MATLAB: How to produce capital omega

latexMATLAB

In mlx file the output of Omega is still small omega. Is there any syntax to obtain the desired?

syms Omega
Omega

I want to get Ω.

Best Answer

In R2020a, I get this

Related Solutions

MATLAB: How can i use a “while” loop to automatically increment omega

I imagine by ‘omega’, you actually intend:

w=(2*pi/5);

A while loop is best used if you want to increment it and then test to see if a specific value meets a specific criterion, and stop the loop when it does.

If you just want to increment it over a range without testing, use a for loop instead.

I experimented with vectorising your code by making ‘omega’ a vector and using element-wise operations where I could. It works for some calculations, but it makes the ‘xx’ calculation impossible. A loop is likely the only way to go.

I could not run this because ‘C’ and ‘a’ are not defined. Correct that, then see if this works for you:

theta=120;
sign=(cosd (theta)/abs (cosd (theta)));
u=.8;
wv = linspace(0, (2*pi/5), 10);                          % Vector Of Values For ‘w’
R=1;
c=4.05/12;
H=18/12;
y=H-(R*sind(theta/2));
Md=50/32.2;
Id=(.5*Md*R^2);
Mp=75/32.2;
Mb=30/32.2;
alpha=0;
u=.8;
L=(6/12*R);
g=32.2;
for k1 = 1:length(wv)
    w = wv(k1);
    ax = (-R*w.^2)*cosd(theta);                             % Modified For Element-Wise Operations


    ab = (-R*w.^2*cosd(theta))-(R*w.^2*sind(theta));        % Modified For Element-Wise Operations
    ay = (-R*w.^2)*sind(theta);                             % Modified For Element-Wise Operations
      AA=[1 0 1 0 0 0 0 0 0; 0 1 0 1 0 0 0 0 0; 0 0 -R*sind(theta) R*cosd(theta) 0 0 0 0 0; 0 0 0 0 1 0 1 0 0; 0 0 0 0 0 1 0 1 0; 0 0 -1 0 -1 0 0 0 0; 0 0 -c 3*R -c -3*R 0 0 0; 0 0 0 0 0 0 0 0 0; 0 0 0 0 0 0 0 0 0];
      CC=[0 Md*g Id*alpha 0 Md*g Id*alpha Mp*ax Mp*ay+Mp*g Mb*g];
      xx=CC*AA;
      if (0<theta) & (theta<180), x{k1} = C*a;
      else xx{k1} = CC*AA
      end
  end

I left ‘x’ and ‘xx’ as cell arrays because I don’t know how large they are.

MATLAB: Complex plots bug

"Am I doing something wrong or is this a bug in Matlab plotting?"

There is no bug in the plotting.

Exactly as documented, when z is complex, plot will plot the imaginary part against the real part.

What you have overlooked is that MATLAB silently removes the "complex" property from an operation's output array when the imaginary part of every value in that array is zero. And that is what happens with some of your values, the ones where you multiply i by zero... which not surprisingly have zero imaginary part, therefore z is not a complex array, and so the input to plot is not a complex array, so plot applies other rules (plotting the input value against the indices of that input array, which for a scalar are always 1).

You can check this yourself by only plotting the non-complex values inside your loop:

if isreal(z)
    plot(z,'b.')
end

I don't know if there is a neat way to force an array to be complex. To make z complex add this:

if isreal(z)
    z = complex(z);
end

or this

z = complex(real(z),imag(z));

Giving:

Best Answer

Related Solutions

MATLAB: How can i use a “while” loop to automatically increment omega

MATLAB: Complex plots bug

Related Question