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Help with splitting a string into a character array.
You could use s = 'Potato'; t = num2cell(s) t = 1×6 cell array {'P'} {'o'} {'t'} {'a'} {'t'} ...

7 years 前 | 2

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Code returns, "Error using quiver3 (line 44) V and W must be the same size." How to fix this? The variables are the same size(1x25 double).
Aamna, based on your information I am not clear exactly what you want to do. However, the input arguments for coordinates and ve...

7 years 前 | 0

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From Scientific Calculator [Solve] to matlab
Alex, use something like fun = @(X) cos(X)^2*cos(3*X)^2 - 0.5; options = optimoptions('fsolve','Display','none','PlotFcn',...

7 years 前 | 0

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How can I make the mask more beautiful?
Lu, you can create your own <https://blogs.mathworks.com/simulink/2008/07/27/how-to-make-your-own-simulink-block/ mask icon>. Do...

7 years 前 | 0

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How to specify which output will be recorded from a for loop?
Louisa, how about P2(j,i) = 1 / (1 + exp(-B*(V2-V1))); Careful with var names, though. |i,j| are also used as the imagin...

7 years 前 | 0

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Using ODE45 to solve 2 dependent ODE: dX/dt (mass transfer) and dT/dt (heat transfer) of a particle during fluidized bed drying process.
jean, check out <https://www.mathworks.com/matlabcentral/answers/142957-solving-two-systems-of-des-using-the-ode45-function#answ...

7 years 前 | 0

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Runga Kutta numerical integration
numnum, check out <https://www.mathworks.com/matlabcentral/answers/360751-solving-lorenz-attractor-equations-using-runge-kutta-r...

7 years 前 | 0

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how to solve 3 equations in 1 st order using rk4 method
Mallikarjun, check out <https://www.mathworks.com/matlabcentral/answers/360751-solving-lorenz-attractor-equations-using-runge-ku...

7 years 前 | 0

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Creating a rectangular pulse
captain, how about plot(x,f(x-0.5,a1,b1),'b--');

7 years 前 | 1

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I have several columns of data of different length, how can I combine them all into one continuous column?
Tyson, use x = [a; b; c]

7 years 前 | 1

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I get different results using the step response function only changing the order of the products of some parameters
Hi Mattin, welcome to the world of numerical analysis. While wn = x*R/L; WN = R/L*x; are the same expressions symbo...

7 years 前 | 1

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replace values by the previous value
Not quite sure if I understand what you are trying to do, but how about data = 10*rand(5) old = data(data(:,1)<=6,1) ...

7 years 前 | 0

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Solving Lorenz attractor equations using Runge kutta (RK4) method
The only bug that I can see at first glance is here y(i+1) = y(i) + h*(1/6)*(l1+2*l2+2*l3+l4); % replace ki by li You als...

7 years 前 | 2

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Is it possible to run 1 license on 2 or more computer?
Benjamin, according to the license agreement (R2017b): 2.3. Student [license use] (i) Student Licenses may be licensed by ...

7 years 前 | 0

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SIMULINK | Making a Lego Segway balance on its own two wheels using a gyroscope | PI-controller, help!
Hello Steffen-Andre, there are several entries in File Exchange that should help you get started, see <https://www.mathworks....

7 years 前 | 0

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How can I compute the leap years?
Aaron, you could do something like function leapyr = leapyears(startYear, endYear) %UNTITLED8 Summary of this function g...

7 years 前 | 0

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Difference between values and indices?
E.g. A = [1 2; 3 4] Values of/in |A| are |1,2,3,4|. To access the |2| you would use val = A(1,2) |(1,2)| are the ...

7 years 前 | 1

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Problems Indexing an Array
Without seeing the entire code, the only potential issue that I can see is that |t| must be integers starting at |t = 1|.

7 years 前 | 0

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I have a latitude vector and I need to rotate it throughout a time t.
Ainoa, how about dt = 60*60; % dt = 1 hr t = 0:dt:24*60*60; % time vector spanning one full day omega =...

7 years 前 | 0

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Looking for good example of where numerical integration beats symbolic integration
voxynn, how about a RLC circuit? You could start with the linear DE, show that the DE can be solved symbolically and numerica...

7 years 前 | 1

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How do I combine two index vectors to form a 2D index matrix?
Would this do the trick? Adx = Amat(Amat(:)>THR(:))

8 years 前 | 0

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vectorization of anonymous function?
Jan, is the resulting |u(x,y,z)| also a 1-by-4? How about: u = str2func(vectorize('@(x,y,z)sin(x*y*z^2)')); x = [1 2 3 ...

8 years 前 | 1

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Trouble with ODE45, (not enough data of a planet's orbit)
Fabio, you control the number of data points that are returned in [T1,Y1] = ode45('fUranus',tspan,[x00;xp0],options); by...

8 years 前 | 1

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How can we model this equation in simulink dx/dy + x + y = 1 where x is the input and y is the output.
Re-write as dx/dy = 1 - x - y % y is your independent variable, sort of "t" therefore dy/dx = 1/(1 - x - y) Then,...

8 years 前 | 1

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Changing a graph axis numbers
Burak, use the |axis| command. E.g. t = 0:0.01:2; y = exp(-t).*(sin(20*t).^3); subplot(2,2,1) plot(t,y) axis([0.5 1...

8 years 前 | 0

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how to write the equation of this graph
t = 0:0.01:2; y = exp(-t).*(sin(20*t).^3); plot(t,y)

8 years 前 | 2

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How to fix the superscript in the ticklabels of my boxplot?
Lea, this might help. Add set(gca,'TickLabelInterpreter', 'tex'); before setting the |xticklabel|.

8 years 前 | 7

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Subscripted assignement dimension mismatch
How about t = 1:0.1:5; y = t.*(t>=0&t<1) + (-t+2).*(t>=1&t<2) + 0*(t<0&t>=2); plot(t,y)

8 years 前 | 1

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How the Self-Paced Training course in matlab academy will be avaiable?
Mattia, you should be able to log in at <https://matlabacademy.mathworks.com/> with your MathWorks account credentials.

8 years 前 | 0

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updating handles in gui/guide for webcam
Christian, I solved a similar problem by removing the associated field of the |handles| object. So essentially (and following...

8 years 前 | 0