Question

How to solve a differential equation with two unknown variables
Hello Matlab community, I would like to solve the following differential equation of u(y,t): I've written so far: function...

mer än 3 år ago | 1 answer | 0

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Question

I have 4 bits combinations, and I want to change the size of the matrix HT depending on these combinations, the description below
First ___ I creat the combinations like the follow: n=4; %number of bits r = [ 0:2^n-1 ]; A = []; for i = 1 : n A = [A;r]...

mer än 3 år ago | 1 answer | 0

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Question

from C_T_Sep_1 to C_T_Sep_10 they are vectors the same thing for C_A_Sep_1... C_A_Sep_10, I want to create matrix C_T_Sep and C_A_Sep and put the vector inside it, using loop
C_T_Sep_1 = importdata('C_T_Sep_1.txt') ; C_A_Sep_1 = importdata('C_A_Sep_1.txt') ; C_T_Sep_2 = importdata('C_T_Sep_2.txt') ;...

mer än 3 år ago | 1 answer | 0

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Question

How to save the values of (x,C) in file 1 and (x,y) in file 2 to plot them in file 3.. the description in the code below
% file 1 clc; clear; x=[1 3 2 5 8] for i=1:10 C=i*(x); end %%%%%%%%%%%%%%%%%%%%%%%%%%% % file 2 clc; clear; y=[...

mer än 3 år ago | 1 answer | 0

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Question

how I can insert these specific colours into my figures
newcolors = [0 0.4470 0.7410 0.8500 0.3250 0.0980 0.9290 0.6940 0.1250 0.25 0.80 0.54 ...

mer än 3 år ago | 1 answer | 0

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Question

the colors red, blue, yellow repeated again in my plot, how I can give each curve in the plot different color
clc; clear; K=1:30; for i=1:10 C_T=i*log(K); plot_T = plot(K,C_T,'-O','LineWidth',2); hold on grid on title('Total C...

mer än 3 år ago | 1 answer | 0

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Question

I have P=[2 3 4 0 5 1 0 2 ]; and I want to create a loop to remove zeros from P and calculate C, description in the code
%% , for example P=[2 0 4 0 5 1 2 0 ]; and after the first iteration P=[2 4 0 5 1 2 0]; and second iteration P=[2 0 4 5 1 2 ...

mer än 3 år ago | 1 answer | 0

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Question

the (if statement) condition happens only ones but I want to repeat this if (F Zero) is still not empty
if (~isempty(F_Zero)) %There is Zeros (not empty) W(:,F_Zero) = []; % Remove the columns of W HT(F_Zero,:...

mer än 3 år ago | 1 answer | 0

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Question

if you run F Zero you will get [2 5], I want to delete the column number 2 and 5 from the Matrix W, but the problem is when I'm deleting the columns it deletes number 2 and 6
clc; clear; W=rand(6) Pt=10; Pn=[2 7 3 2 8 4]; P = waterfill(Pt,Pn); F_Zero=find(~P) %Find Zeros %% delete the col...

mer än 3 år ago | 1 answer | 0

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Question

How I can separate my code and let it run in parallel, because for loop is making the code execution very slowly
clc; clear; M=60; N=(linspace(6,10,5)).^2; %Number of Elements IRS K=linspace(4,10,7); %Number of Single Antennas UE L = ...

mer än 3 år ago | 1 answer | 0

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Question

I want to change the for loop to speed up my code
clc; clear; M=60; N=(linspace(6,10,5)).^2; %Number of Elements IRS K=linspace(4,10,7); %Number of Single Antennas UE L = ...

mer än 3 år ago | 1 answer | 0

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Question

I specified more parameters to GA in order to speed up my code execution by using (optimoptions), I want to know the best values for these parameters and the meaning of it
opts = optimoptions(@ga, ... 'PopulationSize', 150, ... 'MaxGenerations', 200, ... ...

mer än 3 år ago | 1 answer | 0

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Question

difference between Optimization terminated: maximum number of generations exceeded and Optimization terminated: average change in the fitness value less than .
1- Optimization terminated: average change in the fitness value less than options.FunctionTolerance. 2- Optimization terminated...

mer än 3 år ago | 1 answer | 0

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Question

How I can specify more parameters to GA in order to speed up my code execution. with the help of (optimoptions function of ga).. opts = optimoptions(@ga,
%% Genetic Algorithm FT=@(x)-Genetic_A(x); A = []; % No other constraints b = []; Aeq = []; beq = []; lb = zeros(1,n); ub...

mer än 3 år ago | 1 answer | 0

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Question

I want to save my figure in another path. Every time I used the command save figure it saved in Desktop how I can change it
clc; clear; N = [10 20 30 40 50]; M = [1 2 3 4 5]; K=[1 3 5 6 7]; x = linspace(0, 1, 17); legendString = "N = " + string(N...

mer än 3 år ago | 1 answer | 0

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Question

I want to see N,M first and then K,M in the same legend. I can see only N,M like the attached picture.
clc; clear; N = [10 20 30 40 50]; M = [1 2 3 4 5]; K=[1 3 5 6 7]; x = linspace(0, 1, 17); legendString = "N = " + stri...

mer än 3 år ago | 1 answer | 0

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Question

I want my legend just like the pic. 2 variables in 2 columns at the same legend
clc; clear; N = [10 20 30 40 50]; M = [1 2 3 4 5]; x = linspace(0, 1, 17); plot(x, N.*x.') legendString = "N = " + strin...

mer än 3 år ago | 1 answer | 0

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Question

Three phase sinus wave plotting with degrees
Hello, I would like to plot three phase sinus wave with time perriod converted to degrees. I need to get all phases into 0-360 i...

nästan 4 år ago | 1 answer | 0

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Question

Three phase sinus wave plotting
Hello, I woul like to ask how can edit my sinus wave time period, cause now i nor able to plot proper sinus wavew by method whi...

nästan 4 år ago | 1 answer | 0

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Question

The Average of the Matrix G with the dimension (M,n) that I'm repeating 3 times in a loop so I'll have 3 matrices of G (M,n) and I want to take the Average of these 3 matrices so I can get only one matrix of G(M,n) represent the Average of them)
clc; clear; M=5; n=3; freq = 28e9; lambda = physconst('LightSpeed')/freq; d_BS=lambda/2; %Inter-antenna separation atthe BS. d_...

nästan 4 år ago | 2 answers | 0

2

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Question

High Resolution fft2 image
Hello All, Please help me on the following- I need to construct an Fourier Transormed image such an Fig.1, But so far I have go...

nästan 4 år ago | 1 answer | 0

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Question

Power loss minimisation using fmincon
I need to minimise my power losses using fmincon with constraints. the Values that i am using are: Vm=230; Rmk=0.0246; Rkn=0.0...

nästan 4 år ago | 3 answers | 1

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Question

Program that sums as many numbers as user wants
I need to write a program that displays the sum of user-provided numbers. The user should be able to provide as many numbers as ...

ungefär 4 år ago | 1 answer | 0

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Question

How do I indicate phase changes on my velocity versus time plot on MATLAB?
I have a graph that plots velocity versus time and I have to indicate where/which data point on the plot accelerates, stays cons...

ungefär 4 år ago | 1 answer | 0

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Question

Runge-Kutta 4th Order on a 2nd Order ODE
I am dealing with the following 2nd order ODE: With initial conditions of: , , . and should be 3.24 I have found the sys...

ungefär 4 år ago | 2 answers | 0

2

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Question

Change origin of a mesh
Hello, I would like to chane the origin of this mesh: to put the origin0 at the coordiante : -200 ,any ideas for it? Here...

ungefär 4 år ago | 1 answer | 0

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Question

How to plot 2D mesh with a circular area
Hello, I want to plot a 2D mesh as shown in this figure: Here is where i am so far in the code: rows=251; columns=257; [R...

ungefär 4 år ago | 0 answers | 0

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Question

How can I create a 3D array?
for i=1:n-1 Image2 = uigetfile('*p*'); ImageArray2 =imread(Image2); MDArray = cat(3,ImageArray,[ImageArray2])...

ungefär 4 år ago | 1 answer | 0

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Question

Creating a 2D mesh of a real image
Hello, I want to create a 4*4, 2 dimentional mesh of an image of a composite material (containing an inclusion). I have tried ...

ungefär 4 år ago | 0 answers | 0

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Answered
Get coordinates of points from an image
It works! I have also tried to reshape the matrix C. Thank you

ungefär 4 år ago | 0