MATLAB: Error using vertcat Dimensions of matrices being concatenated are not consistent

differential equationsmathematicsmatlab errorode45

I've looked at some other posts where people got this same error on this site but I can't figure out how to use the answers to fix my problem. I'm attaching my code – FluSeason.m being my script file and FluSeasonEQ.m being my model file – and if someone could look at it and tell me what's wrong, that would be phenomenal. This is the entire error message: This is the error: Error using vertcat Dimensions of matrices being concatenated are not consistent.
Error in FluSeasonEQ (line 51) dydt=[dsdt;didt;drdt];
Error in odearguments (line 87) f0 = feval(ode,t0,y0,args{:}); % ODE15I sets args{1} to yp0.
Error in ode45 (line 113) [neq, tspan, ntspan, next, t0, tfinal, tdir, y0, f0, odeArgs, odeFcn, …
Error in FluSeason (line 44) [t,y] = ode45(@FluSeasonEQ,[0,104],y0,[],param);

Best Answer

I've sorted out the answer to the problem. In the model file, FluSeasonEQ.m, the spline interpolation of T includes a portion where t is defined: t=0:.05:104 But Matlab already had t defined in the function command at the start of the file. This resulted in errors concatenating the matrices. By removing the problematic line of code, the rest works.
Related Question