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Question
Use XSteam with vectors
Hello, I have to modify some pressure values with XSteam but I realized this code use only scalars. Example: XSteam(‘rho_pT’,1,...
plus de 3 ans il y a | 1 réponse | 0
1
réponseQuestion
How can I falsely increase the frequency of acquisition of a signal?
Hello, I have to confront a 50 Hz (20 ms of period) pressure signal with a 5 Hz temperature signal (200 ms of period) to calcu...
plus de 3 ans il y a | 1 réponse | 0
1
réponseQuestion
High-pass filter
Hello, I'm working on acceleration signals coming from an accelerometer that has a sensitivity change of 0% from 2 Hz to 10000 ...
plus de 4 ans il y a | 1 réponse | 0
1
réponseQuestion
Maximum value and its position
Hello, I have an accelerometric signal and I would like to find the maximum value of the column of the acceleration values and...
plus de 4 ans il y a | 1 réponse | 0
1
réponseQuestion
Extract a portion of an accelerometric signal around a maximum
Hello to everyone, I have an accelerometric signal (1st column : time ; 2nd column : acceleration values); I would like to fin...
plus de 5 ans il y a | 1 réponse | 0
0
réponseQuestion
y-axis' unit of measure of a FFT and of a PSD
Hello everyone, I performed a FFT and a PSD of a accelerometric signal (g is the unit of measure). The code is the following: ...
plus de 5 ans il y a | 1 réponse | 0
1
réponseImporting big .ASC file
Dear Walter, I downloaded the 2020a version and it works! I have a question: now I have a n x 1 table (one column of the T table...
plus de 5 ans il y a | 0
Question
Importing big .ASC file
Good morning, I searched on the web but I din't find anything useful for me. I have a big .ASC file that begins like this: Ti...
plus de 5 ans il y a | 2 réponses | 0
2
réponsesQuestion
Write a simple txt files made by strings and numbers
Good evening, I would like to write a simple .txt file with data I already have in my workspace. In particular I would like to ...
environ 6 ans il y a | 1 réponse | 0
1
réponseQuestion
Change frequency axis on a scalogram
Goodmorning everyone, I plotted a scalogram of my signal (xa) in this way: cwt(detrend(xa),600); title('CWT of the accel...
plus de 7 ans il y a | 1 réponse | 0
0
réponseQuestion
Band-pass Butterworth filter
Hello, I'm trying to make a band-pass Butterworth filter in order to filter a signal. With the help of Star Strider I already ma...
presque 9 ans il y a | 1 réponse | 0
1
réponseQuestion
High-pass Butterworth filter and filtfilt
Hello everyone, I'm trying to high-filter a signal beacause when I perform a fft of the original signal I find a contribution at...
presque 9 ans il y a | 1 réponse | 0
1
réponseQuestion
How can I deduce velocity and displacement trends from an acceleration signals
Hello everyone, I have an acceleration signal from an accelerometer. I wrote a simple script in order to analyse this signal: I ...
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
Routine that recall various files and apply a script
Hello everyone, I have a question. I wrote a simple script that analyse a xlsx file. I have many of these files in a single dire...
environ 9 ans il y a | 2 réponses | 0
2
réponsesQuestion
Fft code; differences between scripts.
Goodmorning everyone, I want to perform a fft of an accelerometric signal and I'd like to know what's the best way to do that. W...
environ 9 ans il y a | 1 réponse | 0
0
réponseQuestion
Butterworth lowpass filter design code
Hello everyone, I wrote a simple code to analyze an accelerometric signal in the frequency domain and I saw that the magnitudes ...
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
"Warning: Integer operands are required for colon operator when used as index" in fft
Hello everyone, I tried to write a script in order to perform a fft of an accelerometric signal. When I run the code the warning...
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
How may I perform an accelerometric signal analysis with MATLAB?
Goodmorning everyone, I was asked by the head of the research group to perform an analysis of an accelerometric signal and I wa...
environ 9 ans il y a | 1 réponse | 1
0
réponseQuestion
Subtract the average time value by a signal
Hello everyone, I performed a FFT of an accelerometric signal and I found a peak at 0 Hz in the abs of the FFT. In order to remo...
plus de 9 ans il y a | 1 réponse | 0
