# Luccas S.

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Question

Out of memory error

I'm trying to run the code below, it works well and does its job. The problem is that it is not capable of running all iteration...

3 months ago | 1 answer | 0

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answerQuestion

How to add a sum of frequency band or a specific frequency to the wsst function

I would like to sum up the values found in the intervals or a specific frequency range, as shown in the image below: The gr...

5 months ago | 1 answer | 1

### 1

answerQuestion

Correlation Matrix Problem of Three Decomposition Level of DWT

I'm trying to apply a DWT with 3 composition levels and the following question arose when calculating the composition matrix. Th...

7 months ago | 0 answers | 0

### 0

answersQuestion

Error using vertcat Dimensions of arrays being concatenated are not consistent..

The code below is showing the following error Error using vertcat Dimensions of arrays being concatenated are not consistent....

8 months ago | 1 answer | 0

### 1

answerQuestion

How to place a subplot with the same dimensions as ax.width, ax.height and ax.Position

I am plotting a graph and I would like the start of the subplot(3,1,1) to coincide with the start of the subplot (3,1,2) and (3,...

8 months ago | 1 answer | 0

### 1

answerQuestion

Remove white/blank space from plot

Is there any way to remove the areas or reduce the blank parts of the plot as much as possible?

2 years ago | 1 answer | 0

### 1

answerQuestion

Store one vector range inside another

How to store the values of vector x, say from x(50,1) to x(100,1)? I tried in the following way, but it didn't work. RES_B...

2 years ago | 2 answers | 0

### 2

answersQuestion

How to check if there are more ones than zeros in the variable.

For example, if there is the variable x; x = [1 1 1 1 1 1 1 1 0 0 0]; How to check if it has ones than zeros?

2 years ago | 2 answers | 0

### 2

answersQuestion

Is it possible to apply imdilate and imerode to a signal and not an image?

The question is exactly the topic name. I want to apply morphological gradient to a current signal, so I would like to know if i...

2 years ago | 2 answers | 0

### 2

answersQuestion

Define origin and length of the Strel function

I'm trying to create the following structuring element (SE): The underline bar represents the origin of the SE. For example...

2 years ago | 1 answer | 0

### 1

answerQuestion

Add Gaussian Noise to a Signal

I'm trying to add a 65 db Gaussian noise to a current signal. With the following function: Ia = awgn(Ia,65) The problem is tha...

2 years ago | 1 answer | 0

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answerQuestion

Exclude the NaN, 0, empty and Inf values from the analysis.

When calculating the PE value, I would like it not to calculate when Ia_future = 0, Nan or Inf. I believe the way I did it, it'...

2 years ago | 2 answers | 0

### 2

answersQuestion

elseif when the flag is not true

I have this part of my code, and I was wondering if this way of implementation is right. flag=flag & PE(n,1)>p_fix if count1==...

3 years ago | 1 answer | 0

### 1

answerQuestion

Check if the condition happened in previous cycles

I'm trying to make a condition to analyze every 5 cycles, but I need the value of p_fix (threshold) not to exceed PE. As I did, ...

3 years ago | 1 answer | 0

### 1

answerQuestion

Skip analysis when you have NaN or 0

I think I am having problems with my analysis result due to the presence of NaN and 0. How to skip analysis when I have NaN or 0...

3 years ago | 2 answers | 0

### 2

answersQuestion

Cycle counter with reset

I apologize for not having developed any code for this part, because I have no idea how to do it. So, I'm going to work with the...

3 years ago | 1 answer | 0

### 1

answerQuestion

How to get the highest value from the latest samples?

I have code that calculates an error for each sample, and I would like to always get the highest value from the last samples. e...

3 years ago | 1 answer | 0

### 1

answerQuestion

Error using / Matrix dimensions must agree and Forward Linear Prediction

I'm trying to predict the future values of my data sample with the following code: for n = 1:size(t,1) if n>=3 X = [...

3 years ago | 0 answers | 0

### 0

answersQuestion

Plot for different values

Hi, I'm trying to vary the value of Q but the values aren't changing. HfTOTAL = 26.8708 Hg = 30 Q = 0:50:450; K = HfTOTAL....

3 years ago | 1 answer | 0

### 1

answerQuestion

Multiplying matrices with values in polar form

Hello, I'm trying to perform the following operation (Image). I did the operation in complex form in matlab and it worked, but I...

3 years ago | 1 answer | 0

### 1

answerQuestion

Write a complex number in polar form

Hello,I would like to know how do I write a complex number in its polar form. Like the image below. Mycode: Soperacao = (0.8*...

3 years ago | 1 answer | 0

### 1

answerQuestion

rounding the imaginary part of the number

Z1 = 0.0000e+00 + 7.8765e-04i I would like the result to appear as 0.0008i in the imaginary part, how to do this?

3 years ago | 1 answer | 0

### 1

answerQuestion

Solve an equation like the HP calculator solve

I would like to know if there is any way to solve an equation like HP's solve, I wanted to find out the value of To2 without hav...

3 years ago | 1 answer | 0

### 1

answerQuestion

I wanted the matlab to show 5 places after the comma.

I know this is possible with 'format long'. But I wanted to specifically limit it to 5, is there any way to do that?

3 years ago | 1 answer | 0

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answerQuestion

Problem with radians and degrees

I am implementing this code. And the result does not match at all. The result must be in radians and the result must be the fo...

3 years ago | 1 answer | 0

### 1

answerQuestion

I need to plot the same graphic of the image, but without any loop.

With loop i get this: clear clc x = -5*pi:pi/100:5*pi; k = 0; y = zeros(size(x)); for k = ...

3 years ago | 1 answer | 0

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answerQuestion

How to save a txt file in matlab with the specified name I want?

Example: filename = input('Enter the file name: ','s') A save(fullfile('directory path','filename.txt'),'A','-ascii')

3 years ago | 1 answer | 0

### 1

answerQuestion

How to enter negative values and values greater than 9 in input with string.

clear clc n=10; ii=1; V=0; display('number between 10 and 20!') while ii<10 teste = input('Enter a value: ','s') ...

3 years ago | 1 answer | 0