Answered
Unable to read datetime with format "0600 UTC OCT 25"
t = "1200 UTC OCT 10" td = datetime(t,'InputFormat','hhmm ''UTC'' MMM dd')

5 months ago | 0

Answered
Comparing elemental composition with databank
Here is one approach, in which I put the data into tables and then use ismembertol to to do the comparision with a tolerance. I ...

5 months ago | 0

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Question


How to avoid recursion in property set functions
I have an application where I would like to perform some additional operations when a property of a handle class is changed. For...

5 months ago | 1 answer | 0

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answer

Answered
Delete Table Rows based of certain characters in a row
I think this is a simple example of what you want to do name = {'cat','dog','fish','bear'}' weight = [3,25,8,300]' T = table(...

5 months ago | 0

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Answered
Error using == Arrays have incompatible sizes for this operation. How solve this error??
The error is telling you that the dimensions of your variable named, area are not equal to the dimensions of the variable called...

5 months ago | 0

Answered
Code shows matrix is singular to working precision. How can I fix it?
Consider your matrix A'A. If you take a column matrix, in your case A' and multiply it by a row, in your case, A, then every co...

6 months ago | 0

Answered
I need to close excel file before importing data
I looked a little more on MATLAB answers and saw that this issue was previously described, and is a known issue for the Mathwork...

6 months ago | 0

Answered
Unrecognized function or variable when calling a LinearModel from a Simulink Interpreted Function block
When I make an example following the steps you provide it runs without errors. Please attach your script, and Simulink model. I...

6 months ago | 0

Answered
Average Moving filter in Simulink
You could do it like this using just the discrete transfer function block included with Simulink>Discrete>Discrete Transfer Fcn,...

6 months ago | 0

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Answered
Split data based on column value to write in different sheets in excel
You could do it like this % Parameters filename = "myfile.xlsx" % Example data A = [ 1 45 45 1 34 ...

6 months ago | 1

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Answered
Collating data from different sources
You could use this approach c1 = { 'A' 'B' 'C' 'D' 1 5 4.1 "a" 2 ...

6 months ago | 0

Answered
How to make a humidifier on Simulink
Looking quickly I think these two model humidifiers using Simulink without Simscape. https://huei.engin.umich.edu/wp-content/up...

6 months ago | 0

Answered
How to make a random circularly-symmetric gaussian distributed additive noise component with mean 0 and variance (sigma^2)/2?
Using your code and plotting results, qualitatively it looks like you are getting two circularly symmetric distriuted sets of da...

6 months ago | 1

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Answered
error setting gram()
It is most likely that the value for t that you are passing to this function is not a scalar. It must be a scalar for [0 t] to b...

6 months ago | 0

Question


What is a simple way to check if a collection of vectors all have the same number of elements
I am look for a nice simple way to check if a collection of vectors all have the same number of elements. For example this migh...

6 months ago | 2 answers | 0

2

answers

Answered
Concatenate two structures from a starting point
I think this example shows how to do what you are asking for % Make some example data d1 = datetime(2023,1,10):days(1):datetim...

6 months ago | 0

Answered
why am I getting the error "Incorrect number or types of inputs or outputs for function 'step."
This runs for me in R2023b, what version are you running? If I look at the actual step.m file in my directory, which comes up as...

6 months ago | 0

Answered
Change variables in the base workspace through a Matlab Function block
I would suggest using the "Interpreted MATLAB Function" block for this purpose. It doesn't need to get compiled. It is under Si...

6 months ago | 2

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Answered
Identifying regions in matrix rows
I wasn't completely clear from your description what output you wanted, but I think this is what you were looking for. Still lo...

6 months ago | 1

Answered
How to make Simulink read a MatLab variable every 5 seconds?
You can do this using the set_param function. I have attached an example Simulink model and script you can run to demonstrate th...

7 months ago | 2

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Answered
Why does it take MATLAB so long to print hello world?
I'm not sure how you are running your test, running this script inside this online environment seems to indicate it is very f...

7 months ago | 0

Answered
row ranking among multiple matrices
Similar to @Bruno Luong, but since I already coded up example before I saw @Bruno Luong's I will provide it as alternative here ...

7 months ago | 1

Answered
How to extract and to export to Excel some variables that have been logged using To Workspace block?
There are many ways to do this. I have attached a simple example showing one way to do it with the data being saved in timeserie...

7 months ago | 1

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Answered
"Insufficient number of outputs from right hand side of equal sign to satisfy assignment." in Simulink
I found that if I changed the "Simulate using" parameter on the DUC from Code Generation to Interpreted execution, the model ra...

8 months ago | 0

Answered
Scatter plot with variable symbol size - it's not linear
According to the documentation for scatter, the size in "points squared" units, try this x = 1:100; y = ones( size(x) ); scat...

8 months ago | 0

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Answered
Delete rows from a table below a certain threshold
% Make up some example data Time = [1:10]'; Data = randn(10,1)*10; Table = cat(2,Time,Data) Threshold = 8; % Delete rows ...

8 months ago | 0

Answered
FFT of bearing signal
In the attached code, I independently calculated the spectrum and compared to your calculation. It seems correct that your data ...

8 months ago | 0

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Answered
Use files from multiple folders
Yes, this is possible. You can either open the file using the full path to the file, for example im = imread('c:/mystuff/myvid...

8 months ago | 1

Answered
Multiple dropdown inputs to narrow down file options in App Designer
I have attached a very simple example of how you might have the choice from one drop down menu change the possible choices from ...

8 months ago | 0

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Answered
trying to find a linear combination of matrixes in order to minimize the error between the linear combination and a target matrix
Here's a much more elaborate approach that can be modified to use a specific choice of matrix norm to be minimized. I would use ...

8 months ago | 0

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