Pregunta

Macros in Matlab - repeating simple instructions
Hi there, I have read on some websites that writing macros for Matlab is not advisable? I am trying to write several as I am ...

más de 11 años hace | 3 respuestas | 0

3

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Problem with dimensions, filling a matrix in a for loop
sorry guys that is an old code where I had changed variables names the actual code is as follows; clc clear all; ...

más de 11 años hace | 0

Pregunta

Problem with dimensions, filling a matrix in a for loop
I am trying to work out the root mean square of my data in sections of 2 seconds. However, the dimensions the matrix Az1 etc is ...

más de 11 años hace | 2 respuestas | 0

2

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Pregunta

Time aligning data - an unusual situation
Hi there I have a rather difficult problem. I am trying to align data from different sensors placed on different parts of a p...

casi 12 años hace | 0 respuestas | 0

0

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Pregunta

Trying to get rid of a dc offset - tried other methods posted but to no avail
I am applying the FFT function to data from an accelerometer and I have a large spike at 0Hz. I understand that this could be ...

casi 12 años hace | 0 respuestas | 0

0

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Pregunta

Peak finder - finding major peaks instead of just the smaller ones
I want to use a peak finder to find the major peaks in my spectrum, however, when I use {pks, locs] = peakfinder() I get all ...

casi 12 años hace | 2 respuestas | 0

2

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Pregunta

Low pass Filter - designing one
Hi there I am currently trying to perform FFT on an acceleration signal. I have values in terms of g values, ie 0.95g etc. I ...

casi 12 años hace | 1 respuesta | 0

1

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Pregunta

Problems using trapz() - dimension issue
clc clear all; Az=load('TEXT PILOT CC LANKLE_converted_1.txt'); Az1=Az(:,1);%looking at the velocity in x first A ...

casi 12 años hace | 1 respuesta | 0

1

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Pregunta

velocity from accelerometer using numerical intergration
I have a problem I have a trace from an accelerometer and I want to convert this into velocity I do not major in physics and I w...

casi 12 años hace | 1 respuesta | 0

1

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Appropriate window from accelerometer data
Also can I also say that my code so far is as follows; x1 = data (from section1 a period of walking and jumping) y1 = x1...

casi 12 años hace | 0

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Appropriate window from accelerometer data
Also would perhaps a low pass filter work?

casi 12 años hace | 0

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Appropriate window from accelerometer data
Also its important for me to add that all my plots from the various sections of data look the same with just large spikes at the...

casi 12 años hace | 0

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Appropriate window from accelerometer data
Hi there I was wondering if you could have a look at the graph I have made from one of the sections from my data. The large spik...

casi 12 años hace | 0

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Appropriate window from accelerometer data
Hi there thanks so much for the suggestion, When I apply this method though I get the error message saying that the dimensions m...

casi 12 años hace | 0

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Appropriate window from accelerometer data
Hi there, I have been thinking about my problem in more depth and have realised that I may need to preprocess my data. Basica...

casi 12 años hace | 0

Pregunta

Appropriate window from accelerometer data
I am attempting to put my data through the fat function however, it seems that due to high spikes at the ends I may need to use ...

casi 12 años hace | 8 respuestas | 0

8

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Pregunta

'load' command - loading and using data from a .MAT file
Hi there I would like to load data from a .mat file but retain it's structure. It is a 17x17x17 matrix and at the moment I am si...

alrededor de 12 años hace | 1 respuesta | 0

1

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Pregunta

Spherical harmonics - finding the coefficents of values of ODFs
Hi there, I am very new to the study of spherical harmonics and I was wondering if you could help me. I have values of my ODF...

más de 12 años hace | 0 respuestas | 0

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working out the vertices of polyhedra
I am trying to work out the vertices of various sized polyhedra. I want equally spaced points on a sphere of radius one (ie goin...

más de 12 años hace | 0 respuestas | 0

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eigenvalues - determining the three major eigenvalues from a matrix
Well I actually would like to work out the principal Eigen vector for a ODF which is in the form of a vector but I'm not really ...

más de 12 años hace | 0

Pregunta

eigenvalues - determining the three major eigenvalues from a matrix
Is there a code or program I can download which will determine the three main eigenvalues,; t1 t2 and t3 of a matrix as I really...

más de 12 años hace | 3 respuestas | 0

3

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Pregunta

More sophisticated code than a for loop with i is large
Hi there I am trying to calculate a scatter matrix for some data. so basically my Eigen values are in a matrix of the form; [e11...

más de 12 años hace | 2 respuestas | 0

2

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Pregunta

while statements - imposing two conditions
Hi there I am trying to impose a while loop with two conditions; while (L2normpercentold>=tol)&&(any(Diffpart1>0.0001)) Howe...

más de 12 años hace | 2 respuestas | 0

2

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output history and testing convergence
Hi there, I have quite a complicated algorithm running and I would like to test to see if it converges as it is taking a very...

más de 12 años hace | 1 respuesta | 0

1

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Problem with ifftn and ifftshift??
Thanks so much for the help! I will try your suggestion! :D

más de 12 años hace | 0

Pregunta

finding places where an array are equal to zero and replacing them accordingly
I have written some code, however, due to the fact that my alogirthm is really quite complicated it is hard for me to see if my ...

más de 12 años hace | 1 respuesta | 0

1

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Pregunta

Problem with ifftn and ifftshift??
Hi there I was wondering if someone could help me. I am using the fftn fftshift functions as part of my alogrithm; tmp = fftn...

más de 12 años hace | 2 respuestas | 1

2

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Pregunta

Indexing problem - how to obtain row and column and use later
If I have a matrix A = [ 1 2 3; 2 3 4; 2 0 8; 4 8 0; 1 2 0; 0 0 0] and I wanted to store the places where the zeros exist and t...

más de 12 años hace | 1 respuesta | 0

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Comparing data from previous iteration with data from this iteration
Hi there, yes I see the problem with what I was trying to do. I have only used while loops in the context of single value sol...

más de 12 años hace | 0

Pregunta

Comparing data from previous iteration with data from this iteration
I want to terminate my loop when the difference between two iteration has an L2 norm of less than 0.1% I thought this was done i...

más de 12 años hace | 2 respuestas | 0

2

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