# Jon

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**Content Feed**

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...

2 months ago | 1

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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 ...

2 months ago | 0

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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...

2 months ago | 0

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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...

2 months ago | 0

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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

2 months ago | 0

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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...

2 months ago | 0

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...

2 months ago | 0

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 ...

2 months ago | 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...

2 months ago | 0

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...

2 months ago | 0

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fprintf for ~million row string matrix

You could try writecell and see if that is more efficient.

2 months ago | 0

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...

2 months ago | 1

Loading .log data with different number of columns

Yes, I would also recommend readcell, so for example logdata = readcell('Example.log','NumHeaderLines',2) You could then mak...

2 months ago | 0

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...

2 months ago | 0

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

2 months ago | 1

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...

2 months ago | 0

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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...

2 months ago | 0

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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...

2 months ago | 0

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...

2 months ago | 0

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 ...

2 months ago | 0

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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 ...

2 months ago | 1

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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

2 months ago | 1

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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...

2 months ago | 0

matlab function to simulink error

I think it looks like you are not using the "MATLAB Function" block correctly. If you open that block, maybe you just have the ...

2 months ago | 0

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Table to Array conversion using a for loop

I agree with @Stephen23 comments about not using dynamically named variables, here's another approach, in which you store all of...

3 months ago | 0

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If else -statement doesn't work

Actually you can do this in just one line using MATLAB discretize taAct.actClass = discretize(taAct.Sum,[0,30,40,60,inf]) - 1 ...

3 months ago | 1

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up or down counting based on input signal value

This is one approach, the counter will increment at each sample time of the delay block (z^-1). You can set that parameter in th...

3 months ago | 0

How to reduce the computation time of for loop?

With the code you show, it appears that the values of S1, Sc_win, and S do not change as a function of any of the loop variables...

3 months ago | 0

remove missing entries from cell array

I think you are close, just use new_cell_array= cellfun(@rmmissing,old_cell_array,'UniformOutput',false)

3 months ago | 0