# VBBV

### PEC

MATLAB enthusiast , Mechanical engineer (MeMe) :-)

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**Content Feed**

MATLAB for loop and nested if commands

v = [6, 3, -9, 10, 5, 0, -8, 11, -5]; for k = 1:length(v) if mod(v(k),2)== 0 & v(k) > 0 v(k) = v(k)/2; el...

13 hours ago | 0

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How to use fprintf function to display information properly?

clear; clc; close all; r=10:5:20 h=6:6:30; dvolume=pi.*r.^2.*h'; minvol= 10; %input('Enter the minimum acceptable volume in ...

1 day ago | 1

The distance traveled by a ball falling in the air is given by the equation x = x_{0} + v_{0}*t + 1/2 * a * t ^ 2

Here is another simple way to find the position t = 0:0.01:10; % consider a time vector for ball displacement (say 10s) x0 =...

3 days ago | 0

Why matlab is not some varriables within loops

Hi @okoth ochola, You need to sum the operation over entire array f1 inside the for loop r=0.1 R=10 T=10 t=[1:0.1:10]';...

3 days ago | 0

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How do I create a variable H which contains the product of 5 and the values of B in the 1st and 9th rows, and the 1st and 2nd column.

Do you mean like this ? B=rand(randi([10 20]),randi([5 30])); H = 5*kron(B([1,9]),B([1,2]).')

4 days ago | 1

Error when multiplying an evaluated function

N = 100; L = 1; node = linspace(0,L,N+1); nodes = linspace(0,L,1000*(N+1)); elem = zeros(N,2); for e = 1:N elem(e,1) =...

4 days ago | 0

How do I create a row vector P, that contains the sum of the values in column 2 and the sum of the values in column 5 of matrix B.

B = rand(randi([10,20]),randi([5,30])) P = sum(B(:,[2,5]))

5 days ago | 1

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I am trying to assign a pattern of alphabets to a sequence of alphabets that I have.

seq_file = fopen('insulinDNAseq.txt'); template5_3 = fscanf(seq_file,'%s'); seq_len = length(template5_3); template3_5 = [fli...

5 days ago | 0

How can I solve Inecuations

syms x real eqn = (3-3*x)/x <= 0 sol = solve(eqn,x)

5 days ago | 0

How to compare these two strings?

try using strcmp function FilteredCIV = CIV(strcmp(CIV.SYMBOL,UnderlyingSymbols.SYMBOL(1)),:); % try using strcmp

5 days ago | 0

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Manipulate elements in a matrix based on a mathematical condition using logical indexing

A = rand(26,500) % zeros() just used for illustration condition = ( A(26,:) - A(1,:) ) < 0.01; A(:,condition) = A(1); A

6 days ago | 0

Creating an empty figure

tf = isempty(names); if tf == 1 figure % to generate empty plot elseif opt <1 | opt > 3 figure disp("In...

6 days ago | 0

Array indices must be positive integers or logical values.

Matlab arrays are indexed using whole integers, when you give a fractional or decimal values as input it throws such errors cle...

9 days ago | 1

from txt to dat file

Select the desired range in Range field box. i.e. Only the categorical column. It seems you have selected a array of columns in ...

11 days ago | 0

How to make comparison plot in a struct

plot(egoStatesRefTrajectory(m).y(:,1),egoStatesRefTrajectory(m).y(:,2))

12 days ago | 0

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I am unable to get the deflection of beam correctly and the plot is incorrect.Even when i am using the right code. Also i tryed to distribute my beam into sections.

scale = 50; E= 1.999*10^11; % N/m2 nu = 0.3; I= 7.74.*10^-7; % m^4 H = 0.0762;% m R1 = 2224; % N R2 = 2224; % N P = 222...

12 days ago | 0

how to solve and plot complex equation

b = 3; c = 4; x=0:180; a=b*pi*sin(deg2rad(x))/c; y=(sin(a).^2)./a.^2; plot(x,y)

12 days ago | 1

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Trying to make a Hiragana guesser

rand=randi(5) switch string(rand) case '1' disp('something') case '2' disp('something') end

13 days ago | 0

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Call function Callback into myfunction

Use simply the UpdateTableButton inside the function MPV_Calc_Draw_Graph.m file. app.UpdateTableButton and rename the functio...

13 days ago | 0

search for the position of a number inside a cell (cell with existence of empty rows)

Use a | instead of &. OR in place of AND

14 days ago | 1

Latex Font in MATLAB

xlabel('$E_{\it V_{1}}$', 'Interpreter','latex')

14 days ago | 0

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Converting a cell array to excel file using write table - how to add headers and sheet name?

sheetNames = {'2000', '2001', '2002','2003', '2004', '2005','2006', '2007', '2008','2009', '2010', '2011',... '2012', '2013...

15 days ago | 1

stuck in a small issue related to implementation of an aircraft trim condition code with cost function: error is "TOO MANY INPUT ARGUMENTS"

Few syntax and typo errors that are persistent in your code need to checked. % TRIM.m clear; clc; close all; % x u gamma; ...

15 days ago | 0

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Question

Unable to comprehend "time" function output

d = caldays(8:10) + hours(1.2345) t = time(d) % this output Is this output returning the difference between time components ...

15 days ago | 1 answer | 0

### 1

answerWhy is my function not recognized?

myEquation(2) function myEquation (x) a = 0.4361836; b = 0.1201676; c = 0.937298; r = exp(-0.5*(x^2))/(2*pi) t =...

15 days ago | 0

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remove data from fig file after plotting

|If you want to do it using figure properties alone, this is one way h = openfig('eps_mu_mu_34.fig') % figure properties ax =...

16 days ago | 0

always process on first image of the image series where exist in a folder while using imwrite inside for loop

image = imread(sprintf('%d.gif',a)); Try using the above format. Is *a.gif* a multimage file from which you try to read individ...

17 days ago | 0

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Newmark-Beta in dynamic analysis for solving nonlinear stiffness matrix problem

clear all clc % Define parameters n = 3; % Number of degrees of freedom m = eye(n); % Mass matrix (identity matrix for simpl...

19 days ago | 0

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How to modify the code to compute data on multiple inputs?

theta = [15 30 45]; for i = 1:227 % size(vp,2) for k = 1:length(theta) data{i,k} = fwmod_vpvsrho(vp(:,i),vs(:,...

20 days ago | 0

| accepted