# VBBV

### PEC

Programming in MATLAB applied to interdisciplinary engineering fields

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Matrix Multiplication with Trigonometric Functions

theta1 = pi*2/3; theta2 = 2; A = [-cos(theta1) 0 -sin(theta1) 0.033*cos(theta1); -sin(theta1) 0 cos(theta1) 0.033*sin(t...

2 hours ago | 0

User defined function in for loop

file=('list of my files') for i = 1:length(file) a=1; b=2; [csv,D] = read_function(i,file{i},a,b);...

16 hours ago | 0

bar3 color

A = rand(10,20); figure; hc = bar3(A.'); figure; h = bar3(A.'); for ii = 1:length(h) zdata = get(h(ii),'ZData'); ...

1 day ago | 0

Plotting 3d bar garphs using bar3

x1=rand(1,10); x2=rand(1,10); x3=rand(1,10); x = [x1; x2; x3]; bar3(x,'grouped') You can use bar3 function with additional ...

1 day ago | 0

Unable to perform assignment because the left and right sides have a different number of elements.

tt(:,i+1)=image(x+n(j,1),y+n(j,2)) Change this line to above

1 day ago | 1

Matlab Error after executing the code

clear all clc kc=[1 2 3 4 5 6 7 8 9 0]; k12=200; k34=300; new1=1:1:10; for l1=1:length(new1) K(:,:,:,:,l1)=[k12 -k...

2 days ago | 0

How to insert dash-line in a matlab figure?

x = 0:360; y = rand(361,1); plot(x,y); ax = gca; ax.YGrid = 'on'; ax.LineWidth = 1.5; set(ax,'GridLineStyle', '-.')

2 days ago | 0

how can i get 498 matrices???

n=500; h=1/(n+1); x=linspace(0,1,n+2); t=0:.001:1; for i=2:499 phi(i,:)=BSSpline((t-(i).*h)/h); % use a multidimensional ...

3 days ago | 0

Why plotting the first derivative of my function gets shrinked on its amplitud?

x = linspace(-2*pi,2*pi,100); y1 = sin(x); % original equation y2 = diff(y1,1); %1st derivative plot(y1); hold on; plot(y2);...

3 days ago | 0

sin function gives straight line when plotting

x = [0:0.1:50]; y1 = 0.25*x.*sin(x); y2 = 0.25*x; y3 = -0.25*x; plot(x,y1,x,y2,'--',x,y3,'--')

3 days ago | 0

log and Exponential Equations: logb^300=30, find b)

b = 10^(log10(10)/10) % using decimal log after rearranging the expression bb = exp(log(2.7182)/10) % using natural log after ...

3 days ago | 0

plot and surf 3D graph

for Kp = 1:1:3 for tau = 1:1:3 for theta = 1:1:3 for lambda = 1:1:3 %Tuning the con...

3 days ago | 0

I need to plot the following script. But it gives an error.

close all clear all %properties of rocks Vs_soil=170; Psoil=1.5; Hs=70; Vs_rock=1000; Prock=2.4; damp=0; %impedan...

4 days ago | 2

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When I run this breast cancer detection code I get "Size inputs must be scalar. " error. How can I solve it ?

hist_data = zeros(size(round(hist_count))); When you use hist_count as dimension for hist_data it takes size values from h...

4 days ago | 0

If part of While loop not executing any functions

while PF == isempty(PF) if all(Pact == isempty(Pact)) && and(Pre == isempty(Pre)) break else Papp = s...

4 days ago | 0

how to plot a continuous graph in a loop

for k=1:10; x=5; y(k)=2*x-5*k*k*k; plot(1:k,y(1:k),'*'); % use the loop indices to plot in a loop ...

4 days ago | 0

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when i am plotting this conditional for loop program no plot is showing only one dot is showing. Can anyone help me about how to display plot? i am using Matlab 2013..

% conditional x= -5:0.005:15; for k=1:length(x) if x(k)<0 y(k)=sqrt(x(k)^2+1); elseif x(k)<=10 y(k...

4 days ago | 0

loop function help please

x=-10:1:10; for i=1:length(x) if x(i)<0 F(i)=3*x(i)^2+5*x(i)-7; else F(i)=3*x(i)+4; end end ...

4 days ago | 0

Question in continuous time signals

%% DT = 0.01; t = [-2:DT:12]; %% Question 2.1 %Parts of Signal t1 = -2:DT:7; y1_1 = (exp(abs(-0.5*t1))).*(2*sin(10*p...

6 days ago | 0

How do plot rows of your matrix into a histogram?

A= [0 0.0032 0.0032 0.0032 1.0000 0.0010 0.0028 0.0016 2.0000 0.0012 0.0001 0.0013 3...

6 days ago | 0

Plotting an equation with summation and roots of bessel function

Please check constants in equations for which you want to find besselj roots and plot them t = 0:1:100; J0 = besselj(0,t); a...

7 days ago | 0

Make an double integral function

u_j = 10.4;% select a value u_m = 2.6; % give a value sigma_sq = 1.1;% assume a value syms x y y = 0:0.1:10; % gvien rang...

7 days ago | 0

solving an equation and adding results to a matrix

syms m; syms n; k=linspace(-3.5,+0.5); z=zeros(1,100); c=length(k); for s=1:1:100 z =solve((k(s)+1.5).^2+(m-0.75).^2==...

7 days ago | 0

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how to write delta function like this?

syms n h = @(n) dirac(n-3)-2*dirac(n-4); h = h(0:0.1:10); h(h==0) = 1; plot(h,'.','MarkerSize',4,'linewidth',2)

8 days ago | 0

Question

How to access *.mat files using Matlab drive and load them ?

D = fullfile(matlabdrive,'data.mat') K = load(D)

9 days ago | 1 answer | 0

### 1

answerNumeric integration with two variable

Vb=0.228; dz = 2e-11; Ltot = 20e-9; z=-Ltot/2:dz:Ltot/2; size(z) L = 10e-9; a=2e-9; alfa = 10e-9; omega...

9 days ago | 0

discrete-time real exponential signal

clc; clear; close all alpha = -.9; t = -10 : 0.10000 : 10; y = exp(alpha.^t); % exponent of alpha is vector t stem(t,real...

9 days ago | 0

if statement for piecewise function

syms t beta = 10; p = piecewise(0<t<10,0.3*beta,10<t<20,-0.3*beta,0) fplot(p,[0 20],'linewidth',2) axis([0 20 -5 5])

9 days ago | 0

Problem for doing Monte Carlo Integration

clc clear close all %% Initialize Input tic % Time Execution Start syms x a = 0; % Lower Limit b = pi; % Upper Limit c...

9 days ago | 0