question about matlab farfiled sphere 3D image(really need help....)

SPHERE3D Error: Rho must be scalar, positive and real. Xout = []

Yout = []

Zout = []

Cmap = [] >> size(Rho) ans = 2701 1

what does this erro mean?

what is the meaning of this code?

[p,q] = size(Rho);
if (((p ~= 1)|(q ~= 1))|~isreal(Rho))|(ischar(Rho)|Rho < 0)

here is what written in my matlab code:

[p,q] = size(Rho);
if (((p ~= 1)|(q ~= 1))|~isreal(Rho))|(ischar(Rho)|Rho < 0)
 disp('SPHERE3D Error: Rho must be scalar, positive and real.');
Xout = []; Yout = []; Zout = []; Cmap = [];
 return
end

I defined the Parameters below:

X = sind(theta).*cosd(phi);
Y = sind(theta).*sind(phi);
Z = cosd(theta);

meshscale=1;
plotspec = 'surf';
interpspec = 'nearest';
Zscale = 1;
Xin=Rho.*X;
Yin=Rho.*Y;
Zin= Rho.*Z;

The attachment contains the whole function code SPHERE 3D.m

thanks a lot!