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How to make MATLAB always start with the previous directory when using the menu?
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...
5 months ago | 0
| accepted
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...
6 months ago | 0
| accepted
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 ...
6 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...
6 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...
6 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 ...
6 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...
6 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...
6 months ago | 1
| accepted
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...
7 months ago | 1
| accepted
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...
8 months 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('...
8 months 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...
8 months 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');...
8 months 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 ...
8 months 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...
8 months ago | 0
Channel
Urban Informatics
IoT dashboard demonstration for the Urban Informatics course.
8 months 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 "...
8 months ago | 1
| accepted
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...
9 months 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)' ...
9 months 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]...
9 months 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_...
9 months 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...
9 months 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'; ... ...
9 months 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...
9 months 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 ...
9 months 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...
9 months ago | 0
How to input corresponding data from separate matrices
A = [1 2 3 4 5 6 7 8 9 10]'; B = [ 2 3 1 7 9 10 4 6 5 8; 12 43 64 94 27 58 64 13 90 74]'; % Iterate over every element of A ...
9 months ago | 0
Add one year to date
You can use the datetime and years commands to do what you want: date = '2022-01-05'; d = datetime(date) d1 = d + years(1) s...
9 months ago | 0
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How to pad zero in string using sprintf
This should work on both char arrays as well as strings: a = { '1010' '111' '010' '10' '101...
9 months ago | 2