# Luccas S.

Last seen: 11 dagar ago Active since 2021

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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...

21 dagar ago | 1 answer | 1

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Question

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...

3 månader ago | 0 answers | 0

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answers

Question

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....

4 månader ago | 1 answer | 0

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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,...

4 månader ago | 1 answer | 0

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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?

nästan 2 år ago | 1 answer | 0

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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...

nästan 2 år ago | 2 answers | 0

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Question

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?

nästan 2 år ago | 2 answers | 0

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Question

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...

mer än 2 år ago | 2 answers | 0

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Question

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...

mer än 2 år ago | 1 answer | 0

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Question

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...

mer än 2 år ago | 1 answer | 0

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Question

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'...

mer än 2 år ago | 2 answers | 0

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Question

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==...

mer än 2 år ago | 1 answer | 0

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Question

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, ...

mer än 2 år ago | 1 answer | 0

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Question

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...

mer än 2 år ago | 2 answers | 0

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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...

mer än 2 år ago | 1 answer | 0

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Question

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...

mer än 2 år ago | 1 answer | 0

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Question

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 = [...

mer än 2 år ago | 0 answers | 0

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Question

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....

nästan 3 år ago | 1 answer | 0

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Question

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...

nästan 3 år ago | 1 answer | 0

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Question

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*...

nästan 3 år ago | 1 answer | 0

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Question

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?

nästan 3 år ago | 1 answer | 0

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Question

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...

ungefär 3 år ago | 1 answer | 0

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Question

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?

ungefär 3 år ago | 1 answer | 0

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Question

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...

ungefär 3 år ago | 1 answer | 0

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Question

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 = ...

ungefär 3 år ago | 1 answer | 0

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Question

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')

ungefär 3 år ago | 1 answer | 0

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Question

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') ...

ungefär 3 år ago | 1 answer | 0

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