from a txt file and plot graph
You may check this other anser related to import data: https://www.mathworks.com/matlabcentral/answers/460098-import-text-data-...

5 years ago | 0

Answered
Randomly dividing an integer (non-uniform distribution)
How about you generate n variable from a desired range. For example: n = (b-a)*rand(1,M)+a; So you have, % Range a = 0.01; ...

5 years ago | 1

Answered
How to smooth the plot graph?
After you plot the position profile add the following code: for i=5:30; p = polyfit(time, theta,i); y1 = polyval(p,ti...

5 years ago | 0

Answered
Runge Kutta 4th order
Your code seems to have some issues. Try this one: h = pi/10; x = 0 : h : 2*pi; n = length(x); y = zeros(2,n); y(:,1) =...

5 years ago | 1

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Answered
How to view plotting in real time
Hi Mekala, Alternatevely, you can run the follow code: x = [1,2,3,4,5,6,7,8,9]; y = [1,2,3,4,5,6,7,8,9]; figure; hold on...

5 years ago | 1

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Answered
Using specific color vector in plot
Hi Kelsey, You need to use the attribute 'color'. See the following example: plot([0 1], [0 1], 'color', [1 0 0])

5 years ago | 0

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Answered
lambda function with if statement
You can use the following line of code: X = @(om) (1*(abs(om)==1) + 0*(abs(om)~=1));

5 years ago | 2

Answered
Compare output with each row and column from a table.
You might create a function to perform this task, an dyou call it as many times you desire. % function return status function...

5 years ago | 0

Answered
Variable changes to previously calculated value each iteration.
Since T is an array and you are using a for loop to find each value of p2(T), you should you T(i) instead of T. Check the co...

5 years ago | 0

Answered
HOW CAN I CREATE A MATRIX FILE FROM 3 EXCEL FILES
First, there is several ways to import data into Matlab. CHeck the following link: https://www.mathworks.com/help/matlab/import...

5 years ago | 0

Answered
Count size of groups of 1's
Here is a way you can perform this: gpos = [1 1 1 0 0 1 1 0 1 1]'; [I, ~] = find(gpos == 1); k = 0; result = []; for i=...

5 years ago | 0

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Answered
Import Text Data As a Numeric Matrix with Specific Delimiters
I am not sure about older versions of Matlab, but for R2018b you can import data by clicking with the right button in the mouse ...

5 years ago | 1

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Answered
How to keep colorbar without changing the figure size?
You can set the desired size of the figure. For example: figure(1); % Figure 1 with out colorbar surf(peaks); % Ge...

5 years ago | 0

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Question


Find Child Subexpressions of Symbolic Expression
I believe the function children might have a problem. Acording to the documentation it returns a cell array containing the child...

5 years ago | 1 answer | 1

1

answer

Answered
How to multiply all values in the diagonal of a matrix by -1 in Matlab?
Hi Augustin, This may help you a21 = 1:1:5; c3 = tril((repmat(a21,[5 1]))'.^2, -1) + triu((repmat(a21,[5 1])).^2); ...

6 years ago | 1

Answered
plotting a plane in three dimensions including data points
Run the following code: [x y] = meshgrid(-10:1:10); z = 2.*x + 3.*y + 4; surf(x,y,z); To add the data you can add...

6 years ago | 3

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Answered
How to hide the obscured portion of the lines in 3D line plot using plot3 command ??
You may check the properties of the surf function ( <https://www.mathworks.com/help/matlab/ref/surf.html> ). I am sure if you pl...

6 years ago | 0

Answered
Selecting four elements then starting again.
Check the following code. I am not sure that is what you need, but it performs what you said in my understanding. A = ...

6 years ago | 0

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Answered
Create a matrix that contains sine wave
Try this: t=0:0.001:1; x=zeros(5,length(t)); for fi=1:5 for i=1:length(t) x(fi,i)=sin(2*pi...

6 years ago | 1

Answered
I am using pzmap where poles and zeros are ploted but my question how can i see poles on unit circle only not zeros?
You can extract the pole and zeros and construct your model again using zpk for example. Check the following example: ...

6 years ago | 0

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