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Benjamin Thompson


Last seen: Today Active since 2015

Programming Languages:
C++, C, MATLAB
Spoken Languages:
English

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  • 6 Month Streak
  • Revival Level 2
  • Knowledgeable Level 4
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Answered
looping in all audio files
dir('*.wav') will return a struct containing all the audio file names. Then you can pass the name field of each element of that...

2 days ago | 0

Answered
Is it possible to inline Code Gen of top level Simulink model containing model references?
For generating C or C++ code using Embedded Coder, if you right click on the subsystem block, go to Block Parameters, and go to ...

2 days ago | 0

Answered
alignment of images - is there no function to align control points?
Your control points do not match up, and the last control point actually does not appear in the distorted image.

2 days ago | 0

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Answered
Wind gust modeling on Simulink...
The Aerospace Blockset has a variety of blocks for wind modeling, and discrete wind gusts per the MIL-F-8785C specification is o...

2 days ago | 0

Answered
How do I extract fixed-width columns from a file that includes empty spaces?
Use the import data tool and configure the delimiter options to use space and treat multiple delimiters as one. You can generat...

2 days ago | 0

Answered
Convert Video to lower quality file
You use VideoWriter to write out to an output video, like in this example: https://www.mathworks.com/help/matlab/import_export/...

3 days ago | 0

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Simulink bus object modification from Matlab script
This article explains some ways of modifying the model workspace. If you have more specific questions please ask them and post ...

3 days ago | 0

Answered
How do i read a line after a word in a csv file
This could be a good example of using splitapply after reading in the entire dataset as a table. See this article: https://w...

3 days ago | 0

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Answered
Number of peaks in the interval
Use MinPeakHeight as the parameter name for findpeaks. You do not show the definition of locsI or psk in your sample code.

3 days ago | 0

Answered
Code generator does not create appropriate .h files for Simulink model
Could the output or example folder be read only?

3 days ago | 0

Answered
How to calculate the total length of all the lines in this image (with grid)?
You can use colorThresholder to help isolate the red pixels and then simply count all of them in the resulting mask image using ...

3 days ago | 0

Answered
Live webcam with histogram ?
Have you tried this example for acquiring an image: https://www.mathworks.com/help/supportpkg/usbwebcams/ug/acquiring-a-singl...

3 days ago | 0

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Answered
Fourier series fit to a periodic function with multiple frequencies
Try looking over the documentation of the fft in MATLAB, along with the examples included there. If you have more specific ques...

6 days ago | 0

Answered
Video Writer for cycle detection
You can use frame2im(getframe(gcf)) to get an image that has the result of imshow and viscircles together.

6 days ago | 0

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Answered
Parallel for loop problem
You may want to review this thread and use parfeval if the partial results option is something you want. https://www.mathwork...

6 days ago | 0

Answered
Risk Matrix in MATlab
This is getting pretty close: %Define risk matrix 1-3 (1 low - 2 medium - 3 severe) C=[2 3 3 3 3 3; 2 2 3 3 3 3; 1...

6 days ago | 1

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Answered
MATLAB Coder does not recognize dot notation in struct member assignment
See the article "Name the C Structure Type to Use With a Global Structure Variable" in the MATLAB help documentation. You need ...

7 days ago | 0

Answered
Implicit casting overhead from real to complex when multiplying two matrices
Multiplying a complex matrix by a real matrix requires fewer calculations so should take less time. Your test is a little too s...

7 days ago | 0

Answered
How to change the max pixel value of the image
This is to increase the values of specific values in a matrix. You can probably take it from there: >> >> A = [35 40 45 55...

7 days ago | 0

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FFT of a Superposition signal
Try this, and see this article on usage of the FFT to understand how to interpret the results and assign results to frequencies....

7 days ago | 0

Answered
enhance image quality for read Barcode
If your camera has autofocus, the reflection off the table below may be confusing it. Place something nonreflective with no hig...

14 days ago | 0

Answered
enhance image quality for read Barcode
Can you get a better photo? Can you read the barcode manually from this photo? You can use improfile to get something like thi...

17 days ago | 0

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Answered
How can I convert a file format FIG to PCD?
There is a function called pcwrite. The MATLAB documentation has a good article on it.

17 days ago | 0

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Finding an element in table without using if_else condition
You can do some operations on the Table variables to get index vectors: >> Table_A.A ans = 3×1 string array "...

17 days ago | 1

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Answered
How to call c2000 library functions with the S-Function builder?
If you are using mex to compile this C code into a binary for Simulink to use as an S-Function block, you probably need to use t...

20 days ago | 0

Answered
Customized Library version management
Simulink libraries just have one version number for the whole thing just like Simulink model files. You can not version each bl...

1 month ago | 1

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Answered
[SOLVED ALREADY] Loop through data struct with variable names
You want to index into the structure array, then pass one of those array elements to the length function: >> S1.E1 = [1 1]; ...

1 month ago | 0

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Using Matlab to open a text file
Looks like subl is not in your search path. You can use the system command to print out the search path that the MATLAB process...

1 month ago | 0

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Answered
Embedded coder 'Generate code only' not including toolbox files
If you have some other toolchain to compile the source code, you can locate the file in the MATLAB program files folder and incl...

1 month ago | 0

Answered
Getting NaN while using the ratio of power and factorial
The factorial function output increases very fast as input increases. See "doc factorial" for details. The output is "inf" for...

1 month ago | 0

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