# Negar

Active since 2013

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Question

Why do I receive this error while classifying by GMM? (gmdistribution.fit)
I am trying to classify the data set of handwritten digits (0-9) by Gaussian mixture models, with 2 mixtures. The training data ...

8 years ago | 0 answers | 0

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Question

how to export a matrix
hi all, i'm trying to export a matrix "f" that is double. My data in f are real numbers in three columns. I want a txt file as a...

9 years ago | 1 answer | 0

### 1

Question

How to divide a long vector into several vectors of known length
Dear all, Is there a way to divide a vector into several vectors of known length? lets say my vector is: IDX = [1 2 1 ...

9 years ago | 1 answer | 1

### 1

How to write such a loop?
I tried to make it for 2 data vectors, as follows: clear all close all clc % data d1 = [10 3 44 33 4 1...

9 years ago | 0

Question

How to write such a loop?
Hello everybody, I have two data vectors: d1 and d2, I have passed them through a segmentation algorithm, and the resulted class...

9 years ago | 2 answers | 0

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How to concatenate several matrices into one matrix?
Hello, sorry for answering so late, my problem is unfortunately more complex than what I had imagined. I'll try to post it again...

9 years ago | 0

Question

How to concatenate several matrices into one matrix?
Hello all, I have 3696 matrices with different number of rows but similar number of columns. Is there a way to concatenate t...

9 years ago | 3 answers | 0

### 3

Question

Error using | "Inputs must have the same size."
Hello everybody, I have made the attached kmeans clustering algorithm for un-predefined number of clusters. It is supposed to...

9 years ago | 1 answer | 0

### 1

Question

How to pass a cell to a function?
Hello, I have a cell array of size (1344X1). each cell element contains a matrix: first row: 22x40 double, second row 22X52...

9 years ago | 1 answer | 0

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Question

The correct way of importing data from a specific format
Hello all, In my project I have a set of files with a specific format (.acs). I saved the files as .txt format, (because I c...

9 years ago | 1 answer | 0

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Question

Dir command addresses one extra file
Hello all, I have a folder containing 9 .htk files. I need to use "dir", and then "readhtk" in a loop to import them to MAT...

9 years ago | 2 answers | 0

### 2

Question

How to plot multiple plots in a loop ?
Hello all, I want to plot 2 graphs in each loop so that they will appear in two separate figures, with consecutive number ord...

9 years ago | 1 answer | 0

### 1

Question

How to do it?
Hello all, Is there any tutorial to learn implementing a flow chart in MATLAB? By flow chart, I mean something like this: ...

9 years ago | 1 answer | 0

### 1

Question

"too many output arguments" when using kmeans
Hi all, Im trying to cluster a set of data points using kmeans. but each time I receive the many output arguments error.I eve...

9 years ago | 0 answers | 0

### 0

Question

A very basic question : How to dequantize this matrix?
Hello all, I have quantized matrix L by Quantization matrix Q : K = floor( L. / Q + 0.5 ) ...

10 years ago | 2 answers | 0

### 2

Question

A very basic question about nested for loops
Hello all, There are 2 persons, which each are pronouncing 9 vowels 10 times (I have in total 2*9*10 sound files). I've deriv...

10 years ago | 2 answers | 0

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Question

How to choose 2 people randomly among 12 ?
Hi all, Here is my question: I have a group of 12 peoples, Now I want to make a mini group by picking 2 of them by random. I...

10 years ago | 2 answers | 0

### 2

Question

How to make for loop ?
Hello everyone, I have a folder (database) containing some wav files , and I want to read each of them to extract some featur...

10 years ago | 2 answers | 0

### 2

Question

Zero padding or not?
Hello all, I want to estimate the spectrum of a part of a signal by using an 1024 point FFT. The length of the excerpt is 64...

10 years ago | 1 answer | 1

### 1

Question

taking FFT from a part of the signal
Hello all, I have a sound signal in time domain , How can I take the FFT of a excerpt of it, say a 40ms section from 0.026sec t...

10 years ago | 1 answer | 0

### 1

Question

Basic question again : How plot a finite length rectangular pulse
Im trying to plot this signal: x(n)=1 for n=2:4 . I tried by rectpuls : figure n=2:4; y=rectpuls(n); stem (y); But su...

10 years ago | 1 answer | 0