Risposto
How to plot a large data set with markers to differentiate two overlapping lines?
How about plotting every n points. For example plot(t(1:1000:end),n_d(1:1000:end),'o') hold on plot(t(500:1000:end),n_r(500:...

oltre 5 anni fa | 0

| accettato

Risposto
there is also a mistake here i can't recognize it , please help
You need N = [-V3*cos(th3(ii))-40*W2(ii).^2*cos(th2(ii))+C(ii)*W3(ii).^2*cos(th3(ii))+V3*W3(ii)*sin(th3(ii)); V3*sin(t...

oltre 5 anni fa | 0

Risposto
How to vectorize this function?
You need a ./ (i.e. dot /) x3=@(phi) (R-((3-2.*sin(phi))./(1-0.5.*sin(phi)).*R)/4).*cos(phi) ...

oltre 5 anni fa | 0

Risposto
Plotting graph with Alpha and spectral radius
It works if you set i = 0.1:0.1:10. With i = 0; the inverse of S is full of Inf's.

oltre 5 anni fa | 0

| accettato

Risposto
Conditional with time in ode45
Include upsilon within the odefcn mu = 6.25e10^-3; eta = 6.25e10^-3; beta = 0.03813350836; gamma = 0.01165323939; delta = 1...

oltre 5 anni fa | 0

| accettato

Risposto
what's wrong with this code. why it show error can anyone tell?
You probably want something like this (don't enclose it with the statement 'function matlab' - that won't work). Remember to in...

oltre 5 anni fa | 0

Risposto
Plot with 2 parameters
Do you mean something like this: theta = -90:90; ri = 0.5; ro = 1.5; x = [ri*cosd(theta) ro*cosd(-theta) 0]; y = [ri*sind(th...

oltre 5 anni fa | 1

Risposto
Please, how can I solve runKut4 in line 6?
Try t = 0.0; tStop = 6.0; y = [1.5 0]; h = 0.1; [T,Y] = ode45(@dEqs,[0 tStop],y); plot(T,Y(:,1),'ko-') xlabel('time (s)')...

oltre 5 anni fa | 0

| accettato

Risposto
ode45 function matrix dimensions problem
You need to loop through the Y_H values. See below global mu_H Ks X_BH teta Ss_in mu_Hmax=0.15; %days^-1 T=22.6; %centigrad...

oltre 5 anni fa | 0

Risposto
I am getting this error "Assignment has more non-singleton rhs dimensions than non-singleton subscripts". Please help. Mw, Cw and Kw are 243X243 matrices.
It gets past your indicated Error line for me, but fails because you haven't defined Mw, Cw or Kw.

oltre 5 anni fa | 0

Risposto
Error: Unable to perform assignment because the left and right sides have a different number of elements.
There are a lot of missing indices and definitions. In the following the indices are repaired; however, you will need to define ...

oltre 5 anni fa | 0

| accettato

Risposto
Grading system in excel sheet based on marks
Shouldn't you have for i = 1:1:N if R(i)>=80 table.StudentGrade{i} = 'A'; elseif R(i)>=70 table.StudentGrade{i} = 'B...

oltre 5 anni fa | 0

Risposto
2D cylindrical boundriondition problem
It looks like vr = 0.8:hr:0.2; is the cause of the problem. This leads to vr being empty!

oltre 5 anni fa | 0

Risposto
I am trying to modulate the carrier with Gaussian pulse using frequency modulation. I tried to write this code. Can any one help is it correct, if not please can you help me in this regard. Thanks
Don't put a space between dot and ^ or dot and *. Also use figure, not figures. Try the folowing f = 12e12; % carrie...

oltre 5 anni fa | 0

| accettato

Risposto
I tried to solve the code in R2015a but constantly getting errors:The following error occurred converting from sym to double.DOUBLE cannot convert the input expression into a double array. If the input expression contains a symbolic variable, use VPA
How about the following: %material property at the left end steel E0=2.1*10^11; G0=0.8*10^11; rho0=7.85*10^3; %material pro...

oltre 5 anni fa | 0

Risposto
problem with Euler's explicit methode
Because you have initial values of zero for L0=0;M0=0;Z0=0;N0=0; and they multiply the terms on the right-hand side of your f...

oltre 5 anni fa | 0

| accettato

Risposto
Matrix dimensions must agree.
This works % n all alpha beta gamma min max d=[1 550 8.1000 0.00028 0 680 2 309 8.1000 0.00056 0 360 3 307 8.1000 0.00...

oltre 5 anni fa | 0

| accettato

Risposto
When I attempt to run this code, it doesnt stop running. It will only stop when I pause it. Would appreciate any help as to how to fix this?
Your pressure goes negative just after a catalyst weight of 5 kg. Should it do this? Perhaps your equations should be double-c...

oltre 5 anni fa | 0

Risposto
writing and plotting function with multiple conditions
One possibility: f = @(x) 9/5*x*(0<=x & x<1/2)+9/5*(1-x)*(1/2<=x & x<=1); e.g. f(0.1) ans = 0.1800 >> f(0.75) ...

oltre 5 anni fa | 0

| accettato

Risposto
Why is my plot figure blank?
You only calculate a single value of B. Presumably the x and y values should vary with nu somehow, but you don't specify how!

oltre 5 anni fa | 0

Risposto
design of journal bearing
Here's an example for l/d = 1/4. Note that because the S scale is logarithmic, it's best to interpolate logarithmically: S...

oltre 5 anni fa | 0

Risposto
Unable to perform assignment because the indices on the left side are not compatible with the size of the right side. how do I solve the problem?
Replace x_d(i)=[2*sin(2*t(i));4*cos(3*t(i))]; by x_d(:,i)=[2*sin(2*t(i));4*cos(3*t(i))]; Similarly for the others.

oltre 5 anni fa | 0

| accettato

Risposto
Multiplying vectors resulting in unfinished answer
Use a./b not a/b for element by element division.

oltre 5 anni fa | 0

Risposto
Finding 0 in data for n X 2 array
Here's one way: ix = (M(:,1)+M(:,2))==0; M(ix,:) = [];

oltre 5 anni fa | 1

Risposto
solve multipe eq in a loop
Your equations are linear in p (p2 to p9, that is, since p1 is constant for all times), so the following is a simple way to solv...

oltre 5 anni fa | 0

Risposto
Evaluating a 2nd order ODE using the Runge-Kutta method
More like this: a = 0; b = 1; %n = input('Enter the number of intervals:'); n = 100; h = (b-a)/n; y = [2; -2]; t = 0:h:...

oltre 5 anni fa | 0

| accettato

Risposto
How to solve this equation with matlab
Strange way of entering data! However, one way to find the friction factor is a simple fixed point iteration method, such as e...

oltre 5 anni fa | 0

Risposto
please help me with this
Simply insert hold xvals = [0 7.2 7.2]; yvals = [0.36 0.36]; plot(xvals,yvals,'--') after your plot command (though the pea...

oltre 5 anni fa | 0

Risposto
Equation of 3D motion with V, An, R
A little more like this perhaps, since you are given explicit expressions for velocities and accelerations (though note that ax ...

oltre 5 anni fa | 0

Risposto
Need Help Solving a system of 2nd and 1st Order ODEs
I think you should be passing only 5, not 6, parameters to your mysys function, which is better written as function dy = mysys(...

oltre 5 anni fa | 2

| accettato

Carica altro