# neamah al-naffakh

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Extract N number of digits after the dot

Hi guys, suppose *N=1234.4345* I would like to store in this variable the decimal number and the first two digits only af...

4 years ago | 1 answer | 0

### 1

answerQuestion

how to draw signal using different colour

Hi Guys Please I have plot the follwing graph. <</matlabcentral/answers/uploaded_files/89937/1.png>> The graph incl...

4 years ago | 1 answer | 0

### 1

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caculate frequency from signal data

I have data from the accelerometer sensor and this is an example of my signal <</matlabcentral/answers/uploaded_files/78681/...

4 years ago | 1 answer | 0

### 1

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how to get the content of cell array

I have an array called *(dataBig2)* that contains *20234 cells*. Each cell contains N number of *rows* and *9 columns* (the f...

4 years ago | 2 answers | 0

### 2

answersQuestion

dividing signal into subsets

I have about 5 hours of the acceleration data for a particular user ( the collected data is real life data, which means I don't ...

4 years ago | 2 answers | 0

### 2

answersQuestion

How to determine input and target data for classification in neural network

Hi, I'm working on *gait recognition problem*, the aim of this study is to be used for user authentication (i.e. authenticate...

5 years ago | 1 answer | 0

### 1

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Training Neural Network for classification

Hi, I'm working on *gait recognition problem*, the aim of this study is to be used for user authentication I have data of ...

5 years ago | 0 answers | 0

### 0

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K-Fold Cross Validation

Hi Guys, I have data of 36 users as shown in the code (MATLAB) data is loaded into a matrix called *Feat_Vec1* clear...

5 years ago | 0 answers | 0

### 0

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sorting a matrix column with the corresponding row

I have a matrix that contains ( 6 rows, 2 columns) as shown in the attached image. <</matlabcentral/answers/uploaded_files/6...

5 years ago | 1 answer | 0

### 1

answerQuestion

Delete Data from a Cell Array

Hi, I have an array called AA that contains *36 cells* ( inside each cell there is another *36 matrix* each matrix contains...

5 years ago | 1 answer | 0

### 1

answerconvertion N matrixs inside a cell into one array

in addition to the answer of the gentleman *Walter Roberson* this is another answer that we can use it as well output...

5 years ago | 0

Question

convertion N matrixs inside a cell into one array

I have a cell called *( AA )* that contains *1 row * 36 columns* (as shown in the attached image) <</matlabcentral/answers/...

5 years ago | 2 answers | 0

### 2

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convert column inside a cell

Hi everyone, I have a cell *(called AA )* that contains *1 row * 36 columns* (as shown in the attached image) <</matlab...

5 years ago | 2 answers | 0

### 2

answersQuestion

load multiple .mat files

hi everyone, I have a question. I am analysing some data which have multiple subjects. Information about every subject is ...

5 years ago | 1 answer | 0

### 1

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Split a vector into two vectors randomly

hi, I have a vector that has 36 values and I'd like to split it into two vectors randomly. ( the first vector has 25 values ...

5 years ago | 1 answer | 0

### 1

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convert the time domain signal into frequency domain signal

hi guys, this is the second part of this <http://uk.mathworks.com/matlabcentral/answers/300090-convert-the-time-domain-signal-...

5 years ago | 1 answer | 0

### 1

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convert the time domain signal into frequency domain signal

Hi, I have represented the acceleration data of 3 axes(x, y, and z) in time domain as shown in the Graph <</matlabcentral/...

5 years ago | 3 answers | 0

### 3

answersQuestion

Convert Time Domain Signal Data into Frequency Domain

Hi, I have dataset that contains time stamp and the acceleration data of three axes( x, y, and z) then i the data has been sto...

5 years ago | 1 answer | 0

### 1

answerhow do i calculate the Correlation coefficients

Hi guys, thanks for your answer howeover, the correct function is *corr* CorrcoeffXY{nn,1} = corr(X_Segments{nn},Y_Se...

5 years ago | 0

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how do i calculate the Correlation coefficients

I have dataset that contains the acceleration data of three axes (x, y, and z) , this an example of my data X ...

5 years ago | 2 answers | 0

### 2

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calculating the MFCC and BFCC for a signal

Hi guys, I'm wondering, is there any function in Matlab to extract the Mel Frequency Cepstral Coefficients (MFCC) and Bark Fre...

5 years ago | 1 answer | 0

### 1

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Finding local minima for a signal

I have used the (findpeaks) function in Matlab in order to find the locations and the value of the peaks ( Local Maxima ) in the...

5 years ago | 4 answers | 0