Benjamin Thompson
C++, C, MATLAB
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Contribute at least one answer each month for 12 consecutive months
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Content Feed
fft2 results don't match the analytical Fourier transform results
Your problem is 201 by 201 samples in size? Making the size a power of 2. So use 256.
11 jours il y a | 0
Real Time Low Pass Filtering
All digital filters working in real time must have some delay, this is a law of filtering in general. The amount of delay depen...
environ 2 mois il y a | 0
Image analysis for speckle pattern
It is possible, try looking over this example: https://www.mathworks.com/help/images/correcting-nonuniform-illumination.html ...
environ 2 mois il y a | 0
How to break data in to groups using while loop?
Even better, use the vectorization features in Matlab to count NaNs in each row all at once. nanCounts = sum(isnan(matrix),1); ...
environ 2 mois il y a | 0
Replacing specific block with subsystems
Here is one way. I think you would just use a constant block rather than From Workspace because From Workspace is looking to us...
environ 2 mois il y a | 0
| A accepté
I need to know how to use the for command to calculate y=2/x
x = 1:10; y = 2 ./ x;
4 mois il y a | 0
How do I re-use values calculated in a while loop?
Theta1 and Theta2 have not been defined and given a value at the first reference. You should assign an initial value to Theta1 ...
4 mois il y a | 0
How do i find the RGB values of color image in range 1 to 255
If the image is stored in MATLAB as a three dimensional array, which is the usual, then the red/green/blue channel is the third ...
4 mois il y a | 0
How to create these shapes in Matlab
Where is the m-file referenced in the problem statement? That would probably help on some of the coding structure questions. Y...
4 mois il y a | 1
| A accepté
Measurement of properties from Tiff image
If you are using the Image Processing Toolbox then you are probably trying to use the regionprops function with the "Area" prope...
4 mois il y a | 0
Not able to use the if condition as desired in simulink
You need to use the "if action" subsystem along with the "if". See the example in the documentation: https://www.mathworks.com...
4 mois il y a | 0
| A accepté
How to copy 30K images from folder to another according to the names in train and test text listes
Use copyfile to copy a file to a new location. You could probably use arrayfun to more quickly add the full file path to the fi...
4 mois il y a | 0
Finding average data from a large data matrix
An index vector over the available columns would work well here. Cannot be sure without a complete example of the data. Then p...
4 mois il y a | 0
| A accepté
Coalesce data from 1000 monte Carlo simulations with different data file lengths?
With the data import tool you can generate a function like this. It needs some editing to handle some of the odd formatting of ...
5 mois il y a | 0
Avoid a "loop for" to add multiple "datetime" elements to a cell array
If you can make is an N by 1 cell array and do the assignment using parenthesis indexing and num2cell, then convert that to the ...
5 mois il y a | 0
Create Integral, Differential, timer and counter blocks from basic blocks in simulink
You can use a Memory block, subtraction block, and gain block to approximate a differentiator, implementing the equation dx/dt =...
5 mois il y a | 0
How to make the flow diagram with if or any hint in Simulink?
A Stateflow chart is usually the best way to model a state diagram in Simulink. Try following the Stateflow Onramp training too...
5 mois il y a | 0
How to get the equation of irradiance varying in time for a PV model under partial shading conditions?
Simulink has a 2D lookup table block with various options for interpolation, extrapolation, and fitting. With the two inputs be...
5 mois il y a | 0
Hold the value of a signal
You can use the signal builder block to define any type of piecewise continuous signal you want.
5 mois il y a | 0
How to pass an input value to a Simulink block from M-file?
Your M file can put the data into the base workspace as a variable with a known name. Then your Simulink model can use the From...
5 mois il y a | 0
| A accepté
How to change the color of each pixel in a masked image?
See if this helps. There is probably a faster way to do it with color mapping functions in the Image Processing Toolbox but it ...
5 mois il y a | 0
I gave the initial condition correctly still the program not working.
circshift returns a vector of the same length as its input. So, j2, j5, j8, and j19 are vectors and not scalar values as the li...
5 mois il y a | 0
How can I merge two structs?
Due to the need to merge it might be easiest to use struct2table, table2timetable, make sure it is merged well as a time table, ...
5 mois il y a | 1
Displacements and velocity from acceleration integration (accelerometer data)
The Simulink Onramp training course is a good place to start: https://www.mathworks.com/learn/tutorials/simulink-onramp.html?...
5 mois il y a | 0
GUI window to manually register two images?
You can try the registrationEstimator app included with the Image Processing Toolbox.
5 mois il y a | 0
how to run a simulation at different times
You can use the Signal Builder block to configure how you want a signal to change over time. I assume you are simulating the mo...
5 mois il y a | 0
Browsing the subsystem inside model using mscript
You can use open_system to open a Simulink model to some subsystem inside the model. The second parameter to open_system should...
5 mois il y a | 0
| A accepté
Load array into Simulink model from file without timestamps
If you define your matrix as a Simulink.Parameter in a data dictionary and link to that data dictionary from your model, that wo...
5 mois il y a | 0
How can I convert double to const real_T of a sfunction?
If x is a constant you cannot change it. You would need to supply a more complete example, it is hard to tell what you are tryi...
5 mois il y a | 0
Simulink code generation for tcpclient
Looks like code generation support for tcpclient was added in R2019B. You may just have a configuration issue in your R2020A te...
5 mois il y a | 0
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