problems with plot3

Hey folks. I want to plot a function of two variables Resigma(d,omega). When i run matlab it gives me the error message:

    Matrix dimensions must agree.
Error in mattisbardeen (line 20)
Resigma2 =
pi./8.*exp(-1./tau).*(cos(-d.*o)+sin(-d.*o)).*(omega+o)./omega.*((1+2.*Delta./(omega+o)).*L-(4.*Delta./(omega+o)).*F).*heaviside(omega+o-2.*Delta);

My code is (line 20 is where Realsigma2 is defined):

if true
  clear
hbar = 6.582119e-01; % Planck constant (meV ps)
clf reset;
Delta = 1.0;
tau = 0.5;
o = 3./hbar;
omega0 = 0:1/100:2;
omega = 2:1/100:10;
d = 0:1/100:10;
k0 = 0;
k = (omega-2.*Delta)./(omega+2.*Delta);
l = (omega+o-2.*Delta)./(omega+o+2.*Delta);
[K,E] = ellipke(k);
[L,F] = ellipke(l);
Resigma1 = pi./8.*((1+2.*Delta./omega).*E-(4.*Delta./omega).*K).*heaviside(omega-2.*Delta);
Resigma2 = pi./8.*exp(-1./tau).*(cos(-d.*o)+sin(-d.*o)).*(omega+o)./omega.*((1+2.*Delta./(omega+o)).*L-(4.*Delta./(omega+o)).*F).*heaviside(omega+o-2.*Delta);
Resigma = Resigma1+Resigma2;
plot3(d,omega,Resigma,'b'); hold on
plot3(d,omega,k0,'b');

end

Plotting Resigma(d) and Resigma(omega) with plot for a fixed value of the other variable, respectively, both works. Any suggestions why I can't get the 3d plot? Thanks in advance!

[Star Strider]

The problem:

whos d omega

    Name       Size              Bytes  Class     Attributes

    d          1x1001             8008  double              
    omega      1x801              6408  double

You must decide how you want to solve that problem.

[Rebecca Müller]

what would be the possibilities..?

Answer 1

[Star Strider]

Try:

omega = linspace(2, 10, 200);
d = linspace(0, 10, 200);

Note that ‘k0’ is a scalar, and plot3 wants equal-length vectors.

[Rebecca Müller]

thanks!

[Star Strider]

As always, my pleasure!