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Massilon Toniolo da Silva


Last seen: 4 years ago |  Active since 2017

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How to define the input parameter type for a given function?
I have the following problem: "Undefined function 'anyfunction' for input arguments of the type 'double'. How can I allow the in...

4 years ago | 0 answers | 0

0

answers

Question


How to calculate and represent the mean values of many distincts time series?
Hi everybody, I am struggling to find the mean values of say 30 distinct time series representing the same phenomena. Is there...

7 years ago | 1 answer | 0

1

answer

Question


How to get rid of the complex part from the result of the inverse Fourier transform of a real-valued signal?
After applying the inverse Fourier transform to real-valued signal I have got , as expected, complex numbers. But, I would like...

7 years ago | 2 answers | 0

2

answers

Question


Generation of 1/f noise using Matlab.
Dear Colleagues, I have been trying to generate the 1/f noise, where f means frequency. I would appreciate any help and guidan...

7 years ago | 3 answers | 0

3

answers

Question


Where to find the file generated by ann2rr() ?
Hi everyone, After using: >> [rr,tm] = ann2rr('my_data', 'qrs'); The Workspace showed a variable rr with value Nx1 double....

7 years ago | 1 answer | 0

1

answer

Question


Incorrect use of the function zeros().
I have tried the following piece of script and got problems related to the use of zeros(): X = X(:); N = length(X); ...

7 years ago | 1 answer | 0

1

answer

Question


Can Matlab be employed to carry out the Multiscale Entropy (MSE) method?
I would like to get plots of SampEn vs Scale factor using Matlab. Is it possible using Matlab? Many thanks. Kind regards, Ma...

7 years ago | 0 answers | 0

0

answers

Question


Where does ann2rr() store its result?
Hi everyone, After using: >> [rr,tm] = ann2rr('my_data', 'qrs'); The Workspace showed a variable rr with value Nx1 double. ...

7 years ago | 0 answers | 0

0

answers

Question


Can Matlab be used to get rid of noise and artefacts from RR intervals time series?
Dear colleagues, Can Matlab be used to eliminate noise and artefacts from RR intervals series? If yes, could you please pro...

7 years ago | 0 answers | 0

0

answers

Question


How to use Matlab to remove noise and artefacts from RR time series?
Dear colleagues, I have no previous experience with time series and would like to remove noise and artefacts from RR series. ...

7 years ago | 0 answers | 0

0

answers

Question


How to truncate a time series to 20.000 points?
Dear colleagues, I am using ann2rr() to generate RR time series from beat annotation files from Physionet.org. I would like ...

7 years ago | 1 answer | 0

1

answer

Answered
Use of fopen,fscanf and fclose.
Dear Stephen Cobeldick, I am sorry for the delay. Now I am sending the files annotations_nsr001 and annotations_chf201.txt b...

7 years ago | 0

Question


Use of fopen,fscanf and fclose.
Dear colleagues, I have been trying to select rows and columns of a data set in text file. The data I have got is displayed ...

7 years ago | 2 answers | 0

2

answers

Question


Use of a specific field of a structure.
I want to operate on one of the fields of a struct x in order to calculate standard deviation of it I read that one way to imp...

7 years ago | 1 answer | 0

1

answer

Question


How to convert a RR interval file into text format.
Dear Colleagues, I want to use some RR interval files freely available at Physionet.org. In order to use it in my script whi...

7 years ago | 1 answer | 0

1

answer

Question


Selection of rows and columns of a data set.
Hi everybody, I have a file in text format (from Physionet.org) having six columns and some hundreds rows. I need all rows but...

7 years ago | 1 answer | 0

1

answer

Question


Undefined operator '+' for input arguments of type 'struct'.
Hi, I have been trying to run a script and got the error: Undefined operator '+' for input arguments of type 'struct'.   ...

7 years ago | 0 answers | 0

0

answers

Question


Hi, I have been trying to run a script and got the error: Undefined operator '+' for input arguments of type 'struct'.   Error in coarsegrain (line 41)   sum = sum + y(scale*i + j);   Error in mse (line 35)   scaled = coarsegrain(method,y,scale);.
Hi, I have been trying to run a script and got the error: Undefined operator '+' for input arguments of type 'struct'.   ...

7 years ago | 1 answer | 0

1

answer

Question


Undefined function 'sum' for input arguments of type 'struct' and Error in std.
Problem 1: Undefined function 'sum' for input arguments of type 'struct': Error in var: xbar = sum(x, dim) ./ n; ...

7 years ago | 1 answer | 0

1

answer

Question


Standard deviation calculation of a time series.
I wrote the following script to plot the Multiscale Entropy of a time series My_Signal in Matlab format: >> load 'My_Si...

7 years ago | 1 answer | 0

1

answer

Question


What does x=val(1,:)?
I should use a Nx1 vector of doubles as my input signal x for my function. What do I get if a use: >>load (´My_Signal.m`) and ...

7 years ago | 1 answer | 0

1

answer