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# Bora Eryilmaz

### MathWorks

Last seen: 8 days ago Active since 2011

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How to graph the basic reproduction number R0 against two parameters on a 3D plot with planes?
The equations and plots in the article look inconsistent. For example, Eq. 3.21 seems to be missing a 1/mu term when they replac...

3 months ago | 1

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Solved

Arrange Vector in descending order
If x=[0,3,4,2,1] then y=[4,3,2,1,0]

8 months ago

Yes, as long as you start MATLAB from a shortcut icon on your desktop, you can set the "Initial Working Folder" setting in the P...

10 months ago | 0

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Bandpass Filter Command Question
You need to use brackets, not parentheses: y = rand(200,1); Fs = 100; % Sampling rate, e.g., 100 Hz d = bandpass(y, [1,30], F...

11 months ago | 0

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Is there a function like movsum which simply gets the values in a given sliding window rather than summing them?
If you have access to the Predictive Maintenance Toolbox, you can use the phaseSpaceReconstruction command: x = [1 2 3 4 5 6 7 ...

11 months ago | 0

how to print datetime in fprintf
You can convert datenum data to datetime data and set its format to the one you desire: d = datenum(2023, 4, 13); dt = datetim...

11 months ago | 0

Error Brace indexing is not supported
Your imageFileNames variable is not a cell array, so you cannot use brace indexing with it. It is a long char array with words s...

11 months ago | 0

Plotting x-axis time in dd hh mm ss format
You can use the datetime data type for the x-axis values and adjust the date/time format as you like: now = datetime; x = now ...

11 months ago | 0

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Matlab get transfer function from Simulink
Yes. It is called linearization. If you have access to the Control System Toolbox and/or Simulink Control Design, you can use li...

11 months ago | 0

Stepinfo for time delayed systems
s = tf('s'); G = (1/(s+1))*exp(-2*s) % Step response information step(G) stepinfo(G) % Time delay of the system G.Inpu...

11 months ago | 1

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The lyapunovExponent function in the Predictive Maintenance Toolbox gives incorrect result when the input signal has angular frequency a multiple of \pi
When the signal is periodic, with no noise, the nearest neighbor of each data point in the signal on the phase plane will be ess...

1 year ago | 1

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Matlab built-in function not identified
coefTest is not a "function". It is a "method" of the LinearModel object/class. So, in order to call it, you need to create a li...

1 year ago | 0

I am confused about why my code doesn't lead to a fitting result.
If you print out the exception inside the catch block, it will tell you what the error is. catch ME ME fprintf('...

1 year ago | 1

Argument to dynamic structure reference must evaluate to a valid field name Error occurs when using properties
Looks like you might be trying to access the content of RTD before populating its cells with the right table content first. % T...

1 year ago | 0

How do I know the length from the center of the object to the vertical axis edge and the horizontal axis edge?
You can do something along these lines, where the location of the centroids seems like what you want: I = imread('image.jpeg');...

1 year ago | 0

How can I save figures when created in a loop?
Use the saveas command to store the figure in a folder. If the folder is not there, you can use the mkdir command to create the ...

1 year ago | 0

Create non-visible message dialog box
One option is to not create all four dialog at once. Just create the dialog that needs to be visible at the time and store its h...

1 year ago | 0

Channel

Urban Informatics
IoT dashboard demonstration for the Urban Informatics course.

1 year ago

How to clear workspace from a function?
Functions do not keep their variables across calls to them unless a variable is specifically defined in the function using the "...

1 year ago | 1

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Comparing two curve fits (using AIC?)
The lsqcurvefit returns the residual norm of the fit. The model that has the least residual norm would be the "best" one by this...

1 year ago | 0

Multiply structure by a constant
You have to cycle through the individual fields of the structure: s = struct('a', [1 2 3 4], 'b', -1) for f = fieldnames(s)' ...

1 year ago | 0

Plotting date and time
tdata = { ... '04/07/2022 18:00', ... '05/08/2022 19:30', ... '06/08/2022 11:30' }; ydata = [10, 20, 15]...

1 year ago | 0

closest value to zero excluding the first one?
load('var.mat') [~,I] = sort(abs(dis_y), 'ascend'); % Closest value to 0: dis_y(I(1)) % Second closest value to 0: dis_...

1 year ago | 0

I am getting the message "execution of script matlabtb as a function not supported"
See the note in the documentation page: https://www.mathworks.com/help/hdlverifier/ref/matlabtb.html "Enter this command in the...

1 year ago | 0

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How to arrange input fields straight below each other using inputsdlg?
You won't get perfect alignment, but you can pad the prompt strings with empty spaces: prompt = {... 'ParticipantID'; ... ...

1 year ago | 0

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Unable to read data from text file in matlab
The file your are looking for is probably not there, or at least, not on the MATLAB path. See what fid is: if it is -1, then you...

1 year ago | 0

Why doesn't the for loop work?
p = isprime(p) gives you a logical vector, similar to p = [true true false true] When you try to assign i to p(i) it converts ...

1 year ago | 0

Error: Not enough input arguments
There are probably other array concatenation issues in your equation definitions, but regarding your current issue, remove the c...

1 year ago | 0