Matrices question (2)

Hi there,

I have a code which looks like this:

MATLAB code    

vN=linspace(Phimin, Phimax, N);

for iN=1:length(vN)

      Phi=vN(iN);

G(iN)=Phi + BOC;

C2(iN)=Rcon ./ ((Ccon .* cos(G(iN))) + (Scon .* sin(G(iN))));

C1(iN)=Rmax^2 + (C2(iN) .* cos(G(iN) + Thetamax));

A(iN)= (sqrt(abs(C1(iN)+C2(iN))) + sqrt(abs(C1(iN)-C2(iN))))./2;

B(iN)=C2(iN) ./ (2.*A(iN));

Fmax=0;

vP=linspace(Thetamin, Thetamax, P);

for iP= 1:length(vP)

      Theta=vP(iP);

      R(iP)= sqrt(C1(iN) - (C2(iN) .* cos(G(iN) + Theta)));

F(iN,iP)= abs(((R(iP).*(M*g*L)) .*cos(Theta)) /((A(iN).*B(iN)) .* sin(G(iN)+Theta)));

end

end

It allows me to determine variable F depending on value for variables phi and Theta, which are both matrices containing N and P terms respectively.

I would now like to determine what the maximum values of F are for a certain value of Phi-for example, if Phi=..., Theta=matrix of P terms, F=matrix of P terms, of which the maximum value is ...

I'd also like to store these values in a separate matrix, such as Fmax. With my code above, does anybodu have any advice as to go about doing this?

[Jan]

Please use standard code formatting. Follow the "Markup help" link to learn more about formatting.

[Nathan Edge]

Hi,

Is that any better? Sorry about the confusion

[Jan]

This a little bit better, but not proper. Simply insert an empty line before the code block and two spaces before the code lines.

Answer 1

[Andrei Bobrov]

Phi = vN;
Theta = vP;
[vmx1,idx1] = max(F);
Fmaxphi = [vmx1;Phi(idx1);Theta];
[vmx2,idx2] = max(F,[],2);
Fmaxtheta = [vmx2,Phi,Theta(idx2)]';