VBBV
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Programming in MATLAB applied to interdisciplinary engineering fields
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Content Feed
Bar plot with two x axis and Display Groups of Bars
x = 2010:2019; y = rand(1,10); % 1 y6= rand(1,10); % 2 yyaxis left %ax = gca; %ax.YAxis.Exponent = 2; b = bar(x,[y;y6]);...
ungefär 14 timmar ago | 0
Not enough input argument in ode45
[t,x] = ode45(@mastersystem,[0 10],[0 0 0 0 0 0]); % use a function handle to pass function as argument plot(t,x) function d...
ungefär 15 timmar ago | 0
What's wrong with my distribution function?
X = -100 : 1 : 100; Y = -100 : 1 : 100; k = 4; G = gamma(k/2) [ XX, YY ] = meshgrid( X, Y ); A = ( XX ).^2 + ( YY ).^2; A ...
ungefär 23 timmar ago | 0
Plot measured Filter data
T = readtable('Plot.xls') frequency = T{(22:109),1}; % change this to ffequency gain = T{(22:109),2}; phase = T{(22:109),...
en dag ago | 0
| accepted
matlab indexing issue with range -pi:pi
amin=0.2; theta = -pi:pi/2:pi; gamma=0:0.5:3; for T=1:length(theta) for G = 1:length(gamma) phi=amin-(-pi/2); ...
2 dagar ago | 0
| accepted
phase shift using xcorr
t = 1 :0.1: 20; phaseshift= pi/2; s1 = sin(2*t); s2 = sin(2*t+ phaseshift); figure(1); clf; plot (t...
5 dagar ago | 0
I am trying to find the integral gain (ki) of the following transfer function.
syms ki ki = 10 % e.g numeric values , not symbolic sys = tf([30.672 175.694*ki],[1 38.672 175.694*ki]); S = stepinfo(sys); ...
5 dagar ago | 0
Hold on with subplot in a loop
A={[40;50;60] [70;80;90] [20;30;50]}; B={[45;55;65] [75;85;95] [25;35;55]}; T=[1;2;3]; figure(1) % use this outside of l...
7 dagar ago | 0
Question about the inability to display 16k octave bands(1/3 oct band)？
if fs==22050 fc=1000*2.^((-6:1:2)); fctxt={'16','32','63','125','250','500','1k','2k','4k'}; else fc=1000*...
8 dagar ago | 1
| accepted
Error using FDE12
s = 1:4; % define s vector passed as argument to function line below e.g. values sdot = @(t,s)[A-(e*s(1)*s(2))-(a*s(1)*s(3))+...
9 dagar ago | 0
An error in my code
clear syms x % syms F= atan(x); t5= taylor(F,x,'order',5); t7= taylor(F,x,'order',7); fplot(x^3/3+x,[-pi pi],'b') hold o...
10 dagar ago | 2
I do some revisions to my equation but I still got no answer. It says that there is no enough input argument. Can someone please help me?
x0=[150;150;150;150;150;150;150]; % x = 1:7; % give input vector to fucntion sol=fsolve(@rle,x0) % call the function using fu...
11 dagar ago | 0
| accepted
Pcolor Plot returning error Color data input must be a matrix.
h = pcolor(X1, Y1, z); % use X1, Y1 instead of x1 , y1, z must be 21x26 matrix
12 dagar ago | 0
how to plot solution of ODE eqution with out using fplot ?
% this code is used to show how to use ode in matlab, via a simple problem % for serios RC circuit with DC supply clc;clear a...
14 dagar ago | 1
| accepted
How can I store the whole diagonal and not only the first element (For loop)
% Part 3.1: Diagonal %A rng('default') r2 = randi(100,3,3); % Creating a 3x3 matrix, with random values from 1 to 100 %B ...
14 dagar ago | 0
| accepted
Why is ySol(t) = Dsolve(ode,cond) wrong? What should it be instead?
y=eval(ySol(t))% Use ySol(t) to evaluate
14 dagar ago | 0
Having trouble writing a multiple gravitational physics simulation code, as every planet effects one another.
a(q,:)=(sum(F(q:(q+o-1),:)))./mass(q); %Calculate acceleration of each planet v(q,:)=v(q,:)+a(q,:)*ts; %calula...
14 dagar ago | 0
Trouble graphing this non-linear function
x = 1:100; y = ((factorial(x)).^(1./x))./x; % use element wise division fplot(y,[0 100]) % no space between function and par...
14 dagar ago | 0
I am trying to a series generated from complex function but it gives to me an error.
clear; clc; syms k Delta=0; chi=0; theta=0; alpha=5; phi=0; bn=exp(-0.5*alpha^2)*(alpha^k)/sqrt(gamma(k+1)); bn1=exp(-0...
21 dagar ago | 0
using for loops to calculate compound interest with yearly contributions
N=17804; P=1000; C=1000; r=(10/100); I = 1; while P<=N y(I)=(P*(1+r)); % use an index for desired amount, P=y(I)...
25 dagar ago | 0
Semilogx function giving a linear scale
S = [1e-2 1e-1 1 10 100 1000 1e4]; % Remdesivir concentration, in uM Km = 0.5; % Equilibrium constant, in uM Vmax = 0.82; % ma...
26 dagar ago | 0
| accepted
Need help with syntax and how to use sigma in matlab
clear close all Z1=500 Z2=50 Z3=500 u=1 tau1=(2*Z2)/(Z1+Z2) tau2=(2*Z1)/(Z1+Z2) tau3=(2*Z3)/(Z3+Z2) p1=(Z2-Z1)/(Z2+Z1...
27 dagar ago | 1
| accepted
Unable to perform assignment because the size of the left side is 1-by-2 and the size of the right side is 2-by-2. (Line 32)
pp=@(t,x)[.23*x(1)-.0133*x(1)*x(2); -.4*x(2)+.0004*x(1)*x(2)] [t,y]=rk4sys(pp,[0,65],[550,20],0.3) figure(1) plot(t,y(:,1),...
27 dagar ago | 1
How to skip a data set in the legend of a plot?
clear; clc; clf; close all; x1 = [0.015 0.020 0.050 0.100 0.200 0.300 0.400 0.500]; y1 = [5.518E-11 7.215E-11 1.832E-10 ...
27 dagar ago | 1
| accepted
how to put for loop value into a vector
k = 0.168:0.168:1.68 ; for x=1:length(k) if k(x)>=0.03 && k(x)<=0.06 h(x)=1.437*k(x)^(-0.279); elseif k(x)>=0.07 && k(x)<...
28 dagar ago | 0
fplot invalid parameter error
m=100; k1=1500; k2=2500; k3=700; wb=4.4; Y=0.05; w1=sqrt(k1/m); w2=sqrt(k2/m); w3=sqrt(k3/m); r1=wb/w1; r2=wb/w2; r...
28 dagar ago | 1
Error with the command Geoplot
lat=cell2mat(A.Latitud);% if Latitud is the header name of column. Please check this. There Was extra parenthesis in my pr...
28 dagar ago | 0
Multiplying f(x) with f(-x)
cof = [1 15 7 2] syms x F(x) F = (cof(1)*x.^3+cof(2)*x.^2+cof(3)*x+cof(4)) FF = subs(F,x,-x) Fx = F.*FF % resulting produc...
29 dagar ago | 0
| accepted
Discontinuous display in Simulink Scope
Select the plot type as Auto in scope block. This plots the graph as continuous signals instead of discrete ones which you have...
30 dagar ago | 0
Why is my if counter not working
s= 0 x = linspace(-1,1, 50) n = linspace(1,10,50) L = 2 total = 0 s= zeros(size(n)) for i = 1:length(n) s(i) = (8/(p...
30 dagar ago | 0
