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# Jon

Last seen: ein Tag vor Aktiv seit 2013

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Beantwortet
Can someone help me open a Simulink file from an old version of matlab? (probably around year 2000)
I am able to open old Simulink .mdl files from around 1999-2000 using my MATLAB Simulink R2022b without taking any specific acti...

ein Tag vor | 0

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Saving the timestamp for each iteration in an array
You had numerous errors in your code. A key one is that you were writing the sensor data and time to the same column (B1). Since...

ein Tag vor | 0

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How to get z transfer function from difference equation?
I don't think there is any direct way to convert a difference equation to a transfer function in MATLAB. Maybe it is possible wi...

2 Tage vor | 1

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Find the set of eigenvectors of a 4x4 matrix elements whose matrix elements have some VARIABLE PARAMETERS.
If I understand what you are trying to do I think this should do what you want. The resulting values of the eigenvector for eac...

20 Tage vor | 1

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How can i plot this function? y=0.75/(log10(x)*2).^2
Something like this? x = linspace(1,10); % or whatever interval you would like change accordingly y = 0.75 ./(log10(x).^2).^2 ...

etwa ein Monat vor | 0

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Why do I receive "Index exceeds the number of array elements. Index must not exceed 7." when trying to remove indices that are followed directly by a zero using a for loop.
Your loop variable x goes from 1 to the length of the vector. In line 4 you try to assign vec(x+1), on the last iteration x = l...

etwa ein Monat vor | 0

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Only the initial graph shows up
The problem is that you have an error in your line Error using legend Invalid argument. Type 'help legend' for more informatio...

4 Monate vor | 1

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Beantwortet
How to simplify code with multiple variable names?
You can use arrays to hold your data. So one approach would be to use arrays: ma - n by 1 ea - k by n r - n by 1 ir n by 1 ...

4 Monate vor | 0

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Beantwortet
Hello, I need help with: Replace elements in Vector A with those of vector B of the same position, only if they meet a certain condition, otherwise replace by a zero. Thanks
I like @Torsten's one liner and use of the multiplication times the logical zeros to null out the values where B is greater than...

4 Monate vor | 0

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Beantwortet
My loop does not produce the results I want, due to coding errors
I have made numerous corrections in your code. I think this is now at least closer to what you want clc; clear; x0 = 0; y...

4 Monate vor | 0

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Beantwortet
How to plot many figure with For function?
Uncomment the line in your code that assigns the figure number So for i=1:20 figure(i) plot(array(:,1),array(:,i)) end

4 Monate vor | 0

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Beantwortet
How to solve a system of two linear equations in matrix form under a loop /
I'll assume you know how to calculate A and B based upon your c and T values. Then to solve for X use X = M\(J*A + B) Note tha...

4 Monate vor | 0

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Bode diagram for a Butterworth filter
What specific problems or errors are you getting? Here is an example that maybe you can adapt to your situation fs = 1000; % sa...

4 Monate vor | 0

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function for cell array
Here's a simple example % Make an example cell array with a vector in each cell A = cell(2,3); % preallocate for i = 1:2 ...

4 Monate vor | 0

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Write a function largest () such that it can accept multiple numbers and return the largest item from the given list.
There is already a MATLAB function that "can accept multiple numbers and return the largest one" x = [2,15,23.7,91.4,80.3] % ve...

4 Monate vor | 0

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How can I plot a curve while changing color every N points ?
I was coding up the example below, and by the time I posted I saw you already had an answer from @Cris LaPierre. I will still in...

4 Monate vor | 0

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Beantwortet
fprintf for ~million row string matrix
You could try writecell and see if that is more efficient.

4 Monate vor | 0

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Plotting multiple .txt files
You could do something like what is shown in this simplified example % Get a list of all of the text files list = dir('*.txt...

4 Monate vor | 1

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4 Monate vor | 0

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How can I use the ( nchoosek ) for this case nchoosek(x,y) where x=[1:1:80] , and y=64;
Using b = nchoosek(80,64) You will see that there are approximately 2.6958 E16 ways of choosing 64 elements out of your vecto...

4 Monate vor | 0

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I have a 4 Dimensional Matrix and i want to get its transpose
You can use the MATLAB permute function for this and not use any loops https://www.mathworks.com/help/matlab/ref/permute.html

4 Monate vor | 1

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Modelling a variable (i.e. nonlinear) capacitor in Simulink: how to make it stable?
It looks like you may be using some circuit block set that I don't have available, however just going back to fundamentals you c...

5 Monate vor | 0

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Beantwortet
Matlab fails to launch appdesigner or open .mlapp files
Not really clear what is going on here, but it looks like you have a file called ComponentController.m whose error is preventing...

5 Monate vor | 0

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Beantwortet
Update App GUI with Simulink data in real-time
Please provide a little more context. From what you describe it sounds like your Simulink model has an interpreted MATLAB functi...

5 Monate vor | 0

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How can I find the magnitude of a vector B when I know the unit vector B, the vector A and the result cross product of AXB?
Lets say you have the final Torque, and arm as a three element vectors T, and A respectiviely. Then I think the magnitude of th...

5 Monate vor | 0

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How i can find the difference between 2 values.
y = T1 - T2

5 Monate vor | 0

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command strategy for converting the following multi table text file into matlab array
If you don't know how many rows there are in each data set or where the data rows begin and end then you could do this: % read ...

5 Monate vor | 0

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Beantwortet
How to take the average of 7 rows then other 7 until the data finished and save into new tab of excel
Read the data in using readmatrix. Once you have read the table into an m by 150 array, let's call it A, then just use movmean ...

5 Monate vor | 1

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Beantwortet
I am getting data values as 1 x 100. How to reduce it to 1x6 i.e, require values of y w.r.t x at 0.2 0.4, 0.6, 0.8
I don't have the symbolic toolbox, but in ordinary MATLAB you would use interp1 for this

5 Monate vor | 1

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Beantwortet
How to make a matrix with mixed string and number elements ?
Here's another approach, not so nicely vectorized as @Adam Danz, in which I store the values in a cell array I hadn't known abo...

5 Monate vor | 0