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Matlab Collected Knowledge
MATLAB Curve Fitter App (Curve Fitting Toobox 3.9)
1. Curve fitting tool speed up centering and scaling to fit the data when doing regression analysis.
Why do you need regression analysis?
2. I need regression analysis to derive the best fit equation. Then I will use the derive equation to make prediction or estimation of asset remaining useful life.
Input data also known as predictor data usually is variable "x", and the predicted output is variable "y". For example x-variable can be time series input data. Then y-variable predicted output can be a voltage.
Searching Matlab documentation for linspace function
clc - clear window display
clear - clear window display and memory
Matlab Prompt and Workspace
Entering Command and Naming Variable
Saving and Loading File
Matlab built-in functions
Matlab Live Editor
Vector and Matrix
How to write a row vector array?
How to write a column vector array?
How to write a matrix array?
When creating a matrix you must enter them row by row. The semicolon is your clue that you are now entering the next row in your listing.
Another way to create a row vector array is by using colon. You specify the starting number : ending number. Here you must remember that the default step is 1. So the next number will be stepped up by adding 1 to the starting number.
You are allowed to do computation within the square brackets
linspace function will generate equally space interval while the logspace function will generate logarithmically spaced interval
Array Creation
Data Extraction in Matlab
MASTERING FAST FOURIER TRANSFORM USING MATLAB FOR
INVERTER BASED RESOURCES DATA ANALYSIS
Looking at the Noisy signal waveform shown above it is very hard to see what is the dominant frequency present. The noisy waveform could be a current waveform or voltage waveform. Now using Matlab fast Fourier transform function we can easily see the 60 Hz and 180 Hz (3rd Harmonics) are present. Then using the Matlab power frequency spectrum function, we can easily see the dominant frequency captured at the that moment of time.
Sample ChatGPT writing Matlab code
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