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Jon


Last seen: 3 days ago
365 total contributions since 2013

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Answered
generate multiple text files from a matrix
While I was working on this I see you have already received an answer. This is probably similar to what Mathieu has already subm...

3 days ago | 0

Answered
How to recover the original signal from a noisy signal?
You need to low pass filter the data and then downsample it. If you have the Signal Processing Toolbox you can do these togethe...

4 days ago | 0

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Function fitting on a set of data points
It seems like you are not using the parameters you just solved for when evaluating your function to plot it. Maybe you meant p...

4 days ago | 2

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How to generate a costant signal?
Here's an example that you can add to the bottom of your code %% Constant signal sigVal=3; % example value x_const = sigVal*o...

4 days ago | 1

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Answered
How to Remedy Matrix Dimensions Error
I think the + operator for strings was not available in 2012 you should instead concatenate the strings e.g. FM = [dir(fullfile...

5 days ago | 1

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Answered
Unable to perform assignment because the left and right sides have a different number of elements.
I'm sorry I don't have time to fully understand your code, from a quick look I think your problem may be in your function at lin...

6 days ago | 0

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Error using fmincon, Supplied objective function must return a scalar value.
I'm not quite sure about the details of your problem but I think you want to do something closer to this. Note the objective f...

6 days ago | 0

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Substitute s for jw in a transfer function
Hi, I think you mean that you define your transfer function using (you forgot the tf() in your example) G = tf([1 2],[3 4 5])...

7 days ago | 0

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Answered
how the series of 2 stable discrete-systems becomes unstable?
I think you are seeing some roundoff or other numerical issues. Higher order polynomials (in your case a 5th order polynomial) a...

7 days ago | 0

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Answered
Extracting values from Nyquist Diagram in a personalized way
Without seeing your whole code it is a little difficult to be sure what the problem is, but it is most likely that the range of ...

13 days ago | 0

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Answered
How to give my PI controller initial value?
If you want the inital output of your PI controller to be 1800 when the error signal is zero then set the initial value of the i...

13 days ago | 0

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New to matlab and not sure how to reduce to first order
Define y1 = y y2 = y' y3 = y'' % and then make a function f, for example put the code below into an m-file called f.m funct...

1 month ago | 0

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How do I update a variable in a nested loop?
If you want iter to increment inside of the inner loop you have to move the statement iter = iter+1; inside of the inner loop....

1 month ago | 0

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How to fix in Gauss formula
It looks like in your calculation of c in both the Jacobi and Gauss you should do a Matrix -vector multiply not an element by el...

1 month ago | 0

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Answered
How can I replace images inside a folder with another image from different folder?
If I understand what you are trying to do I think the copyfile function should do what you want Type doc copyfile on the comman...

1 month ago | 0

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Answered
How to create an array of files names from a structure created by 'dir' result?
This will put them into a cell array list = dir('*.txt') filenames = {list.name}

1 month ago | 1

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Correlation matrix graph using excel data
Get the data from the Excel worksheet into MATLAB matrices using readmatrix, then use MATLAB's corr function You can get docu...

1 month ago | 0

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How to combine two tables with measurements taken over the same range but different intervals?
Put the two sets of data into MATLAB timetables, then use the synchronize function to combine them

1 month ago | 0

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How can i start my systems response from 1 sec??
In Simulink, go to the Modeling tab, Modeling>Model Settings>Model Settings>Solver This will bring you to the Configuration Par...

1 month ago | 0

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Answered
How do i round to two decimals without zeros at the end
I think this might do what you want fprintf('Dog detected at second %0.2f\n',idx(:))

1 month ago | 0

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Answered
Dot indexing not supportedd
T = xlsread( ) returns an array of double values, not a table so T.xxx is not meaningful I suggest using readtable instead.

1 month ago | 0

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Breaking an algebraic loop
I usually put in a delay block with a relatively small value set for the one sample delay to break algebraic loops. If you use a...

1 month ago | 0

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How to find X value of given Y close to zero ?
Here's another approach that is maybe more obvious to understand x = [338.00 339.00 340.00 341.00 342.00 343.00] dat...

1 month ago | 0

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How to display data from a table using fprintf?
fprintf ('The Maximum Number of Cases Are: %d on %f', X.DAILYCASES,X.DATE)

1 month ago | 0

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converting matrix to constant value in matlab function (Simulink)
Try a MATLAB Function block with the following, this worked for me function y = fcn(u,m) y = min(u(u>m));

1 month ago | 0

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Answered
Select a range of rows in Excel
You should be able to use MATLAB's readmatrix function, e.g data = readmatrix('myfile.xlsx','Range','90:233') or if the start ...

1 month ago | 1

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Find group number from a range of data that is not fixed
Are your groups always as you show in your example? That is, group 1 = 1,2,..8 group 2 = 9, 10,..16, group 3 = 17,18, ...24 ?...

1 month ago | 2

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Answered
How to design a charging and discharging circuit for my supercapacitor using only Simulink blocks without the simpowersystems
In general to model charging a capacitor in Simulink I would think about it this way. Go back to fundamentals The voltage on a...

2 months ago | 0

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Answered
How to define Estimated Correlation Formula on MATLAB?
You are convolving y with itself and u with itself. You should be able to do this using the MATLAB conv function. You should al...

2 months ago | 0

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